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| MCP9800/1/2/3 2-Wire High-Accuracy Temperature Sensor Features * Temperature-to-Digital Converter * Accuracy with 12-bit Resolution: - 0.5C (typ.) at +25C - 1C (max.) from -10C to +85C - 2C (max.) from -10C to +125C - 3C (max.) from -55C to +125C * User-selectable Resolution: 9 - 12 bit * Operating Voltage Range: 2.7V to 5.5V * 2-wire Interface: I2CTM/SMBus Compatible * Operating Current: 200 A (typ.) * Shutdown Current: 1 A (max.) * Power-saving One-shot Temperature Measurement * Available Packages: SOT-23-5, MSOP-8, SOIC-8 Description Microchip Technology Inc.'s MCP9800/1/2/3 family of digital temperature sensors converts temperatures between -55C and +125C to a digital word. They provide an accuracy of 1C (max.) from -10C to +85C. The MCP9800/1/2/3 family comes with user-programmable registers that provide flexibility for temperature sensing applications. The register settings allow userselectable 9-bit to 12-bit temperature measurement resolution, configuration of the power-saving Shutdown and One-shot (single conversion on command while in the Shutdown) modes and the specification of both temperature alert output and hysteresis limits. When the temperature changes beyond the specified limits, the MCP9800/1/2/3 outputs an alert signal. The user has the option of setting the alert output signal polarity as an active-low or active-high comparator output for thermostat operation, or as temperature event interrupt output for microprocessor-based systems. This sensor has an industry standard 2-wire, I2CTM/ SMBus compatible serial interface, allowing up to eight devices to be controlled in a single serial bus. These features make the MCP9800/1/2/3 ideal for sophisticated multi-zone temperature-monitoring applications. Typical Applications * * * * * * * Personal Computers and Servers Hard Disk Drives and Other PC Peripherals Entertainment Systems Office Equipment Data Communication Equipment Mobile Phones General-purpose Temperature Monitoring Package Types MCP9800 MCP9802 MCP9801 MCP9803 SOIC, MSOP 5 SDA 4 SCLK SDA 1 SCLK 2 ALERT 3 GND 4 8 VDD 7 A0 6 A1 5 A2 Typical Application VDD MCP9800/02 VDD 1 GND 2 ALERT 3 5 4 PICmicro(R) Microcontroller PIC16F737 I2CTM Port SOT-23-5 VDD 1 GND 2 ALERT 3 R SDA SCLK RPULL-UP I/O Port MCP9800/02A0: A2, A1, A0 are internally set to (0, 0, 0) MCP9800/02A5: A2, A1, A0 are internally set to (1, 0, 1) MCP9802/03: Serial Bus time-out 35 ms (typ.) 2004 Microchip Technology Inc. DS21909B-page 1 MCP9800/1/2/3 1.0 ELECTRICAL CHARACTERISTICS PIN FUNCTION TABLE NAME SDA SCLK ALERT A2 A1 A0 VDD GND FUNCTION Bidirectional Serial Data (open-drain output) Serial Clock Input Temperature Alert Output (open-drain) Address Select Pin (bit 2) Address Select Pin (bit 1) Address Select Pin (bit 0) Power Supply Input Ground Absolute Maximum Ratings VDD ....................................................................... 6.0V Voltage at all Input/Output pins .... GND - 0.3V to 5.5V Storage temperature ..........................-65C to +150C Ambient temp. with power applied .....-55C to +125C Junction Temperature (TJ).................................. 150C ESD protection on all pins (HBM:MM)....... (4 kV:400V) Latch-Up Current at each pin ........................ 200 mA Notice: Stresses above those listed under "Maximum ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, and TA = -55C to +125C. Parameters Power Supply Operating Voltage Range Operating Current Shutdown Current Power On Reset Threshold (POR) Temperature Sensor Accuracy Accuracy with 12-bit Resolution: TA = +25C -10C < TA +85C -10C < TA +125C -55C < TA +125C Internal ADC Conversion Time: 9-bit Resolution 10-bit Resolution 11-bit Resolution 12-bit Resolution Alert Output (Open-drain) High-level Current Low-level Voltage Thermal Response Response Time tRES -- 1.4 -- s Time to 63% (88C) 27C (Air) to 125C (oil bath) IOH VOL -- -- -- -- 1 0.4 A V VOH = 5V IOL= 3 mA tCONV tCONV tCONV tCONV -- -- -- -- 30 60 120 240 75 150 300 600 ms ms ms ms 33 samples/sec (typ.) 17 samples/sec (typ.) 8 samples/sec (typ.) 4 samples/sec (typ.) TACY TACY TACY TACY -- -1.0 -2.0 -3.0 0.5 -- -- -- -- +1.0 +2.0 +3.0 C C C C VDD = 3.3V VDD = 3.3V VDD = 3.3V VDD = 3.3V VDD IDD ISHDN VPOR 2.7 -- -- -- -- 200 0.1 1.7 5.5 400 1 -- V A A V Continuous Operation Shutdown Mode VDD falling edge Sym Min Typ Max Unit Conditions DS21909B-page 2 2004 Microchip Technology Inc. MCP9800/1/2/3 DIGITAL INPUT/OUTPUT PIN CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground and TA = -55C to +125C. Parameters Input High-level Voltage Low-level Voltage Input Current Output (SDA) Low-level Voltage High-level Current Low-level Current Capacitance SDA and SCLK Inputs Hysteresis VHYST 0.05 VDD -- -- V VOL IOH IOL CIN -- -- 6 -- -- -- -- 10 0.4 1 -- -- V A mA pF IOL= 3 mA VOH = 5V VOL = 0.6V VIH VIL IIN 0.7 VDD -- -1 -- -- -- -- 0.3 VDD +1 V V A Sym Min Typ Max Units Conditions Serial Input/Output (SCLK, SDA, A0, A1, A2) Graphical Symbol Description INPUT Voltage VDD Voltage VDD VIH VIL time Current Current IOL IIN time IOH time VOL time OUTPUT TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, VDD = +2.7V to +5.5V, GND = Ground. Parameters Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 5L-SOT23 Thermal Resistance, 8L-SOIC Thermal Resistance, 8L-MSOP Note 1: JA JA JA -- -- -- 256 163 206 -- -- -- C/W C/W C/W TA TA TA -55 -55 -65 -- -- -- +125 +125 +150 C C C (Note 1) Sym Min Typ Max Units Conditions Operation in this range must not cause TJ to exceed Maximum Junction Temperature (+150C). 2004 Microchip Technology Inc. DS21909B-page 3 MCP9800/1/2/3 SERIAL INTERFACE TIMING SPECIFICATIONS Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, -55C < TA < +125C, CL = 80 pF, and all limits measured to 50% point. Parameters 2-Wire I2 Sym Min Typ Max Units Conditions I2C MCP9800/01 SMBus MCP9802/03 C/SMBus Compatible Interface fSC fSC tSC tLOW tHIGH tR tF tSU-DATA tH-DATA tSU-START tH-START tSU-STOP tIDLE tOUT 0 10 2.5 1.3 0.6 20 20 0.1 0 0.6 0.6 0.6 1.3 25 -- -- -- -- -- -- -- -- -- -- -- -- -- 35 400 400 -- -- -- 300 300 -- 0.9 -- -- -- -- 50 kHz kHz s s s ns ns s s s s s s ms MCP9802/03 only 10% to 90% of VDD (SCLK, SDA) 90% to 10% of VDD (SCLK, SDA) Serial Port Frequency Clock Period Low Clock High Clock Rise Time Fall Time Data Setup Before SCLK High Data Hold After SCLK Low Start Condition Setup Time Start Condition Hold Time Stop Condition Setup Time Bus Idle Time Out Timing Diagram START Condition SCLK tSU-START tH-START SDA tOUT tHIGH SCLK tLOW Data Transmission SDA tR,tF tSU-DATA STOP Condition tH-DATA tSC SCLK SDA tSU-STOP tIDLE DS21909B-page 4 2004 Microchip Technology Inc. MCP9800/1/2/3 2.0 TYPICAL PERFORMANCE CURVES Note: Unless otherwise noted: VDD = 2.7V to 5.5V. 3.0 Temperature Accuracy (C) 2.0 1.0 0.0 -1.0 -2.0 Spec. Limits 12-Bit Resolution 160 Samples VDD= 3.3V -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 -55 -35 -15 5 25 45 TA (C) 65 85 105 125 Temperature Accuracy (C) FIGURE 2-1: Average Temperature Accuracy vs. Ambient Temperature, VDD = 3.3V. 3.0 Temperature Accuracy (C) 2.0 1.0 0.0 -1.0 -2.0 -3.0 -55 -35 -15 5 25 45 TA (C) 65 85 105 125 VDD = 2.7V VDD = 3.3V VDD = 5.0V VDD = 5.5V 12-Bit Resolution 160 Samples FIGURE 2-4: Temperature Accuracy Histogram, TA = +25C. 400 350 300 IDD (A) 250 200 150 100 50 -55 -35 -15 5 25 45 TA (C) 65 85 105 125 VDD = 2.7V VDD = 3.3V VDD = 5.0V VDD = 5.5V FIGURE 2-2: Average Temperature Accuracy vs. Ambient Temperature. 3.0 Temperature Accuracy (C) 2.0 1.0 0.0 -1.0 -2.0 -3.0 -55 -35 -15 5 25 45 TA (C) 65 85 105 125 9-Bit 10-Bit 11-Bit 12-Bit FIGURE 2-5: Temperature. Supply Current vs. Ambient Resolution VDD = 3.3V 160 Samples 1 0.8 ISHDN (A) 0.6 0.4 0.2 0 -55 -35 -15 5 25 45 TA (C ) 65 85 105 125 FIGURE 2-3: Average Temperature Accuracy vs. Ambient Temperature, VDD = 3.3V. FIGURE 2-6: Shutdown Current vs. Ambient Temperature. 2004 Microchip Technology Inc. DS21909B-page 5 3.0 -3.0 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% TA = +25C VDD = 3.3V 5 lots 32 Samples/lot 160 Samples Occurrences MCP9800/1/2/3 Note: Unless otherwise noted: VDD = 2.7V to 5.5V. 48 ALERT & SDA I OL (mA) VOL = 0.6V VDD = 5.5V VDD = 3.3V VDD = 2.7V 145 Average of 10 samples per package Temperature Data (C) 42 36 30 24 18 12 6 -55 -35 -15 5 25 45 TA (C) 65 125 105 85 65 45 25 5 SOIC MSOP SOT-23 27C (Air) to 125C (Oil bath) 85 105 125 -2 0 2 4 6 8 10 12 14 16 18 20 Time (s) FIGURE 2-7: ALERT and SDA IOL vs. Ambient Temperature. FIGURE 2-9: MCP980X Thermal Response vs Time. 0.4 IOL = 3mA ALERT & SDA V OL (V) 0.3 0.2 0.1 0 -55 -35 -15 5 25 45 TA (C) 65 85 105 125 VDD = 5.5V VDD = 3.3V VDD = 2.7V FIGURE 2-8: ALERT and SDA Output VOL vs. Ambient Temperature. DS21909B-page 6 2004 Microchip Technology Inc. MCP9800/1/2/3 3.0 PIN DESCRIPTION The descriptions of the pins are listed in Table 3-1. TABLE 3-1: MCP9800 MCP9802 SOT-23-5 5 4 3 2 -- -- -- 1 PIN FUNCTION TABLE MCP9801 MCP9803 MSOP, SOIC 1 2 3 4 5 6 7 8 Symbol SDA SCLK ALERT GND A2 A1 A0 VDD Function Bidirectional Serial Data Serial Clock Input Temperature Alert Output Ground Address Select Pin (bit 2) Address Select Pin (bit 1) Address Select Pin (bit 0) Power Supply Input 3.1 Serial Data Pin (SDA) 3.5 ALERT Output The SDA is a bidirectional input/output pin, used to serially transmit data to and from the host controller. This pin requires a pull-up resistor to output data. The MCP9800/1/2/3's ALERT pin is an open-drain output pin. The device outputs an alert signal when the ambient temperature goes beyond the userprogrammed temperature limit. 3.2 Serial Clock Pin (SCLK) 3.6 Address Pins (A2, A1, A0) These pins are device or slave address input pins and are available only with the MCP9801/03. The device addresses for the MCP9800/02 are factory-set. The address pins are the Least Significant bits (LSb) of the device address bits. The Most Significant bits (MSb) (A6, A5, A4, A3) are factory-set to <1001>. This is illustrated in Table 3-2. The SCLK is a clock input pin. All communication and timing is relative to the signal on this pin. The clock is generated by the host controller on the bus. 3.3 Power Supply Input (VDD) The VDD pin is the power pin. The operating voltage, as specified in the DC electrical specification table, is applied on this pin. TABLE 3-2: SLAVE ADDRESS A6 1 1 1 A5 0 0 0 A4 0 0 0 A3 1 1 1 A2 0 1 X A1 0 0 X A0 0 1 X 3.4 Ground (GND) Device MCP9800/02A0 MCP9800/02A5 MCP9801/03 Note: The GND pin is the system ground pin. User-selectable address is shown by X. 2004 Microchip Technology Inc. DS21909B-page 7 MCP9800/1/2/3 4.0 FUNCTIONAL DESCRIPTION 4.1 Temperature Sensor The MCP9800/1/2/3 family of temperature sensors consists of a band-gap type temperature sensor, a Analog-to-Digital Converter (ADC), user-programmable registers and a 2-wire I2C/SMBus protocol compatible serial interface. Resolution One-Shot Shutdown Fault Queue Alert Polarity Alert Comp/Int Configuration Register Temperature Register THYST Register TSET Register Register Pointer 9-Bit 10-Bit 11-Bit 12-Bit Where: T = temperature in kelvin VBE = change in diode base-emitter voltage k = Boltzmann's constant q = electron charge IC1 and IC2 = currents with n:1 ratio The MCP9800/1/2/3 uses the difference in the baseemitter voltage of a transistor while its collector current is changed from IC1 to IC2. With this method, the VBE depends only on the ratio of the two currents and the ambient temperature, as shown in Equation 4-1. EQUATION 4-1: VBE = ----- x ln ( IC 1 IC 2 ) q kT ADC 4.2 Analog-to-Digital Converter Band-Gap Temperature Sensor I2CTM/SMBus Interface A sigma-delta analog-to-digital converter is used to convert VBE to a digital word that corresponds to the transistor temperature. The converter has an adjustable resolution from 9-bits (at 30 ms conversion time) to 12-bits (at 240 ms conversion time). Thus, it allows the user to make trade-offs between resolution and conversion time. Refer to Section 4.3.4 "Sensor Configuration Register (CONFIG)" and Section 4.3.4.7 " ADC Resolution" for details. FIGURE 4-1: Functional Block Diagram. DS21909B-page 8 2004 Microchip Technology Inc. MCP9800/1/2/3 4.3 Registers Resolution One-Shot Shutdown Fault Queue Alert Polarity Alert Comp/Int Configuration Register Temperature Register THYST Register TSET Register ALERT Output Control Logic ALERT Output The MCP9800/1/2/3 family has four registers that are user-accessible. These registers are specified as the ambient temperature register, the temperature limit-set register, the temperature hysteresis register and device configuration registers. The ambient temperature register is a read-only register and is used to access the ambient temperature data. The data from the ADC is loaded in parallel in the register. The temperature limit-set and temperature hysteresis registers are read/write registers that provide user-programmable temperature limits. If the ambient temperature drifts beyond the programmed limits, the MCP9800/1/2/3 outputs an alert signal using the ALERT pin (refer to Section 4.3.4.3 "ALERT Output Configuration"). The device configuration register provides access for the user to configure the MCP9800/1/2/3's various features. These registers are described in further detail in the following sections. FIGURE 1: Register Block Diagram. The registers are accessed by sending register pointer to the MCP9800/1/2/3 using the serial interface. This is an 8-bit pointer. However, the two Least Significant bits (LSb) are used as pointers and all other bits need to be cleared <0>. This device has additional registers that are reserved for test and calibration. If these registers are accessed, the device may not perform according to the specification. The pointer description is shown below. REGISTER 4-1: REGISTER POINTER U-0 0 bit 7 U-0 0 U-0 0 U-0 0 U-0 0 U-0 0 R/W-0 P1 R/W-0 P0 bit 0 bit 7-3 bit 2-0 Unimplemented: Read as `0' Pointer bits 00 = Temperature Register 01 = Configuration Register 10 = Temperature Hysteresis Register 11 = Temperature Limit-set Register Legend: R = Readable bit - n = Value at POR W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown 2004 Microchip Technology Inc. DS21909B-page 9 MCP9800/1/2/3 4.3.1 AMBIENT TEMPERATURE REGISTER (TA) The MCP9800/1/2/3 has a 16-bit read-only ambient temperature register (TA) that contains 9-bit to 12-bit temperature data. This data is formatted in two's complement. The bit assignments, as well as the corresponding resolution, is shown in the register assignment below. The refresh rate of this register depends on the selected ADC resolution. It takes 30 ms (typ.) for 9-bit data and 240 ms (typ.) for 12-bit data. Since this register is double-buffered, the user can read the register while the MCP9800/1/2/3 performs analog-todigital conversion in the background. The decimal code to ambient temperature conversion is shown in Equation 4-2: EQUATION 4-2: Where: n TA T A = Code x 2 n = -1, -2, -3 and -4 for 9-bit, 10-bit, 11-bit and 12-bit resolution, respectively = Ambient Temperature (C) Code= MCP980X output in decimal (Table 4-1) REGISTER 4-2: AMBIENT TEMPERATURE REGISTER (TA) R-0 25 C/bit R-0 24 C/bit R-0 23 C/bit R-0 22 C/bit R-0 21 C/bit R-0 20 C/bit bit 8 Upper Half: R-0 R-0 Sign 26 C/bit bit 15 Lower Half: R-0 2-1 C/bit bit 7 Note: R-0 2-2 C/bit R-0 2-3 C/bit R-0 2-4 C/bit R-0 0 R-0 0 R-0 0 R-0 0 bit 0 When the 9-bit, 10-bit or 11-bit resolutions are selected, bit 6, bit 7 or bit 8 will remain clear <0>, respectively. Legend: R = Readable bit - n = Value at POR W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown TABLE 4-1: 9-Bit +125C +25.4375C +0.5C AMBIENT TEMPERATURE TO CODE CONVERSION Ambient Temperature 10-Bit 11-Bit 12-Bit Binary Code Hexadecimal Decimal TA (C) Note 1: 2: 3: 0FA 250 +125 0111 1101 0uuu uuuu(1) 0001 1001 0uuu uuuu 032 50 +25 0000 0000 1uuu uuuu 001 1 +0.5 +125C 0111 1101 00uu uuuu 1F4 500 +125 +25.4375C 0001 1001 01uu uuuu 065 101 +25.25 +0.25C 0000 0000 01uu uuuu 001 1 +0.25 +125C 0111 1101 000u uuuu 3E8 1000 +125 +25.4375C 0001 1001 011u uuuu 0CB 203 +25.375 +0.125C 0000 0000 001u uuuu 001 1 +0.125 +125C 0111 1101 0000 uuuu 7D0 2000 +125 +25.4375C 0001 1001 0111 uuuu 197 407 +25.4375 +0.0625C 0000 0000 0001 uuuu 001 1 +0.0625 0C 0000 0000 0000 uuuu 000 0 0 -0.0625C 1111 1111 1111 uuuu(2) 001(3) -1 -0.0625 -25.4375C 1110 0110 1001 uuuu 197 -407 -25.4375 -55C 1100 1001 0000 uuuu 370 -880 -55 `u' represents unused bits. The MCP9800/1/2/3 clears <0> the unused bits. This data is in two's complement format, which indicates ambient temperature below 0C. Negative temperature magnitude in Hexadecimal. This conversion is done by complimenting each binary bit and adding 1. DS21909B-page 10 2004 Microchip Technology Inc. MCP9800/1/2/3 4.3.2 TEMPERATURE LIMIT-SET REGISTER (TSET) The MCP9800/1/2/3 has a 16-bit read/write Temperature Limit-Set register (TSET) which contains a 9-bit data in two's compliment format. This data represents a maximum temperature limit. If the ambient temperature exceeds this specified limit, the MCP9800/1/2/3 asserts an alert output. (Refer to Section 4.3.4.3 "ALERT Output Configuration"). This register uses the nine Most Significant bits (MSb) and all other bits are don't cares. The power-up default value of TSET register is 80C <0 1010 0000> in binary. REGISTER 4-3: Upper Half: R/W-0 Sign bit 15 TEMPERATURE LIMIT-SET REGISTER (TSET) R/W-0 25 C/bit R/W-0 24 C/bit R/W-0 23 C/bit R/W-0 22 C/bit R/W-0 21 C/bit R/W-0 20 C/bit bit 8 Lower Half: R/W-0 2-1 C/bit bit 7 R-0 0 R-0 0 R-0 0 R-0 0 R-0 0 R-0 0 R-0 0 bit 0 R/W-0 26 C/bit Legend: R = Readable bit - n = Value at POR W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown 2004 Microchip Technology Inc. DS21909B-page 11 MCP9800/1/2/3 4.3.3 TEMPERATURE HYSTERESIS REGISTER (THYST) The MCP9800/1/2/3 has a 16-bit read/write temperature hysteresis register (THYST) that contains a 9-bit data in two's compliment format. This register is used to set a hysteresis for the TSET limit. Therefore, the data represents a minimum temperature limit. If the ambient temperature drifts below the specified limit, the MCP9800/1/2/3 asserts an alert output (refer to Section 4.3.4.3 "ALERT Output Configuration"). This register uses the nine Most Significant bits (MSb) and all other bits are don't cares. The power-up default value of THYST register is 75C <0 1001 0110> in binary. REGISTER 4-4: Upper Half: R/W-0 Sign bit 15 TEMPERATURE HYSTERESIS REGISTER (THYST) R/W-0 25 C/bit R/W-0 24 C/bit R/W-0 23 C/bit R/W-0 22 C/bit R/W-0 21 C/bit R/W-0 20 C/bit bit 8 Lower Half: R/W-0 2-1 C/bit bit 7 R/W-0 26 C/bit R-0 0 R-0 0 R-0 0 R-0 0 R-0 0 R-0 0 R-0 0 bit 0 Legend: R = Readable bit - n = Value at POR W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown DS21909B-page 12 2004 Microchip Technology Inc. MCP9800/1/2/3 4.3.4 SENSOR CONFIGURATION REGISTER (CONFIG) The MCP9800/1/2/3 has an 8-bit read/write configuration register (CONFIG) that allows the user to select the different features. These features include shutdown, ALERT output select as comparator or interrupt output, ALERT output polarity, fault queue cycle, temperature measurement resolution and One-shot mode (single conversion while in shutdown). These functions are described in detail in the following sections. REGISTER 4-5: CONFIGURATION REGISTER (CONFIG) R/W-0 One-Shot bit 7 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 ALERT Polarity R/W-0 COMP/ INT R/W-0 Shutdown bit 0 Resolution Fault Queue bit 7 ONE-SHOT bit 1 = Enabled 0 = Disabled (Power-up default) ADC RESOLUTION bit 00 = 9 bit (Power-up default) 01 = 10 bit 10 = 11 bit 11 = 12 bit FAULT QUEUE bit 00 = 1 (Power-up default) 01 = 2 10 = 4 11 = 6 ALERT POLARITY bit 1 = Active-High 0 = Active-Low (Power-up default) COMP/INT bit 1 = Interrupt Mode 0 = Comparator Mode (Power-up default) SHUTDOWN bit 1 = Enable 0 = Disable (Power-up default) Legend: R = Readable bit - n = Value at POR W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown bit 5-6 bit 3-4 bit 2 bit 1 bit 0 2004 Microchip Technology Inc. DS21909B-page 13 MCP9800/1/2/3 4.3.4.1 Shutdown Mode 4.3.4.3 ALERT Output Configuration The Shutdown mode disables all power-consuming activities (including temperature sampling operations) while leaving the serial interface active. The device consumes 1 A (max.) in this mode. It remains in this mode until the configuration register is updated to enable continuous conversion or until power is recycled. In Shutdown mode, the CONFIG, TA, TSET and THYST registers can be read or written. However, the serial bus activity will increase the shutdown current. The ALERT output can be configured as either a comparator output or as Interrupt Output mode using bit 1 of CONFIG. The polarity can also be specified as an active-high or active-low, using bit 2 of CONFIG. The following sections describe each Output mode and Figure 4-2 shows graphical description. 4.3.4.4 Comparator Mode 4.3.4.2 One-Shot Mode The MCP9800/1/2/3 can also be used in a One-shot mode that can be selected using bit 7 of the CONFIG register. The One-shot mode performs a single temperature measurement and returns to Shutdown mode. This mode is especially useful for low-power applications where temperature is measured upon command from a controller. For example, a 9-bit TA in One-shot mode consumes 200 A (typ.) for 30 ms and 0.1 A (typ.) during shutdown. To access this feature, the device needs to initially be in Shutdown mode. This is done by sending a byte to the CONFIG register with bit 0 set <1> and bit 7 cleared <0>. Once the device is in Shutdown mode, CONFIG needs to be written again with bit 0 and bit 7 set <1>. This begins the single conversion cycle of 30 ms for 9-bit data. Once the conversion is completed, TA is updated and bit 7 of CONFIG becomes cleared <0> by the MCP9800/1/2/3. In the Comparator mode, the ALERT output is asserted when TA is greater than TSET. The pin remains active until TA is lower than THYST. The Comparator mode is useful for thermostat-type applications such as turning on a cooling fan or triggering a system shutdown when the temperature exceeds a safe operating range. In the Comparator mode, if the device enters the Shutdown mode with asserted ALERT output, the output remains active during shutdown. The device must be operating in continuous conversion, with TA below THYST, for the ALERT output to be deasserted. 4.3.4.5 Interrupt Mode TABLE 4-6: SHUTDOWN AND ONE-SHOT MODE DESCRIPTION One-Shot (Bit 7) Shutdown (Bit 0) In the Interrupt mode, the ALERT output is asserted when TA is greater than TSET. However, the output is deasserted when the user performs a read from any register. This mode is designed for interrupt driven microcontroller based systems. The microcontroller receiving the interrupt will have to acknowledge the interrupt by reading any register from the MCP9800/1/2/3. This will clear the interrupt and the ALERT pin will become deasserted. When TA drifts below THYST, the MCP9800/ 1/2/3 outputs another interrupt and the controller needs to read a register to deassert the ALERT output. Shutting down the device will also reset or deassert the ALERT output. Operational Mode Continuous Conversion 0 0 Shutdown 0 1 Continuous Conversion 1 0 (One-shot is ignored) One-Shot 1 1 Note: The shutdown command <01> needs to be programmed before sending a oneshot command <11>. TSET TA THYST ALERT Comparator Mode Active-Low ALERT Interrupt Mode Active-Low FIGURE 4-2: Alert Output. DS21909B-page 14 2004 Microchip Technology Inc. MCP9800/1/2/3 4.3.4.6 Fault Queue 4.4 Summary of Power-up Default The fault queue feature can be used as a filter to lessen the probability of spurious activation of the ALERT pin. TA must remain above TSET for the consecutive number of conversion cycles selected using the Fault Queue bits. Bit 3 and bit 4 of CONFIG can be used to select up to six fault queue cycles. For example, if six fault queues are selected, TA must be greater than TSET for six consecutive conversions before ALERT is asserted as a comparator or an interrupt output. This queue setting also applies for THYST. TA must remain below THYST for six consecutive conversions before ALERT is deasserted (comparator mode) or before another interrupt is asserted (interrupt mode). The MCP9800/1/2/3 has an internal Power-on Reset (POR) circuit. If the power supply voltage VDD glitches down to the 1.7V (typ.) threshold, the device resets the registers to the power-up default settings. Table 4-2 shows the power-up default summary. TABLE 4-2: Register TA TSET THYST Pointer POWER-UP DEFAULTS Data (Hex) 0000 A000 9600 00 Power-up Defaults 0C 80C 75C Temperature register Continuous Conversion Comparator mode Active-Low Output Fault Queue 1 9-bit Resolution 4.3.4.7 ADC Resolution The MCP9800/1/2/3 provides access to select the ADC resolution from 9-bit to 12-bit using bit 6 and bit 5 of the CONFIG register. The user can gain better insight into the trends and characteristics of the ambient temperature by using a finer resolution. Increasing the resolution also reduces the quantization error. Figure 2-4 shows accuracy versus resolution. Table 4-1 shows the TA register conversion time for the corresponding resolution. CONFIG 00 TABLE 4-1: Bits 9 10 11 12 RESOLUTION AND CONVERSION TIME Resolution C/Bit (typ.) 0.5 0.25 0.125 0.0625 Conversion time tCONV ms (typ.) 30 60 120 240 2004 Microchip Technology Inc. DS21909B-page 15 MCP9800/1/2/3 5.0 5.1 SERIAL COMMUNICATION 2-Wire I2C/SMBus Compatible Interface 5.1.2 MASTER/SLAVE The MCP9800/1/2/3 serial clock input (SCLK) and the bidirectional serial data line (SDA) form a 2-Wire bidirectional serial port for communication. The following bus protocol has been defined: TABLE 5-1: Term Receiver Master Slave START STOP MCP980X SERIAL BUS CONVENTIONS Description Device receiving data from the bus The device that controls the serial bus, typically a microcontroller The device addressed by the master, such as the MCP9800/1/2/3 A unique signal from master to initiate serial interface with a slave A unique signal from the master to terminate serial interface from a slave The bus is controlled by a master device (typically a microcontroller) that controls the bus access and generates the start and stop conditions. The MCP9800/1/2/3 is a slave device and does not control other devices in the bus. Both master and slave devices can operate as either transmitter or receiver. However, the master device determines which mode is activated. 5.1.3 START/STOP CONDITION Transmitter Device sending data to the bus A high-to-low transition of the SDA line (while SCLK is high) is the start condition. All data transfers must be preceded by a start condition from the master. If a start condition is generated during data transfer, the MCP9800/1/2/3 resets and accepts the new start condition. A low-to-high transition of the SDA line (while SCLK is high) is the stop condition. All data transfers must be ended by a stop condition from the master. If a stop condition is introduced during data transmission, the MCP9800/1/2/3 releases the bus. 5.1.4 ADDRESS BYTE Read/Write A read or write to the MCP9800/1/2/3 registers ACK A receiver Acknowledges (ACK) the reception of each byte by polling the bus A receiver Not-Acknowledges (NAK) or releases the bus to show End-of-Data (EOD) Communication is not possible because the bus is in use The bus is in the idle state, both SDA and SCLK remain high SDA must remain stable before SCLK becomes high in order for a data bit to be considered valid. During normal data transfers, SDA only changes state while SCLK is low NAK Busy Not Busy Data Valid Following the start condition, the host must transmit the address byte to the MCP9800/1/2/3. The 7-bit address for the MCP9800/02A0 and MCP9800/02A5 is <1001000> and <1001101> in binary, respectively. The address for the MCP9802/03 is <1001,A2,A1,A0> in binary, where the A0, A1 and A2 bits are set externally by connecting the corresponding pins to VDD <1> or GND <0>. The 7-bit address transmitted in the serial bit stream must match the selected address for the MCP9800/1/2/3 to respond with an ACK. Bit 8 in the address byte is a read/write bit. Setting this bit to `1' commands a read operation, while `0' commands a write operation. Address Byte SCLK 1 2 3 4 5 6 7 8 9 A C K 5.1.1 DATA TRANSFER SDA Start 1 0 0 1 A2 A1 A0 Slave Address Data transfers are initiated by a start condition (START), followed by a 7-bit device address and a 1-bit read/write. Acknowledge (ACK) from slave confirms the reception of each byte. Each access must be terminated by a stop condition (STOP). Data transfer may be initiated when the bus is in IDLE. Address Code R/W MCP9800/1/2/3 Response FIGURE 5-1: Device Addressing. DS21909B-page 16 2004 Microchip Technology Inc. MCP9800/1/2/3 5.1.5 DATA VALID 5.1.7 TIME OUT (MCP9802/03) After the start condition, each bit of data in transmission needs to be settled for time specified by tSU-DATA before SCLK toggles from low-to-high (refer to the Serial Interface Timing Specification). If the SCLK stays low for time specified by tOUT, the MCP9802/03 resets the serial interface. This dictates the minimum clock speed as specified in the SMBus specification. The I2C bus specification does not limit clock speed and, therefore, the master can hold the clock indefinitely to process data (MCP9800/01 only). 5.1.6 ACKNOWLEDGE (ACK) Each receiving device, when addressed, is obliged to generate an acknowledge bit after the reception of each byte. The master device must generate an extra clock pulse for ACK to be recognized. The acknowledging device has to pull down the SDA line for tSU-DATA before the low-to-high transition of SCLK from the Master and remains pulled down for tH-DATA after high-to-low transition of SCLK. During read, the master must signal an End-of-Data (EOD) to the slave by not generating an ACK bit once the last bit has been clocked out of the slave. In this case, the slave will leave the data line released to enable the master to generate the stop condition. 2004 Microchip Technology Inc. DS21909B-page 17 MCP9800/1/2/3 5.2 Graphical Representation of the MCP9800/1/2/3 Serial Protocols Read 1-byte Data 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SCLK A P 1 P 0 A C K SDA S 1 0 0 1 A 2 A 1 A 0 WC K 0 0 0 0 0 0 Address Byte MCP980X 1 2 3 4 5 6 7 Pointer MCP980X 8 1 2 3 4 5 6 7 8 SCLK A 2 A 1 A 0 A K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 N A K SDA S 1 0 0 1 RC P Address Byte MCP980X Read 2-byte Data 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Data Master SCLK A P 1 P 0 A C K SDA S 1 0 0 1 A 2 A 1 A 0 WC K 0 0 0 0 0 0 Address Byte MCP980X 1 2 3 4 5 6 7 8 1 Pointer MCP980X 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SCLK A 2 A 1 A 0 A RCD DDDDDD K 15 14 13 12 11 10 9 D 8 A C K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 N A K SDA S 1 0 0 1 P Address Byte MCP980X MSB Data Master LSB Data Master S = START Condition P = STOP Condition FIGURE 5-2: Read 1-byte and 2-byte data from a Register. DS21909B-page 18 2004 Microchip Technology Inc. MCP9800/1/2/3 Write 1-byte Data 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SCLK A K A C K A C K SDA S 1 0 0 1 A 2 A 1 A 0 WC 0 0 0 0 0 0 P 1 P 0 D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 P Address Byte MCP980X Pointer MCP980X Data MCP980X Write 2-byte Data 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SCLK A K A C K SDA S 1 0 0 1 A 2 A 1 A 0 WC 0 0 0 0 0 0 P 1 P 0 Address Byte MCP980X Pointer MCP980X 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 DDDDDDD 15 14 13 12 11 10 9 D 8 A C K DD 76 D 5 D 4 D 3 D 2 D 1 D 0 A C K P MSB Data S = START Condition P = STOP Condition MCP980X LSB Data MCP980X FIGURE 5-3: Write 1-byte and 2-byte data from a Register. 2004 Microchip Technology Inc. DS21909B-page 19 MCP9800/1/2/3 Register Pointer Setting for Continuous Reception 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SCLK A P 1 P 0 A C K SDA S 1 0 0 1 A 2 A 1 A 0 WC K 0 0 0 0 0 0 Address Byte MCP980X Receive 1-byte Data 1 2 3 4 5 6 7 Pointer MCP980X 8 1 2 3 4 5 6 7 8 SCLK A K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 N A K SDA S 1 0 0 1 A 2 A 1 A 0 RC P Address Byte MCP980X Receive Another 1-byte Data 1 2 3 4 5 6 7 8 1 2 3 Data Master 4 5 6 7 8 SCLK A 2 A 1 A 0 A K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 N A K SDA S 1 0 0 1 RC P Address Byte MCP980X Data Master Note: User can continue to receive 1-byte data indefinitely from a previously set register pointer. S = START Condition P = STOP Condition FIGURE 5-4: Receive 1-byte data from previously set pointer. DS21909B-page 20 2004 Microchip Technology Inc. MCP9800/1/2/3 Register Pointer Setting for Continuous Reception 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 SCLK A P 1 P 0 A C K SDA S 1 0 0 1 A 2 A 1 A 0 WC K 0 0 0 0 0 0 Address Byte MCP980X Receive 2-byte Data 1 2 3 4 5 6 7 8 1 2 3 4 5 6 Pointer MCP980X 7 8 1 2 3 4 5 6 7 8 S 1 0 0 1 A 2 A 1 A 0 A RCD DDDDDD K 15 14 13 12 11 10 9 D 8 A C K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 N A K P Address Byte MCP980X Receive Another 2-byte Data 1 2 3 4 5 6 7 8 1 2 MSB Data Master LSB Data Master 3 4 5 6 7 8 1 2 3 4 5 6 7 8 S 1 0 0 1 A 2 A 1 A 0 A RCD DDDDDD K 15 14 13 12 11 10 9 D 8 A C K D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 N A K P Address Byte MCP980X Note: MSB Data Master LSB Data Master User can continue to receive 2-byte data indefinitely from a previously set register pointer. S = START Condition P = STOP Condition FIGURE 5-5: Receive 2-byte data from previously set pointer. 2004 Microchip Technology Inc. DS21909B-page 21 MCP9800/1/2/3 6.0 6.1 APPLICATIONS INFORMATION SDA SCLK Connecting to the Serial Bus PIC16F737 Microcontroller 24LC01 EEPROM TC654 Fan Speed Controller The SDA and SCLK serial interface are open-drain pins that require pull-up resistors. This configuration is shown in Figure 6-1. VDD PICmicro(R) Microcontroller R R MCP980X SDA SCLK MCP980X Temperature Sensor FIGURE 6-2: Multiple Devices on SMBus. FIGURE 6-1: Interface. Pull-up Resistors On Serial The ALERT output can be wire-ORed with a number of other open-drain devices. In such applications, the output needs to be programmed as an active-low output. Most systems will require pull-up resistors for this configuration. For the SMBus protocol, the number of devices connected to the bus are limited only by the maximum rise and fall times of the SDA and SCLK lines. Unlike the I2C specifications, SMBus does not specify a maximum bus capacitance value. Rather, it specifies 350 A (max.) current through the pull-up resistor. Therefore, the value of the pull-up resistors will vary depending on the system's supply voltage (VDD). The pull-up resistor values for a 5V system ranges 14.3 k to 50 k. Minimizing bus capacitance is still very important, as it directly affects the rise and fall times of the SDA and SCLK lines. Although SMBus specifications only require the SDA and SCLK lines to pull down 350 A (max.) with 0.4V (max.) voltage drop, the MCP9800/1/2/3 is designed to meet 0.4V (max.) voltage drop at 3 mA of current. This allows the MCP9800/1/2/3 to drive lower values of pullup resistors and higher bus capacitance. In this application, all devices on the bus must meet the same pull-down current requirements. 6.3 Layout Considerations The MCP9800/1/2/3 does not require any additional components besides the Master controller in order to measure temperature. However, it is recommended that a decoupling capacitor of 0.1 F to 1 F be used between the VDD and GND pins. A high-frequency ceramic capacitor is recommended. It is necessary for the capacitor to be located as close as possible to the power pins in order to provide effective noise protection. 6.4 Thermal Considerations 6.2 Typical Application The MCP9800/1/2/3 measures temperature by monitoring the voltage of a diode located in the die. A low impedance thermal path between the die and the Printed Circuit Board (PCB) is provided by the pins. Therefore, the MCP9800/1/2/3 effectively monitors the temperature of the PCB. However, the thermal path for the ambient air is not as efficient because the plastic device package functions as a thermal insulator. A potential for self-heating errors can exist if the MCP9800/1/2/3 SDA and SCLK communication lines are heavily loaded with pull-ups. Typically, the selfheating error is negligible because of the relatively small current consumption of the MCP9800/1/2/3. However, in order to maximize the temperature accuracy, the SDA and SCLK pins need to be lightly loaded. Microchip provides several microcontroller product lines with Master Synchronous Serial Port Modules (MSSP) that include I2C interface mode. This module implements all master and slave functions and simplifies the firmware development overhead. Figure 6-2 shows a typical application using the PIC16F737 as a master to control other Microchip slave products, such as EEPROM, fan speed controllers and the MCP980X temperature sensor connected to the bus. DS21909B-page 22 2004 Microchip Technology Inc. MCP9800/1/2/3 7.0 7.1 PACKAGING INFORMATION Package Marking Information 5-Lead SOT-23 Example: XXNN Part Number MCP9800A0T-M/OTG MCP9800A5T-M/OTG MCP9800 LDNN LJNN Part Number MCP9802A0T-M/OTG MCP9802A5T-M/OTG MCP9802 JKNN JRNN 8-Lead MSOP Example: XXXXX YWWNNN G9803M 425256 8-Lead SOIC (150 mil) Example: XXXXXXXX XXXXYYWW NNN GMCP9803 M/SN0425 256 Legend: XX...X YY WW NNN Customer specific information* Year code (last 2 digits of calendar year) Week code (week of January 1 is week `01') Alphanumeric traceability code Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line thus limiting the number of available characters for customer specific information. * Standard OTP marking consists of Microchip part number, year code, week code, and traceability code. 2004 Microchip Technology Inc. DS21909B-page 23 MCP9800/1/2/3 5-Lead Plastic Small Outline Transistor (OT) (SOT-23) E E1 p B p1 D n 1 c A A2 L A1 Number of Pins Pitch p1 Outside lead pitch (basic) Overall Height A .035 .057 0.90 Molded Package Thickness A2 .035 .051 0.90 Standoff A1 .000 .006 0.00 Overall Width E .102 .118 2.60 Molded Package Width E1 .059 .069 1.50 Overall Length D .110 .122 2.80 Foot Length L .014 .022 0.35 Foot Angle 0 10 0 c Lead Thickness .004 .008 0.09 Lead Width B .014 .020 0.35 Mold Draft Angle Top 0 10 0 Mold Draft Angle Bottom 0 10 0 *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .005" (0.127mm) per side. EIAJ Equivalent: SC-74A Drawing No. C04-091 Units Dimension Limits n p MIN INCHES* NOM 5 .038 .075 .046 .043 .003 .110 .064 .116 .018 5 .006 .017 5 5 MAX MIN MILLIMETERS NOM 5 0.95 1.90 1.18 1.10 0.08 2.80 1.63 2.95 0.45 5 0.15 0.43 5 5 MAX 1.45 1.30 0.15 3.00 1.75 3.10 0.55 10 0.20 0.50 10 10 DS21909B-page 24 2004 Microchip Technology Inc. MCP9800/1/2/3 8-Lead Plastic Micro Small Outline Package (MS) (MSOP) E E1 p D 2 B n 1 A c A1 (F) A2 L Number of Pins Pitch A .043 Overall Height A2 .030 .037 Molded Package Thickness .000 .006 A1 Standoff E Overall Width E1 Molded Package Width D Overall Length L .016 .031 Foot Length Footprint (Reference) F Foot Angle 0 8 c Lead Thickness .003 .009 .009 .016 Lead Width B Mold Draft Angle Top 5 15 5 15 Mold Draft Angle Bottom *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MO-187 Drawing No. C04-111 Units Dimension Limits n p MIN INCHES NOM 8 .026 BSC .033 .193 TYP. .118 BSC .118 BSC .024 .037 REF .006 .012 - MAX MIN MILLIMETERS* NOM 8 0.65 BSC 0.75 0.85 0.00 4.90 BSC 3.00 BSC 3.00 BSC 0.40 0.60 0.95 REF 0 0.08 0.22 5 5 - MAX 1.10 0.95 0.15 0.80 8 0.23 0.40 15 15 2004 Microchip Technology Inc. DS21909B-page 25 MCP9800/1/2/3 8-Lead Plastic Small Outline (SN) - Narrow, 150 mil Body (SOIC) E E1 p D 2 B n 1 h 45 c A A2 L A1 Number of Pins Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter Significant Characteristic Units Dimension Limits n p A A2 A1 E E1 D h L c B MIN .053 .052 .004 .228 .146 .189 .010 .019 0 .008 .013 0 0 INCHES* NOM 8 .050 .061 .056 .007 .237 .154 .193 .015 .025 4 .009 .017 12 12 MAX MIN .069 .061 .010 .244 .157 .197 .020 .030 8 .010 .020 15 15 MILLIMETERS NOM 8 1.27 1.35 1.55 1.32 1.42 0.10 0.18 5.79 6.02 3.71 3.91 4.80 4.90 0.25 0.38 0.48 0.62 0 4 0.20 0.23 0.33 0.42 0 12 0 12 MAX 1.75 1.55 0.25 6.20 3.99 5.00 0.51 0.76 8 0.25 0.51 15 15 Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057 DS21909B-page 26 2004 Microchip Technology Inc. MCP9800/1/2/3 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. Device XX X -X /XX X Examples: a) MCP9800A0T-M/OTG Slave address `000', Tape and Reel, -55C to +125C, PB Free SOT-23 package. MCP9800A5T-M/OTG Slave address `101', Tape and Reel, -55C to +125C, PB Free SOT-23 package. MCP9801-M/MSG -55C to +125C, PB Free 8LD MSOP package. Tape and Reel, -55C to +125C, PB Free 8LD MSOP package. -55C to +125C, PB Free 8LD SOIC package. Tape and Reel, -55C to +125C, PB Free 8LD SOIC package. Slave address `000', Tape and Reel, -55C to +125C, SOT-23 package. Slave address `101', Tape and Reel, -55C to +125C, SOT-23 package. -55C to +125C, PB Free 8LD MSOP package. Tape and Reel, -55C to +125C, PB Free 8LD MSOP package. -55C to +125C, PB Free 8LD SOIC package. Tape and Reel, -55C to +125C, PB Free 8LD SOIC package. Slave Tape & Reel Temperature Package PB Free Address Range b) Device: MCP9800: MCP9801: MCP9802: MCP9803: Temperature Sensor Temperature Sensor Temperature Sensor Temperature Sensor a) A0 = Slave address set to `000' A5 = Slave address set to `101' b) MCP9801T-M/MSG Tape and Reel: T = Blank = Tape and Reel c) MCP9801-M/SNG d) Temperature Range: M = -55C to +125C a) Package: OT MS SN = Plastic Small Outline Transistor (SOT-23), 5-lead = Plastic Micro Small Outline (MSOP), 8-lead = Plastic SOIC, (150 mil Body), 8-lead MCP9801T-M/SNG MCP9802A0T-M/OT b) MCP9802A5T-M/OT PB Free: G = Lead Free device a) MCP9803-M/MSG b) MCP9803T-M/MSG c) MCP9803-M/SNG d) MCP9803T-M/SNG Sales and Support Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. 3. Your local Microchip sales office The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277 The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com) to receive the most current information on our products. 2004 Microchip Technology Inc. DS21909B-page 27 MCP9800/1/2/3 NOTES: DS21909B-page 28 2004 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: * * Microchip products meet the specification contained in their particular Microchip Data Sheet. Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." * * * Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip's products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. (c) 2004, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company's quality system processes and procedures are for its PICmicro(R) 8-bit MCUs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified. 2004 Microchip Technology Inc. DS21909B-page 29 WORLDWIDE SALES AND SERVICE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http:\\support.microchip.com Web Address: www.microchip.com Atlanta Alpharetta, GA Tel: 770-640-0034 Fax: 770-640-0307 Boston Westford, MA Tel: 978-692-3848 Fax: 978-692-3821 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260 Kokomo Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 San Jose Mountain View, CA Tel: 650-215-1444 Fax: 650-961-0286 Toronto Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509 ASIA/PACIFIC Australia - Sydney Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 China - Beijing Tel: 86-10-8528-2100 Fax: 86-10-8528-2104 China - Chengdu Tel: 86-28-8676-6200 Fax: 86-28-8676-6599 China - Fuzhou Tel: 86-591-750-3506 Fax: 86-591-750-3521 China - Hong Kong SAR Tel: 852-2401-1200 Fax: 852-2401-3431 China - Shanghai Tel: 86-21-5407-5533 Fax: 86-21-5407-5066 China - Shenyang Tel: 86-24-2334-2829 Fax: 86-24-2334-2393 China - Shenzhen Tel: 86-755-8203-2660 Fax: 86-755-8203-1760 China - Shunde Tel: 86-757-2839-5507 Fax: 86-757-2839-5571 China - Qingdao Tel: 86-532-502-7355 Fax: 86-532-502-7205 ASIA/PACIFIC India - Bangalore Tel: 91-80-2229-0061 Fax: 91-80-2229-0062 India - New Delhi Tel: 91-11-5160-8632 Fax: 91-11-5160-8632 Japan - Kanagawa Tel: 81-45-471- 6166 Fax: 81-45-471-6122 Korea - Seoul Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459 EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4420-9895 Fax: 45-4420-9910 France - Massy Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79 Germany - Ismaning Tel: 49-89-627-144-0 Fax: 49-89-627-144-44 Italy - Milan Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands - Drunen Tel: 31-416-690399 Fax: 31-416-690340 England - Berkshire Tel: 44-118-921-5869 Fax: 44-118-921-5820 09/27/04 DS21909B-page 30 2004 Microchip Technology Inc. |
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