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E2E0019-38-94
Semiconductor MSM6545/6575/6545L/6575L
Semiconductor Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller
This version: Sep. 1998 MSM6545/6575/6545L/6575L Previous version: Mar. 1996
GENERAL DESCRIPTION
MSM6545/6575/6545L/6575L is a 4-bit, low-power microcontroller manufactured in a CMOS silicon gate process. The microcontroller can be initialized and operated at a low supply voltage of 0.9 V. This single device contains a crystal oscillator circuit, voltage converter circuits, a time base counter, a ROM, a RAM, a stack RAM, I/O ports, interrupt function components, a serial I/O port, a buzzer output circuit, and an updown counter. This IC is driven by one battery and is well suited to products that need to be operated under low power consumption.
FEATURES
* The IC can be initialized and operated even at a low voltage of 0.9 V. * Low power consumption * ROM : 4096 words 17 bits (MSM6545/6545L) 2048 words 17 bits (MSM6575/6575L) * RAM : 256 words 4 bits (MSM6545/6545L) 128 words 4 bits (MSM6575/6575L) * I/O port Input-output port : 7 ports 4 bits Input port : 1 port 4 bits * Interrupt functions (real-time interrupt, external interrupt, and serial interrupt) * Serial I/O port : 8-bit sync communication * Buzzer output circuit * 4-bit decimal updown counter * 73 instructions * Minimum instruction execution time : 61 ms * Operation under single 1.5 V power supply (MSM6545/6575) A mask option allows the 3 V power supply to be used (MSM6545L/6575L) * Built-in 32.768 kHz crystal oscillator circuit * Package options: 44-pin plastic QFP (QFP44-P-910-0.80-K) : (Product name : MSM6545/6545L-GS-K) 44-pin plastic QFP (QFP44-P-910-0.80-2K) : (Product name : MSM6545/6545L-GS-2K) 44-pin plastic QFP (QFP44-P-910-0.80-K) : (Product name : MSM6575/6575L-GS-K) 44-pin plastic QFP (QFP44-P-910-0.80-2K) : (Product name : MSM6575/6575L-GS-2K) Chip indicates a code number.
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CCLK BU/D
4-Bit BCD COUNTER CCNT PGCONH PGCONL
PORT7
BLOCK DIAGRAM
Semiconductor
P7.3 P7.2 P7.1 P7.0
D-BUS
SCND0 SERIAL I/O S-bus
FLAG
P6.3 P6.2 P6.1 P6.0
SIN SOUT SCKL
SCND1 SBFFL SBFFH ACC
RAM MSM6545/6545L...256 4 bits MSM6575/6575L...128 4 bits PAGE WORK ADRS ALU
A-bus
PORT6
MODE
PORT5
P5.3 P5.2 P5.1 P5.0
PCZIOX
EIF INTERRUPT CONTROL
EIRT
IRQRT
FIEX
IRQEX
PNEX
IRQSIO
PRIO
PORT4
P4.3 P4.2 P4.1 P4.0
PCHZX0
FRMT
PORT3
P3.3 P3.2 P3.1 P3.0
PROGRAM COUNTER
PROGRAM ROM MSM6545/6545L ... 4096 17 bits MSM6575/6575L ... 2048 17 bits
MPX
PCIOX0
PORT2
MDTH
TEMPO
MDTL BUZZER
BD
P2.3 P2.2 P2.1 P2.0
PCHZ0
PORT1
P1.3 P1.2 P1.1 P1.0
INSTRUCTION REGISTER
PCIO0
ADDER
PORT0
P0.3 P0.2 P0.1 P0.0
XT
OSC
TMOUT TIME BASE COUNTER INSTRUCTION DECODER
STACK RAM VOLTAGE REGULATOR
XTB
SYSTEM CLOCK GENERATOR
VDD VSS1 VSS2 VEE VCP VCM
MSM6545/6575/6545L/6575L
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Semiconductor
MSM6545/6575/6545L/6575L
PIN CONFIGURATION (TOP VIEW)
38 P2.2 37 P2.1 36 P2.0 35 P1.3 34 P1.2
33 P1.1 32 P1.0 31 P0.3 30 P0.2 29 P0.1 28 P0.0 27 P5.0 26 P5.1 25 P5.2 24 P5.3 23 BD
44 P3.3
43 P3.2
42 P3.1
41 P3.0 XTB 15
40 P2.3 XT 16
P4.0 P4.1 P4.2 P4.3 RESET TEST1 TEST2 TEST3 P7.3/CCLK
1 2 3 4 5 6 7 8 9
P7.2/BU/D 10 P7.1/SIN 11
P7.0/SOUT 12
P6.3/SCLK 13
P6.0 14
VDD 17
39 VDD
VSS1 18
VCM 19
VCP 20
VSS2 21
44-Pin Plastic QFP Notes: 1. P6.3, P7.0 and P7.1 also function as serial port pins. P7.2, and P7.3 also function as updown counter pins. 2. P6.1 and P6.2 are not assigned pins.
VEE 22
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Semiconductor
MSM6545/6575/6545L/6575L
PIN DESCRIPTIONS
Symbol PORT0 (P0.0 to P0.3) PORT1 (P1.1 to P1.3) PORT2 (P2.0 to P2.3) PORT3 (P3.0 to P3.3) PORT4 (P4.0 to P4.3) PORT5 (P5.0 to P5.3) PORT6 (P6.0 to P6.3) PORT7 (P7.0 to P7.3) BD RESET TEST1 TEST2 TEST3 XT XTB VDD VSS1 VSS2 VCP VCM VEE I O -- -- -- -- -- I Type I/O I/O I/O I/O I/O I/O I/O Description 4-bit Input-output port, I/O switchable, with/without input pull-down resistor 4-bit Input-output port, I/O switchable, with/without input pull-down resistor 4-bit Input-output port, I/O switchable, with/without input pull-down resistor P2.0 to P2.3 External interrupt port
4-bit Input-output port, I/O switchable, with/without input pull-down resistor 4-bit Input-output port, I/O switchable, with/without input pull-down resistor 4-bit Input-output port, I/O switchable, with/without input pull-down resistor 4-bit Input-output port, I/O switchable, with/without input pull-down resistor 4-bit input port P6.3: SCLK P7.0: SOUT P7.1: SIN P7.2: BU/D P7.3: CCLK Shared with serial port Shared with 4-bit up/down counter
I
Tie to the negative pole of the battery when not used.
O I
Buzzer output pin Reset pin with input pull-down resistor Testing pins with input pull-down resistor Tie to the negative pole of the battery. Connection pins for crystal oscillator 0 V power supply pin -1.5 V supply pin (power supply pin for -1.5 V operation) -3.0 V supply pin (power supply pin for -3.0 V operation) Connection pins for internal potential development capacitor Supply pin for internal logic (constant voltage circuit output pin)
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Semiconductor
MSM6545/6575/6545L/6575L
ABSOLUTE MAXIMUM RATINGS (MSM6545/6575, 1.5 V, BUF = "0")
VDD = 0 V (VSS1 = battery voltage) Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol VSS1 VIN VOUT TSTG -- Ta = 25C Condition Rating -6.0 to +0.3 VSS1 - 0.3 to +0.3 VSS1 - 0.3 to +0.3 -55 to +125 C V Unit
Note: The input of the constant voltage circuit is equal to the output of the voltage converter (VSS2).
RECOMMENDED OPERATING CONDITIONS (MSM6545/6575, 1.5 V, BUF = "0")
VDD = 0 V (VSS1 = battery voltage) Parameter Operating Voltage Operating Temperature Oscillation Frequency Symbol Vop Top fOSC Condition -- -- -- Range -1.75 to -0.9 -20 to +70 32.768 Unit V C kHz
Note: The input of the constant voltage circuit is equal to the output of the voltage converter (VSS2).
ELECTRICAL CHARACTERISTICS (MSM6545/6575, 1.5 V, BUF = "0")
VDD = 0 V, VSS1 = -1.5 V (battery voltage), VSS2 = -3.0 V, fOSC = 32.768 kHz, CX = 35 pF, Ta = 25C Parameter Power Supply Current Oscillation Start Voltage Output Current 1 Output Current 2 Input Current 1 Input Leakage Current Input Current 3 Input Voltage Symbol IDD -VOSC -IOH1 IOL1 -IOH2 IOL2 IIH1 AIILA IIH3 -VIH -VIL Condition *1 Within 2 seconds VO = -0.5 V VO = -1.0 V VO = -0.5 V VO = -1.0 V VI = 0 V, in the input state, with pull-down resistor
VI = 0 V, -1.5 V, in the input state, without pull-down resistor
Min. Typ. Max. Unit Applied Pin -- -- 150 150 20 20 7 -- 70 -- 1.2 3 -- -- -- -- -- 15 -- 250 -- -- -- 0.9 -- -- -- -- 30 1 500 0.3 -- mA V mA mA mA mA mA V -- VSS1
PORT0 to PORT6*2 SOUT, SCLK
BD PORT0 to PORT6 *2
PORT0 to PORT7*2 SIN, SOUT, SCLK
VI = 0 V, with pull-down resistor --
RESET TEST1 to TEST3
All input pins
*1 Depends on the program. (Values in the above table are applied in the case where the software duty is about 5%.) *2 PORT0 = P0.0 to P0.3, PORT1 = P1.0 to P1.3, PORT2 = P2.0 to P2.3, PORT3 = P3.0 to P3.3, PORT4 = P4.0 to P4.3, PORT5 = P5.0 to P5.3, PORT6 = P6.0 to P6.3, PORT7 = P7.0 to P7.3 Note: The input of the constant voltage circuit is equal to the output of the voltage converter (VSS2).
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Semiconductor
MSM6545/6575/6545L/6575L
ABSOLUTE MAXIMUM RATINGS (MSM6545/6575, 1.5 V, BUF = "1")
VDD = 0 V (VSS1 = battery voltage) Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol VSS1 VIN VOUT TSTG -- Ta = 25C Condition Rating -6.0 to +0.3 VSS1 - 0.3 to +0.3 VSS1 - 0.3 to +0.3 -55 to +125 C V Unit
Note: The input of the constant voltage circuit is directly connected to the power supply (VSS1).
RECOMMENDED OPERATING CONDITIONS (MSM6545/6575, 1.5 V, BUF = "1")
VDD = 0 V (VSS1 = battery voltage) Parameter Operating Voltage Operating Temperature Oscillation Frequency Symbol Vop Top fOSC Condition -- -- -- Range -1.75 to -0.9 -20 to +70 32.768 Unit V C kHz
Note: The input of the constant voltage circuit is directly connected to the power supply (VSS1).
ELECTRICAL CHARACTERISTICS (MSM6545/6575, 1.5 V, BUF = "1")
VDD = 0 V, VSS1 = -1.5 V (battery voltage), VSS2 = -3.0 V, fOSC = 32.768 kHz, CX = 35 pF, Ta = 25C Parameter Power Supply Current Oscillation Start Voltage Output Current 1 Output Current 2 Input Current 1 Input Leakage Current Input Current 3 Input Voltage Symbol IDD -VOSC -IOH1 IOL1 -IOH2 IOL2 IIH1 AIILA IIH3 -VIH -VIL Condition *1 Within 2 seconds VO = -0.5 V VO = -1.0 V VO = -0.5 V VO = -1.0 V VI = 0 V, in the input state, with pull-down resistor
VI = 0 V, -1.5 V, in the input state, without pull-down resistor
Min. Typ. Max. Unit Applied Pin -- -- 150 150 20 20 7 -- 70 -- 1.2 1.5 -- -- -- -- -- 15 -- 250 -- -- -- 0.9 -- -- -- -- 30 1 500 0.3 -- mA V mA mA mA mA mA V -- VSS1
PORT0 to PORT6*2 SOUT, SCLK
BD PORT0 to PORT6 *2
PORT0 to PORT7*2 SIN, SOUT, SCLK
VI = 0 V, without pull-down resistor --
RESET TEST1 to TEST3
All input pins
*1 Depends on the program. (Values in the above table are applied in the case where the software duty is about 5%.) *2 PORT0 = P0.0 to P0.3, PORT1 = P1.0 to P1.3, PORT2 = P2.0 to P2.3, PORT3 = P3.0 to P3.3, PORT4 = P4.0 to P4.3, PORT5 = P5.0 to P5.3, PORT6 = P6.0 to P6.3, PORT7 = P7.0 to P7.3 Note: The input of the constant voltage circuit is directly connected to the power supply (VSS1).
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Semiconductor
MSM6545/6575/6545L/6575L
ABSOLUTE MAXIMUM RATINGS (MSM6545L/6575L, 3.0 V, BUF = "0")
VDD = 0 V (VSS2 = battery voltage) Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol VSS2 VIN VOUT TSTG -- Ta = 25C Condition Rating -6.0 to +0.3 VSS2 - 0.3 to +0.3 VSS2 - 0.3 to +0.3 -55 to +125 C V Unit
Note: The input of the constant voltage circuit is equal to the output of the voltage converter (VSS1).
RECOMMENDED OPERATING CONDITIONS (MSM6545L/6575L, 3.0 V, BUF = "0")
VDD = 0 V (VSS2 = battery voltage) Parameter Operating Voltage Operating Temperature Oscillation Frequency Symbol Vop Top fOSC Condition -- -- -- Range -3.5 to -1.8 -20 to +70 32.768 Unit V C kHz
Note: The input of the constant voltage circuit is equal to the output of the voltage converter (VSS1).
ELECTRICAL CHARACTERISTICS (MSM6545L/6575L, 3.0 V, BUF = "0")
VDD = 0 V, VSS1 = -1.5 V, VSS2 = -3.0 V (battery voltage), fOSC = 32.768 kHz, CX = 35 pF, Ta = 25C Parameter Power Supply Current Oscillation Start Voltage Output Current 1 Output Current 2 Input Current 1 Input Leakage Current Input Current 3 Input Voltage Symbol IDD -VOSC -IOH1 IOL1 -IOH2 IOL2 IIH1 AIILA IIH3 -VIH -VIL Condition *1 Within 2 seconds VO = -0.5 V VO = -2.5 V VO = -0.5 V VO = -2.5 V VI = 0 V, in the input state, with pull-down resistor
VI = 0 V, -3 V, in the input state, without pull-down resistor
Min. Typ. Max. Unit Applied Pin -- -- 500 500 20 20 50 -- 200 -- 2.5 0.75 -- -- -- -- -- 100 -- -- 1.8 -- -- -- -- 200 1 mA V mA mA mA mA -- VSS2
PORT0 to PORT6*2 SOUT, SCLK
BD PORT0 to PORT6 *2
PORT0 to PORT7*2 SIN, SOUT, SCLK
VI = 0 V, with pull-down resistor --
750 1500 mA -- -- 0.5 -- V
RESET TEST1 to TEST3
All input pins
*1 Depends on the program. (Values in the above table are applied in the case where the software duty is about 5%.) *2 PORT0 = P0.0 to P0.3, PORT1 = P1.0 to P1.3, PORT2 = P2.0 to P2.3, PORT3 = P3.0 to P3.3, PORT4 = P4.0 to P4.3, PORT5 = P5.0 to P5.3, PORT6 = P6.0 to P6.3, PORT7 = P7.0 to P7.3 Note: The input of the constant voltage circuit is equal to the output of the voltage converter (VSS1).
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Semiconductor
MSM6545/6575/6545L/6575L
ABSOLUTE MAXIMUM RATINGS (MSM6545L/6575L, 3.0 V, BUF = "1")
VDD = 0 V (VSS2 = battery voltage) Parameter Power Supply Voltage Input Voltage Output Voltage Storage Temperature Symbol VSS2 VIN VOUT TSTG -- Ta = 25C Condition Rating -6.0 to +0.3 VSS2 - 0.3 to +0.3 VSS2 - 0.3 to +0.3 -55 to +125 C V Unit
Note: The input of the constant voltage circuit is directly connected to the power supply (VSS2).
RECOMMENDED OPERATING CONDITIONS (MSM6545L/6575L, 3.0 V, BUF = "1")
VDD = 0 V (VSS2 = battery voltage) Parameter Operating Voltage Operating Temperature Oscillation Frequency Symbol Vop Top fOSC Condition -- -- -- Range -3.5 to -0.9 -20 to +70 32.768 Unit V C kHz
Note: The input of the constant voltage circuit is directly connected to the power supply (VSS2).
ELECTRICAL CHARACTERISTICS (MSM6545L/6575L, 3.0 V, BUF = "1")
VDD = 0 V, VSS1 = -1.5 V, VSS2 = -3.0 V (battery voltage), fOSC = 32.768 kHz, CX = 35 pF, Ta = 25C Parameter Power Supply Current Oscillation Start Voltage Output Current 1 Output Current 2 Input Current 1 Input Leakage Current Input Current 3 Input Voltage Symbol IDD -VOSC -IOH1 IOL1 -IOH2 IOL2 IIH1 AIIL A IIH3 -VIH -VIL Condition *1 Within 2 seconds VO = -0.5 V VO = -2.5 V VO = -0.5 V VO = -2.5 V VI = 0 V, in the input state, with pull-down resistor
VI = 0 V, -3 V, in the input state, without pull-down resistor
Min. Typ. Max. Unit Applied Pin -- -- 500 500 20 20 50 -- 200 -- 2.5 1.5 -- -- -- -- -- 100 -- -- 0.9 -- -- -- -- 200 1 mA V mA mA mA mA -- VSS2
PORT0 to PORT6*2 SOUT, SCLK
BD PORT0 to PORT6 *2
PORT0 to PORT7*2 SIN, SOUT, SCLK
VI = 0 V, with pull-down resistor --
750 1500 mA -- -- 0.5 -- V
RESET TEST1 to TEST3
All input pins
*1 Depends on the program. (Values in the above table are applied in the case where the software duty is about 5%.) *2 PORT0 = P0.0 to P0.3, PORT1 = P1.0 to P1.3, PORT2 = P2.0 to P2.3, PORT3 = P3.0 to P3.3, PORT4 = P4.0 to P4.3, PORT5 = P5.0 to P5.3, PORT6 = P6.0 to P6.3, PORT7 = P7.0 to P7.3 Note: The input of the constant voltage circuit is directly connected to the power supply (VSS2).
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Semiconductor
MSM6545/6575/6545L/6575L
NOTES ON USE
Power Supply for 0.9 V Microcontroller Series (Backup Flag and Constant-Voltage Circuit) The 0.9 V devices have a built-in constant-voltage circuit. The output of this constant-voltage circuit powers the microcontroller's internal logic circuits. Setting a backup flag (BUF) allows the input of the constant voltage circuit to be switched to either the battery or the output generated in the voltage converter, based on the battery voltage. A battery voltage of 1.5 V or 3.0 V can be selected.
VDD (0 V) VSS1 (-1.5 V) VSS2 (-3.0 V) VSS3* (-4.5 V)
Internal logic Voltage converter Backup flag (BUF)
XT XTAL
XTB Constant voltage circuit VR
VEE (About-1.3 V) LCD driver*
* The VSS3 pin is provided for the devices that contain an LCD driver.
The output (VEE) of the constant-voltage circuit is set at approximately -1.3 V. This allows the current consumed by the internal logic to be limited, irrespective of the battery voltage. However, if the input of the constant voltage circuit is below this set value (approximately - 1.3V), the output (VEE) is equal to the input. The 0.9 V microcontroller can be operated even if the internal voltage (output from the constant voltage circuit) falls to 0.9 V. Setting the backup flag allows a larger operating voltage margin despite changes in internal voltage due to noise. For example, for the 1.5 V specification, setting the backup flag at "0" supplies twice the battery voltage to the constant voltage circuit. Thus, even if the battery voltage falls to 0.9 V, the output voltage (VEE) is maintained at -1.3 V, providing a larger margin of operating voltage of the internal logic circuits, because 1.8 V is applied to the input of the constant-voltage circuit. Figures 1 to 4 show the internal status depending on the backup flag settings for the battery, as well as status features.
9/13
Semiconductor (Figure 1) 1.5 V Operation (Backup Flag = 1)
Internal status
MSM6545/6575/6545L/6575L
VDD = 0 V VDD VB = -1.5 V
Voltage converter
The battery level VSS1 is applied to the input of the constant voltage circuit. -0.9 to -1.75 V
VSS1 VSS2 (-3.0 V) VR VEE
Voltage doubler
Internal logic
Operating range
Current 1.5 mA* consumption Feature When the battery level is powered down, the internal circuit is powered directly by the battery.
* When the software duty is about 5%
(Figure 2) 1.5 V Operation (Backup Flag = 0)
VDD = 0 V VDD VB = -1.5 V
Voltage converter
Internal status
A doubled level of VSS2 is applied to the input of the constant voltage circuit. -0.9 to -1.75 V
VSS1 VSS2 (-3.0 V) VR VEE
Voltage doubler
Internal logic
Operating range
Current 3 mA* consumption Feature When the battery level is powered down, a larger operating voltage margin is gained, compared to the case of Figure 1.
* When the software duty is about 5%
(Figure 3) 3.0 V Operation (Backup Flag = 1)
The battery level VSS2 is applied to the input of the constant voltage circuit. -0.9 to -3.5 V
VDD = 0 V VDD (-1.5 V) VB = -3.0 V VSS2
Voltage converter
Internal status
VSS1
Voltage doubler
Internal logic
Operating range
Current 1.5 mA* consumption
VR VEE
Feature
When the battery level is powered down, the internal circuit is powered directly by the battery.
* When the software duty is about 5%
10/13
Semiconductor (Figure 4) 3.0 V Operation (Backup Flag = 0)
Internal status
MSM6545/6575/6545L/6575L
VDD = 0 V VDD (-1.5 V) VB = -3.0 V VSS2
Voltage converter
A doubled level of VSS1 is applied to the input of the constant voltage circuit. -1.8 to -3.5 V
VSS1
Voltage doubler
Internal logic
Operating range
Current 0.75 mA* consumption
VR VEE
Feature
When the battery level is powered down, a smaller operating voltage margin is gained, compared to the case of Figure 3.
* When the software duty is about 5%
11/13
Semiconductor
MSM6545/6575/6545L/6575L
PACKAGE DIMENSIONS
(Unit : mm) QFP44-P-910-0.80-K
Mirror finish
Package material Lead frame material Pin treatment Solder plate thickness Package weight (g)
Epoxy resin 42 alloy Solder plating 5 mm or more 0.35 TYP.
Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki's responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times).
12/13
Semiconductor
MSM6545/6575/6545L/6575L
(Unit : mm)
QFP44-P-910-0.80-2K
Mirror finish
Package material Lead frame material Pin treatment Solder plate thickness Package weight (g)
Epoxy resin 42 alloy Solder plating 5 mm or more 0.41 TYP.
Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki's responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times).
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