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INTEGRATED CIRCUITS
DATA SHEET
PCD3745A 8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
Product specification Supersedes data of 1997 Mar 04 File under Integrated Circuits, IC14 1999 Feb 02
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
CONTENTS 1 2 3 4 5 5.1 5.2 6 6.1 6.2 6.3 6.4 6.5 7 7.1 8 9 9.1 9.2 10 11 12 13 14 15 16 17 18 19 20 21 21.1 21.2 21.3 21.4 22 23 FEATURES GENERAL DESCRIPTION ORDERING INFORMATION BLOCK DIAGRAM PINNING INFORMATION Pinning Pin description REAL-TIME CLOCK (RTC) Oscillator Divider chain Frequency adjustment Clock Control Register (CLCR) Frequency Adjustment Register (FAR) PERIPHERAL COUNTER 1 AND COUNTER 2 Peripheral Counter Control Register (PCCR) THE RTC, COUNTER 1 AND COUNTER 2 INTERRUPTS REDUCED POWER MODES Idle mode Stop mode INSTRUCTION SET RESTRICTIONS TIMING RESET SUMMARY OF CONFIGURATIONS OTP PROGRAMMING SUMMARY OF DERIVATIVE REGISTERS LIMITING VALUES HANDLING DC CHARACTERISTICS AC CHARACTERISTICS PACKAGE OUTLINES SOLDERING Introduction Through-hole mount packages Surface mount packages Suitability of IC packages for wave, reflow and dipping soldering methods DEFINITIONS LIFE SUPPORT APPLICATIONS
PCD3745A
1999 Feb 02
2
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
1 FEATURES 2 GENERAL DESCRIPTION
PCD3745A
* 8-bit CPU, RAM and I/O * 4.5 kbytes OTP memory; 224 bytes RAM * 32 kHz adjustable crystal oscillator for real-time clock * Over 100 instructions (based on MAB8048) all of 1 or 2 cycles * 16 quasi-bidirectional I/O port lines * 8-bit programmable Timer/event counter 1 * Two 16-bit counters with count inputs pins * 2 single-level vectored interrupts: - external; peripheral Counters 1 and 2; RTC alarm - 8-bit programmable Timer/event counter 1 * Two test inputs, one of which also serves as the external interrupt input * Stop and Idle modes for power saving * Logic supply: 1.8 to 6 V * CPU clock frequency: 1 to 16 MHz * Operating temperature: -25 to +70 C * Manufactured in silicon gate CMOS process. 3 ORDERING INFORMATION
The PCD3745A is a microcontroller oriented towards communication and metering applications. It has 4.5 kbytes of One Time Programmable (OTP) memory, 224 bytes RAM and 16 I/O lines. The PCD3745A also incorporates a low power Real-Time Clock (RTC) and two low power 16-bit counters. The RTC runs using a 32 kHz crystal oscillator and is register adjustable. The RTC and the counters are able to operate in all microcontroller modes. The instruction set is based on that of the MAB8048 and is software compatible with the PCD33xxA family. This data sheet details the specific properties of the PCD3745A. The shared characteristics of the PCD33xxA family of microcontrollers are described in the "Data Handbook IC14; Section PCD33xxA Family", which should be read in conjunction with this publication.
PACKAGE TYPE NUMBER NAME PCD3745AP PCD3745AT PCD3745AH DIP28 SO28 LQFP32 DESCRIPTION plastic dual in-line package; 28 leads (600 mil) plastic small outline package; 28 leads; body width 7.5 mm plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm VERSION SOT117-1 SOT136-1 SOT358-1
1999 Feb 02
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P1.0 to P1.6 P1.7/RCO 7 RESIDENT OTP-ROM 4.5 kbytes PORT 0 FLIP-FLOP DECODE INTERNAL CLOCK FREQ. 30 RTC1 RTC2 RTC T1 8 8 32 MEMORY BANK FLIP-FLOPS P0.0 to P0.7 8 PORT 0 BUFFER PORT 1 BUFFER PORT 1 FLIP-FLOP TIMER/ EVENT COUNTER HIGHER PROGRAM COUNTER LOWER PROGRAM COUNTER PROGRAM STATUS WORD 8 8 8
4
Philips Semiconductors
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
BLOCK DIAGRAM
PCD3745A
8
5
8
8
8
8
8
8
8 INTERRUPT LOGIC
8
8
8
8
8
8
8 MULTIPLEXER REGISTER 0 REGISTER 1 REGISTER 2 REGISTER 3 REGISTER 4 REGISTER 5 REGISTER 6 REGISTER 7 8 LEVEL STACK (VARIABLE LENGTH) OPTIONAL SECOND REGISTER BANK
Fig.1 Block diagram.
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4
PCCR C1LB C1HB C2LB C2HB ACCUMULATOR TEMPORARY REGISTER 2 TEMPORARY REGISTER 1 RAM ADDRESS REGISTER ARITHMETIC INSTRUCTION REGISTER AND DECODER timer interrupt LOGIC UNIT external interrupt CLK1 CLK2 DECIMAL ADJUST STOP IDLE CE/T0 INTERRUPT CONDITIONAL BRANCH LOGIC CONTROL AND TIMING RESET INITIALIZE XTAL1 XTAL2 ACC ACC BIT TEST
MBH909
T1 CE/T0 TIMER FLAG CARRY
D E C O D E
DATA STORE
RESIDENT RAM ARRAY 224 bytes
OSCILLATOR
Product specification
PCD3745A
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
5 5.1 PINNING INFORMATION Pinning
PCD3745A
handbook, halfpage
P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 T1 XTAL1
1 2 3 4 5 6 7
28 P0.0 27 CLK2 26 CLK1 25 EMUN 24 VDD 23 RTC2 22 VSS
PCD3745A
8 9 21 RTC1 20 P1.7/RCO 19 P1.6 18 P1.5 17 P1.4 16 P1.3 15 P1.2
MBH910
XTAL2 10 RESET 11 CE/T0 12 P1.0 13 P1.1 14
Fig.2 Pin configuration (SOT117-1 and SOT136-1).
26 CLK2
n.c. 1 P0.5 2 P0.6 3 P0.7 4 T1 5 XTAL1 6 XTAL2 7 RESET 8
28 n.c.
handbook, full pagewidth
25 CLK1
32 P0.4
31 P0.3
30 P0.2
29 P0.1
27 P0.0
24 EMUN 23 VDD 22 RTC2
PCD3745A
21 VSS 20 RTC1 19 P1.7/RCO 18 P1.6 17 n.c.
P1.1 11
P1.0 10
P1.2 12
n.c. 13
P1.3 14
P1.4 15
CE/T0 9
P1.5 16
MBH911
Fig.3 Pin configuration (SOT358-1).
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
5.2 Pin description SOT117-1 and SOT136-1 packages SYMBOL P0.0 to P0.7 T1 XTAL1 XTAL2 RESET CE/T0 P1.0 to P1.6 P1.7/RCO RTC1 VSS RTC2 VDD EMUN CLK1 CLK2 Table 2 SOT358-1 package SYMBOL n.c. T1 XTAL1 XTAL2 RESET CE/T0 P1.0 to P1.6 P1.7/RCO RTC1 VSS RTC2 VDD EMUN CLK1 CLK2 P0.0 to P0.7 PIN 1, 13, 17, 28 5 6 7 8 9 10 to 12, 14 to 16, 18 19 20 21 22 23 24 25 26 27, 29 to 32, 2 to 4 not connected Test 1 or count input of 8-bit Timer/event counter 1 crystal oscillator or external clock input crystal oscillator output reset input chip enable or Test 0 Port 1: 7 quasi-bidirectional I/O lines DESCRIPTION PIN 28, 1 to 7 8 9 10 11 12 13 to 19 20 21 22 23 24 25 26 27 DESCRIPTION Port 0: 8 quasi-bidirectional I/O lines Test 1 or count input of 8-bit Timer/event counter 1 crystal oscillator or external clock input crystal oscillator output reset input chip enable or Test 0 Port 1: 7 quasi-bidirectional I/O lines
PCD3745A
Table 1
Port 1: 1 quasi-bidirectional I/O line/Real Clock Output 16 kHz RTC 32 kHz oscillator input ground RTC 32 kHz oscillator output positive supply voltage emulation pin, must be connected to VDD for normal mode operation. count input of 16-bit peripheral Counter 1 count input of 16-bit peripheral Counter 2
Port 1: 1 quasi-bidirectional I/O line/Real Clock Output 16 kHz RTC 32 kHz oscillator input ground RTC 32 kHz oscillator output positive supply voltage emulation pin, must be connected to VDD for normal mode operation. count input of 16-bit peripheral Counter 1 count input of 16-bit peripheral Counter 2 Port 0: 8 quasi-bidirectional I/O lines
1999 Feb 02
6
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
6 REAL-TIME CLOCK (RTC) 6.3 Frequency adjustment
PCD3745A
The RTC consists of a 32 kHz crystal oscillator, a 32 kHz to 1 second, 1.5 second and 1 minute divider chain, an 8-bit Frequency Adjustment Register (FAR) and the Clock Control Register (CLCR). The complete real-time clock section is independent of the microcontroller status, even in Idle or Stop mode. 6.1 Oscillator
The internal 32 kHz oscillator requires an external 32.768 kHz quartz crystal (a positive deviation up to +259 ppm is allowed by using frequency adjustment) and an external feedback resistor (4.7 M) connected between the RTC1 and RTC2 pins. The oscillator is controlled by the RUN bit in the Clock Control Register. 6.2 Divider chain
Frequency adjustment is used to extend the interrupt time by defining the number of 16 kHz clocks in the Frequency Adjustment Register that will be counted twice within the first 1 second or 1.5 second period after a minute interrupt. The DIV512 is reset if its contents is equal to FAR, this will extend the time of the next interrupt. This is done within the first 1 second or 1.5 seconds of every minute. If the second interrupt is used (ITS = 1 and SITS = 0), every 60th interval may be up to 15.3 ms longer than the others as a result of the frequency adjustment. If the 1.5 second interrupt is used (ITS = 1 and SITS = 1), the prolongation will affect every 40th interval. The adjusted Minute Interrupt Time (MIT) shows now a maximum deviation of 0.5 ppm. The frequency adjustment value of the real-time clock section is defined by the decimal value of the contents of the 8-bit Frequency Adjustment Register. It can be read or written. The significance of the individual bits is illustrated by the following equation: Minute Interrupt Time (MIT) = 60 x 2
14 ---------------FRCO
The divider chain operates with the 32 kHz oscillator output and divides this signal down to produce three different clocks with periods of 1 second, 1.5 second and 1 minute. Depending on the state of the ITS and SITS bits in the Clock Control Register, the falling edge of the 1 second, 1.5 second or 1 minute clock is used to set the Clock Interrupt Flag (CIF) in the Clock Control Register. Since the clock interrupt is used to let the microcontroller leave the Stop mode, it is wire ORed with the external interrupt (CE/T0) and has the same functionality, e.g. it must be enabled in the Clock Control Register (ECI = 1) and by execution of EN I. The clock interrupt will then be treated as an external interrupt Additionally, the divider chain generates a 16 kHz clock (RCO) that can be routed through port line P1.7/RCO, controlled by the ERCO bit in the Clock Control Register.
FAR + ----------2 14
Table 7 shows the recommended correction factor FAR for all allowed real-time clock frequencies (FRCO). The value of CLCR and FAR at reset is 00H.
1999 Feb 02
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RTC2 RTC2 32 kHz DIV2 DIV512 DIV32/DIV48 1.5 s 1.0 s P1.7/RCO RUN COMPARE LOGIC DIV60 60 s FAR register reset compare bit RTCI
handbook, full pagewidth
Philips Semiconductors
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
8
internal bus SITS TST2 TST1 ERCO RUN ITS CIF ECI CLCR INTERRUPT SELECT
MBH919
Product specification
PCD3745A
Fig.4 RTC block diagram.
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
6.4 Clock Control Register (CLCR) Clock Control Register (address 20H) 6 TST2 5 TST1 4 ERCO 3 RUN 2 ITS 1 CIF
PCD3745A
Table 3 7
0 ECI
SITS Table 4 BIT 7 6 5 4
Description of CLCR bits SYMBOL SITS TST2 TST1 ERCO DESCRIPTION Second Interrupt Time Select. If SITS = 1 and ITS = 1, then the interrupt time is 1.5 seconds. Test 2 input. This is a test bit and must be fixed at zero by user software. Test 1 input. This is a test bit and must be fixed at zero by user software. Enable 16 kHz Clock Output. If ERCO = 0, then P1.7/RCO is a port line. If ERCO = 1, then P1.7/RCO is a 16 kHz clock output. The port instructions for P1.7/RCO are not inhibited and therefore the state of both the port line and flip-flop may be read in and the port flip-flop may be written to by port instructions. Clock Run/Stop. If RUN = 0, then the 32 kHz oscillator is stopped and the divider chain is reset. If RUN = 1, then the 32 kHz oscillator and the divider chain are running. Interrupt Time Select. If ITS = 1 and SITS = 0, then the interrupt time is one second. If ITS = 0 and SITS = X, then the interrupt time is one minute. Clock Interrupt Flag. Set by hardware, if RTC divider chain overflows (every second, 1.5 second or minute depending on ITS) or by software. Reset: by software. Enable Clock Interrupt. If ECI = 0, the RTC interrupt is disabled. If ECI = 1, the RTC interrupt is enabled.
3 2 1 0
RUN ITS CIF ECI
6.5
Frequency Adjustment Register (FAR) Frequency Adjustment Register (address 21H) 6 FAR6 5 FAR5 4 FAR4 3 FAR3 2 FAR2 1 FAR1 0 FAR0
Table 5 7
FAR7 Table 6 BIT 7 6 5 4 3 2 1 0
Description of FAR bits SYMBOL FAR7 FAR6 FAR5 FAR4 FAR3 FAR2 FAR1 FAR0 DESCRIPTION The state of these 8-bits determine the frequency adjustment value for the real-time clock section; see Table 7.
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
Table 7 Selection of FRCO FAR (HEX) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 FRCO 16384.000 16384.018 16384.033 16384.051 16384.066 16384.084 16384.100 16384.117 16384.135 16384.150 16384.168 16384.184 16384.201 16384.217 16384.234 16384.250 16384.268 16384.283 16384.301 16384.316 16384.334 16384.350 16384.367 16384.385 16384.400 16384.418 16384.434 16384.451 16384.467 16384.484 16384.500 16384.518 16384.533 16384.551 FAR (HEX) 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43
PCD3745A
FRCO 16384.566 16384.584 16384.600 16384.617 16384.635 16384.650 16384.668 16384.684 16384.701 16384.717 16384.734 16384.750 16384.768 16384.783 16384.801 16384.816 16384.834 16384.850 16384.867 16384.885 16384.900 16384.918 16384.934 16384.951 16384.967 16384.984 16385.000 16385.018 16385.033 16385.051 16385.066 16385.084 16385.100 16385.117
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
FAR (HEX) 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64 65 FRCO 16385.135 16385.150 16385.168 16385.184 16385.201 16385.217 16385.234 16385.250 16385.268 16385.283 16385.301 16385.316 16385.334 16385.350 16385.367 16385.385 16385.400 16385.418 16385.434 16385.451 16385.467 16385.484 16385.500 16385.518 16385.533 16385.551 16385.566 16385.584 16385.600 16385.617 16385.635 16385.650 16385.668 16385.684 FAR (HEX) 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87
PCD3745A
FRCO 16385.701 16385.717 16385.734 16385.750 16385.768 16385.783 16385.801 16385.816 16385.834 16385.850 16385.867 16385.885 16385.900 16385.918 16385.934 16385.951 16385.967 16385.984 16386.000 16386.018 16386.033 16386.051 16386.066 16386.084 16386.100 16386.117 16386.135 16386.150 16386.168 16386.184 16386.201 16386.217 16386.234 16386.250
1999 Feb 02
11
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
FAR (HEX) 88 89 8A 8B 8C 8D 8E 8F 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F A0 A1 A2 A3 A4 A5 FRCO 16386.268 16386.283 16386.301 16386.316 16386.334 16386.350 16386.367 16386.385 16386.400 16386.418 16386.434 16386.451 16386.467 16386.484 16386.500 16386.518 16386.533 16386.551 16386.566 16386.584 16386.600 16386.617 16386.635 16386.650 16386.668 16386.684 16386.701 16386.717 16386.734 16386.750 FAR (HEX) A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF C0 C1 C2 C3
PCD3745A
FRCO 16386.768 16386.783 16386.801 16386.816 16386.834 16386.850 16386.867 16386.885 16386.900 16386.918 16386.934 16386.951 16386.967 16386.984 16387.000 16387.018 16387.033 16387.051 16387.066 16387.084 16387.100 16387.117 16387.135 16387.150 16387.168 16387.184 16387.201 16387.217 16387.234 16387.250
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
FAR (HEX) C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF E0 E1 FRCO 16387.268 16387.283 16387.301 16387.316 16387.334 16387.350 16387.367 16387.385 16387.400 16387.418 16387.434 16387.451 16387.467 16387.484 16387.500 16387.518 16387.533 16387.551 16387.566 16387.584 16387.600 16387.617 16387.635 16387.650 16387.668 16387.684 16387.701 16387.717 16387.734 16387.750 FAR (HEX) E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF
PCD3745A
FRCO 16387.768 16387.783 16387.801 16387.816 16387.834 16387.850 16387.867 16387.885 16387.900 16387.918 16387.934 16387.951 16387.967 16387.984 16388.002 16388.018 16388.035 16388.051 16388.068 16388.084 16388.102 16388.117 16388.135 16388.152 16388.168 16388.186 16388.201 16388.219 16388.234 16384.000
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
7 PERIPHERAL COUNTER 1 AND COUNTER 2
PCD3745A
The PCD3745A has two on-chip 16-bit peripheral counters: Counter 1 and Counter 2. Both counters can count pulses in the frequency range of 0 to 1 MHz and both will operate in all modes of the microcontroller (Idle, Stop and Operating modes). The count process and the interrupt on overflow function for each counter is enabled/disabled by setting the appropriate ECx and ECxI bits in the Peripheral Counter Control Register (PCCR). The count process starts with setting the ECx bit to a logic 1 and can be stopped in every state by resetting the ECx bit to a logic 0. The counter inputs are CLK1 for Counter 1 and CLK2 for Counter 2. Each counter input is connected to a Schmitt trigger in order to reduce noise susceptibility. A falling edge of the pulses on these inputs will increment the enabled counters by one. The 16-bit counters are also byte-wise read and writeable, e.g. they can be set to a specific value, for example to count less than 216 events (refer to Table 13 for register addresses). The 16-bit counters and the PCCR (see Table 8) are set to 0000H and 00H respectively, after reset. 7.1 Peripheral Counter Control Register (PCCR) Peripheral Counter Control Register (address 40H) 6 EC1I Description of PCCR bits SYMBOL EC1 5 0 4 C1F
Counting events during a write access may be lost. During a read access they are considered when the length of the count pulse is greater than 2/fxtal + 500 ns. To ensure correct operation it is recommended to disable the count process during a read or write operation to the counter registers. In the count mode, if the ECxI bit is set, an overflow (count transition from FFFFH to 0000H) of the counter will set the CxF bit, which starts the interrupt sequence. CxF is wired ORed with CE/T0 and consequently the effect is the same as an external interrupt. Within this interrupt sequence the interrupt source must be searched and CxF should be reset to enable the microcontroller to service future interrupts. CxF is set by hardware or software but can be reset by software. The operation of the 16-bit counters when used in a metering application is shown in Fig.5. Note: If the counter value is set from 0000H to FFFFH by software and the status 0000H was reached either by clocking (overflow) or by hardware reset the subsequent clock pulse (CLKx) will NOT set the interrupt flag (C1F or C2F) in the PCCR register!
Table 8 7 EC1 Table 9 BIT 7
3 EC2
2 EC2I
1 0
0 C2F
DESCRIPTION Enable Counter 1. If EC1 = 1, the counter is enabled and increments upwards every HIGH-to-LOW transition on pin CLK1. If EC1 = 0, the incrementing stops and the counter keeps the accumulated value. This bit is set/reset by software. Enable Counter 1 Interrupt Flag. When EC1I is set to a logic 1, the C1F event requests an interrupt. This bit is set/reset by software. not used Counter 1 Interrupt Flag. If C1F = 1, then a counter overflow has occurred in Counter 1. Set by hardware and software; reset by software. Enable Counter 2. If EC2 = 1, the counter is enabled and increments upwards every HIGH-to-LOW transition on pin CLK2. If EC2 = 0, the incrementing stops and the counter keeps the accumulated value. This bit is set/reset by software. Enable Counter 2 Interrupt Flag. When EC2I is set to a logic 1, the C2F event requests an interrupt. This bit is set/reset by software. not used Counter 2 Interrupt Flag. If C2F = 1, then a counter overflow has occurred in Counter 2. Set by hardware and software; reset by software.
6 5 4 3
EC1I 0 C1F EC2
2 1 0
EC2I 0 C2F
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
handbook, full pagewidth
8-bit internal bus
PCD3745A
CLK1 C1: 16-BIT COUNTER timer overflow peripheral counter control register counter interrupts C2F CPU interrupt
EC1 EC1I 0
C1F EC2 EC2I 0
INTERRUPT LOGIC
timer overflow CLK2 C2: 16-BIT COUNTER RTC RTC,timer and external interrupts
TIMER CE/T0 8-bit internal bus
MSC331
Fig.5 Operation of the 16-bit counters used in metering applications.
8
THE RTC, COUNTER 1 AND COUNTER 2 INTERRUPTS
As well as the CE/T0 interrupt three additional interrupt events are defined which have the same effect as an external interrupt (see "PCD33xxA family data sheet"). * Real Time Clock. This interrupt is controlled by the Clock Interrupt Flag (CIF) and the Enable Clock Interrupt (ECI) bit both of which reside in the Clock Control Register (see Tables 3 and 4) * Counter 1. This interrupt is controlled by the Counter 1 Interrupt Flag (C1F) and the Enable Counter 1 Interrupt Flag (EC1I) both of which are located in the Peripheral Counter Control Register (see Tables 8 and 9) * Counter 2. This interrupt is controlled by the Counter 2 Interrupt Flag (C2F) and the Enable Counter 2 Interrupt Flag (EC2I) both of which are located in the Peripheral Counter Control Register (see Tables 8 and 9). To use these interrupt sources the external interrupt must be enabled (EN I). Interrupt servicing is exactly the same as for an external interrupt. The interrupt routine must include instructions that will determine the interrupt source and remove the cause of the derivative interrupt by explicitly clearing CIF, C1F or C2F.
By not clearing these flags the microcontroller is unable to detect interrupts of the same type. In the interrupt routine the CE/T0 interrupt has to be deduced from the fact that neither CIF or C1F or C2F is set. If the specific interrupt is not used, CIF, C1F or C2F may be directly tested by the program. Obviously, CIF, C1F or C2F can also be asserted under program control, e.g. to generate a software interrupt. Although the clock interrupt and Counter 1 and Counter 2 are part of a derivative function they are linked to the external interrupt (see Fig.6). A clock, Counter 1 or Counter 2 interrupt request is serviced under the following circumstances: * No interrupt routine is being processed * No external interrupt request is pending * The enable clock interrupt and enable Counter 1 and Counter 2 interrupt bit in the derivative Clock Control Register and Peripheral Counter Control Register respectively is set.
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
CALL EI / CLEAR EIF
handbook, full pagewidth
RESET DIS I
CLEAR CE / T0 RTC1 C1F C2F DIGITAL FILTER / LATCH
S EIF
Q INTERRUPT VECTOR LOGIC
CLEAR EIF
R
EN I
S
Q
EI ENABLE DIS I RESET R Q
S IIP RETR RESET R
Q
Q
TIMER OVERFLOW CLEAR TIF EN TCNT I DIS TCNT I RESET
S
Q TIF
T2F
R
MBH912
S
Q
TI ENABLE R Q
Fig.6 Simplified interrupt logic schematic (the R input overrules the S input for all flags).
1999 Feb 02
16
CALL TI / CLEAR TIF
CALL SI
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
9 9.1 REDUCED POWER MODES Idle mode
PCD3745A
10 INSTRUCTION SET RESTRICTIONS RAM space is restricted to 224 bytes; care should be taken to avoid accesses to non-existing RAM locations. 11 TIMING The PCD3745A operates over a clock frequency range of 1 to 16 MHz. 12 RESET In addition to the conditions given in the "PCD33xxA family data sheet", all derivative registers are cleared in the reset state.
In Idle mode, the Real-time clock, Counter 1 and Counter 2 sections remain operative. In addition to the description given in the "PCD33xxA family data sheet", Idle mode may be left by a clock or a counter interrupt event (see Section 8). 9.2 Stop mode
In Stop mode the Real-Time Clock, Counter 1, Counter 2 and the 32 kHz crystal oscillator sections remain operative (depending on the state of the RUN and ECx bits in CLCR and PCCR). In addition to the description given in the "PCD33xxA family data sheet", Stop mode may be left by a clock or a counter interrupt event (see Section 8). 13 SUMMARY OF CONFIGURATIONS Table 10 Port configuration (see notes 1 and 2) PORT 0 TYPE 0 PCD3745A Notes 1. 1 = standard I/O; 3 = push-pull Output. 3R 1 3R 2 3S 3 3S 4 3R 5 3R
PORT 1 6 3R 7 3R 0 1S 1 1S 2 1S 3 1S 4 1R 5 1R 6 1R 7 1S
2. Port state after reset: S = Set (HIGH) and R = Reset (LOW). Table 11 Product configurations FEATURE Program/data code Oscillator transconductance DESCRIPTION any mix of instructions and data up to OTP memory size of 4.5 kbytes fixed at LOW transconductance (gmL); the maximum crystal clock frequency is 6 MHz
1999 Feb 02
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Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
14 OTP PROGRAMMING
PCD3745A
The programming of the PCD3745A OTP is based on the OM4260 programmer (Ceibo MP-51) which is available from Philips. The OM4260 works in conjunction with various adapters and supports the package types listed in Table 12. The low voltage OTP program memory used is of Anti-Fuse-PROM type and cannot be erased after programming. Thus, the complete OTP memory cannot be tested by the factory, but only partially via a special test array. The average expected yield is 97%. Detailed information on the OTP programming is available in the "PCD3755x Application Note", available from Philips Sales offices. Table 12 OTP programming overview DEVICE Ceibo MP-51 PCD3745A PHILIPS TYPE NUMBER OM4260 OM5007 OM5030 OM5037; note 1 Note 1. As the OM5037 is only a socket converter, the OM5007 is also needed to program the PCD3745A in the LQFP32 package. 15 SUMMARY OF DERIVATIVE REGISTERS Table 13 Register map ADDRESS (HEX) 00 to 1F 20 21 22 to 3F 40 41 42 43 44 45 to FF not used Clock Control Register (CLCR) Frequency Adjustment Register (FAR) not used Peripheral Counter Control Register (PCCR) Counter 1 Low Byte (C1LB) Counter 1 High Byte (C1HB) Counter 2 Low Byte (C2LB) Counter 2 High Byte (C2HB) not used REGISTER 7 - SITS FAR7 - EC1 6 - TST2 FAR6 - EC1I 5 - TST1 FAR5 - 0 4 - ERCO FAR4 - C1F 3 - RUN FAR3 - EC2 2 - ITS FAR2 - EC2I 1 - CIF FAR1 - 0 0 - ECI FAR0 - C2F CEIBO TYPE NUMBER MP-51 programmer base adapter DIP adapter SO socket converter LQFP32 SUPPORTED PACKAGE - DIP28 SO28 LQFP32
C1LB7 C1LB6 C1LB5 C1LB4 C1LB3 C1LB2 C1LB1 C1LB0 C1HB7 C1HB6 C1HB5 C1HB4 C1HB3 C1HB2 C1HB1 C1HB0 C2LB7 C2LB6 C2LB5 C2LB4 C2LB3 C2LB2 C2LB1 C2LB0 C2HB - C2HB - C2HB - C2HB - C2HB - C2HB - C2HB - C2HB -
1999 Feb 02
18
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
16 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134); see notes 1 and 2. SYMBOL VDD VI II, IO Ptot PO ISS Tstg Tj Notes supply voltage all input voltages DC input or output current total power dissipation power dissipation per output ground supply current storage temperature operating junction temperature PARAMETER MIN. -0.8 -0.5 -10 - - -50 -65 -
PCD3745A
MAX. +7.0 VDD + 0.5 +10 125 30 +50 +150 90 V V
UNIT
mA mW mW mA C C
1. Stresses above those listed under Limiting Values may cause permanent damage to the device. 2. Parameters are valid over the operating temperature range unless otherwise specified. All voltages are with respect to VSS unless otherwise stated. 17 HANDLING Inputs and outputs are protected against electrostatic discharge in normal handling. However, it is good practice to take normal precautions appropriate to handling MOS devices (see "Handling MOS devices"). 18 DC CHARACTERISTICS VDD = 1.8 to 6 V; VSS = 0 V; Tamb = -25 to +70 C; fxtal = 3.58 MHz; fRTC = 32768 Hz; all voltages with respect to VSS unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply (see Figs 8, 9, 10, 11, 12 and 13) VDD supply voltage operating RAM data retention in Stop mode IDD IDD(ID) IDD(stp) operating supply current supply current Idle mode supply current Stop mode VDD = 3 V; note 1 VDD = 3 V; note 1 1.8 1.0 - - - - 0.35 0.25 1.0 - 3.0 6 6 0.7 0.5 5.0 10 6.0 V V mA mA A A A
Tamb = 25 C; counters and RTC not - running; notes 1 and 2 Tamb = -25 to +70 C; counters and RTC not running; notes 1 and 2 Tamb = 25 C; counters and RTC running at 33 kHz; notes 1 and 2 - -
Inputs VIL VIH ILI LOW-level input voltage HIGH-level input voltage input leakage current VSS VI VDD 0 -1 - - 0.3VDD V VDD +1 V A 0.7VDD -
1999 Feb 02
19
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
SYMBOL PARAMETER CONDITIONS MIN. TYP.
PCD3745A
MAX. - - -300 -
UNIT
Port outputs (see Figs 14, 15 and 16) IOL IOH IOH LOW-level port sink current HIGH-level port pull-up source current HIGH-level port push-pull source current VDD = 3 V; VO = 0.4 V VDD = 3 V; VO = 2.7 V VDD = 3 V; VO = 0 V VDD = 3 V; VO = 2.6 V 0.7 -10 - -0.7 3.5 -30 -140 -3.5 mA A A mA
Real-time clock 32 kHz oscillator gm f/f CI(RTC1) CO(RTC2) Vth(LH) Vth(HL) tW fc gmL Rf Notes 1. VIL = VSS; VIH = VDD; outputs open: a) Maximum values: external clock at XTAL1 and XTAL2 open-circuit. b) Typical values: at 25 C; crystal connected between XTAL1 and XTAL2. 2. VDD = 1.8 V; RESET, T1 and CE/T0 at VSS. 3. For proper operation of the counters the count pulse width (tW), negative and positive, should be 500 ns. If the intention is to access the counters in read mode during counting, the count pulse width should be at least 2/fxtal + 500 ns. 4. Verified on sample bases. Not tested during production. transconductance frequency adjustment RTC1 pin input capacitance RTC2 pin output capacitance Vi(p-p) < 50 mV 2 -0.6 - - VDD = 5 V; Tamb = +25 C; see Fig.7 - VDD = 5 V; Tamb = +25 C; see Fig.7 - notes 3 and 4; see Fig.7 note 4 500 0 10 - 10 10 50 +0.6 - - S ppm pF pF
Clock inputs of peripheral counters (CLK1 and CLK2) positive-going threshold voltage negative-going threshold voltage pulse width count frequency 0.6VDD - 0.4VDD - - - - 1 V V ns MHz
XTAL oscillator LOW transconductance feedback resistor VDD = 5 V; see Fig.18 0.2 0.3 0.4 1.0 1.0 3.0 mA/V M
1999 Feb 02
20
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
MGB784
handbook, halfpage
6
IDD(stp) (A) (2) 4 CLK1 CLK2 or CLK1 CLK2 0.4VDD tW
MBH913
0.6VDD 0.4VDD
0.6VDD
2
(1) 0 1 1.5 3 3.35
5
VDD (V)
7
(1) RTC stopped; -25 to 70 C. (2) RTC running; -25 to 70 C.
Fig.8 Fig.7 Definition of count pulse width (tW).
Typical supply current (IDD) in Stop mode as a function of supply voltage (VDD).
handbook, halfpage
50
MBH914
MBH915
IDD(stp) (A)
handbook, halfpage
6
40
IDD (mA)
4
30
20
2
10
3.58 MHz
0 3 10
104
105
fc (Hz)
106
0 1 3 5 VDD (V) 7
Fig.9
Typical supply current (IDD(stp)) in Stop mode as a function of counter frequency, both counters running in parallel. (VDD = 3 V; Tamb = +25 C),
Measured with crystal between XTAL1 and XTAL2.
Fig.10 Typical operating supply current (IDD) as a function of supply voltage (VDD).
1999 Feb 02
21
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
MBG645
MBH916
handbook, halfpage
6
handbook, halfpage
6
IDD (mA) 4 5V
IDD(ID) (mA)
4
2
2
3V 0 1 10 fxtal (MHz) 10 0 1 3 5
3.58 MHz
2
VDD (V)
7
Measured with function generator on XTAL1.
Measured with crystal between XTAL1 and XTAL2.
Fig.11 Typical operating supply current (IDD) as a function of clock frequency (fxtal).
Fig.12 Typical supply current (IDD(ID)) in Idle mode as a function of supply voltage (VDD).
MBH918
MBH917
handbook, halfpage
6
handbook, halfpage
6
IDD(ID) (mA) 4
IOL (mA) 4
2
2
5V 3V 0 1 10 fxtal (MHz) 10
2
0 1 3 5 VDD (V) 7
Measured with function generator on XTAL1.
VO = 0.4 V.
Fig.13 Typical supply current (IDD(ID)) in Idle mode as a function of clock frequency (fxtal).
Fig.14 Typical LOW level port output sink current (IOL) as a function of supply voltage (VDD).
1999 Feb 02
22
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
handbook, halfpage
-300
MLC422
handbook, halfpage
-12
MLC410
IOH (A) -200
VO = 0 V
IOH (mA) -8
-100 VO = 0.9 VDD
-4
0 1 3 5 VDD (V) 7
0 1 3 5 VDD (V) 7
VO = VDD - 0.4 V.
Fig.15 Typical HIGH level output pull-up source current (IOH) as a function of supply voltage (VDD).
Fig.16 Typical HIGH level push-pull output source current (IOH) as a function of supply voltage (VDD).
1999 Feb 02
23
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
19 AC CHARACTERISTICS VDD = 1.8 to 6 V; VSS = 0 V; Tamb = -25 to +70 C; all voltages with respect to VSS unless otherwise specified. SYMBOL tr tf fxtal PARAMETER rise time all outputs fall time all outputs clock frequency see Fig.17 CONDITIONS VDD = 5 V; Tamb = 25 C; CL = 50 pF MIN. - - 1 TYP. 30 30 - MAX. - - 16 UNIT ns ns MHz
handbook, halfpage f
18 xtal (MHz) 15
MLA493
12
9 guaranteed operating range
6
3
0
1
3
5
VDD (V)
7
Fig.17 Maximum clock frequency (fxtal) as a function of supply voltage (VDD).
1999 Feb 02
24
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
handbook, halfpage
10
MBG644
handbook, halfpage
-18
MGB791
gm (mS)
gm (S) Tamb = -14 -25 oC
1 gmL +25 oC +70 oC
-10
10
1
6 1 3 5 VDD (V) 7 1 3 5 VDD (V) 7
Fig.18 Typical transconductance of XTAL oscillator as a function of supply voltage (VDD).
Fig.19 Typical RTC oscillator transconductance as a function of supply voltage (VDD).
1999 Feb 02
25
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
20 PACKAGE OUTLINES
handbook, plastic dual in-line package; 28 leads (600 mil) DIP28: full pagewidth
PCD3745A
SOT117-1
seating plane
D
ME
A2
A
L
A1 c Z e b1 b 28 15 MH wM (e 1)
pin 1 index E
1
14
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 5.1 0.20 A1 min. 0.51 0.020 A2 max. 4.0 0.16 b 1.7 1.3 0.066 0.051 b1 0.53 0.38 0.020 0.014 c 0.32 0.23 0.013 0.009 D (1) 36.0 35.0 1.41 1.34 E (1) 14.1 13.7 0.56 0.54 e 2.54 0.10 e1 15.24 0.60 L 3.9 3.4 0.15 0.13 ME 15.80 15.24 0.62 0.60 MH 17.15 15.90 0.68 0.63 w 0.25 0.01 Z (1) max. 1.7 0.067
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT117-1 REFERENCES IEC 051G05 JEDEC MO-015AH EIAJ EUROPEAN PROJECTION
ISSUE DATE 92-11-17 95-01-14
1999 Feb 02
26
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
SO28: plastic small outline package; 28 leads; body width 7.5 mm
SOT136-1
D
E
A X
c y HE vMA
Z 28 15
Q A2 A1 pin 1 index Lp L 1 e bp 14 wM detail X (A 3) A
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. OUTLINE VERSION SOT136-1 REFERENCES IEC 075E06 JEDEC MS-013AE EIAJ EUROPEAN PROJECTION A max. 2.65 0.10 A1 0.30 0.10 A2 2.45 2.25 A3 0.25 0.01 bp 0.49 0.36 c 0.32 0.23 D (1) 18.1 17.7 0.71 0.69 E (1) 7.6 7.4 0.30 0.29 e 1.27 HE 10.65 10.00 L 1.4 Lp 1.1 0.4 Q 1.1 1.0 0.043 0.039 v 0.25 0.01 w 0.25 0.01 y 0.1 Z
(1)
0.9 0.4
0.012 0.096 0.004 0.089
0.019 0.013 0.014 0.009
0.419 0.043 0.050 0.055 0.394 0.016
0.035 0.004 0.016
8o 0o
ISSUE DATE 95-01-24 97-05-22
1999 Feb 02
27
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
PCD3745A
LQFP32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm
SOT358-1
c
y X
24 25
17 16 ZE
A
e E HE wM bp pin 1 index 32 1 e bp D HD wM B vM B 8 ZD vM A 9 detail X L Lp A A2 A 1 (A 3)
0
2.5 scale
5 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A max. 1.60 A1 0.20 0.05 A2 1.45 1.35 A3 0.25 bp 0.4 0.3 c 0.18 0.12 D (1) 7.1 6.9 E (1) 7.1 6.9 e 0.8 HD 9.15 8.85 HE 9.15 8.85 L 1.0 Lp 0.75 0.45 v 0.2 w 0.25 y 0.1 Z D (1) Z E (1) 0.9 0.5 0.9 0.5 7 0o
o
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT358 -1 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 95-12-19 97-08-04
1999 Feb 02
28
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
21 SOLDERING 21.1 Introduction
PCD3745A
Typical reflow peak temperatures range from 215 to 250 C. The top-surface temperature of the packages should preferable be kept below 230 C. 21.3.2 WAVE SOLDERING
This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "Data Handbook IC26; Integrated Circuit Packages" (document order number 9398 652 90011). There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mount components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mount ICs, or for printed-circuit boards with high population densities. In these situations reflow soldering is often used. 21.2 21.2.1 Through-hole mount packages SOLDERING BY DIPPING OR BY SOLDER WAVE
Conventional single wave soldering is not recommended for surface mount devices (SMDs) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. To overcome these problems the double-wave soldering method was specifically developed. If wave soldering is used the following conditions must be observed for optimal results: * Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. * For packages with leads on two sides and a pitch (e): - larger than or equal to 1.27 mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; - smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves at the downstream end. * For packages with leads on four sides, the footprint must be placed at a 45 angle to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves downstream and at the side corners. During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Typical dwell time is 4 seconds at 250 C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. 21.3.3 MANUAL SOLDERING
The maximum permissible temperature of the solder is 260 C; solder at this temperature must not be in contact with the joints for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg(max)). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. 21.2.2 MANUAL SOLDERING
Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 C, contact may be up to 5 seconds. 21.3 21.3.1 Surface mount packages REFLOW SOLDERING
Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several methods exist for reflowing; for example, infrared/convection heating in a conveyor type oven. Throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating method. 1999 Feb 02 29
Fix the component by first soldering two diagonally-opposite end leads. Use a low voltage (24 V or less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C.
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
21.4 Suitability of IC packages for wave, reflow and dipping soldering methods
PCD3745A
SOLDERING METHOD MOUNTING PACKAGE WAVE Through-hole mount DBS, DIP, HDIP, SDIP, SIL Surface mount BGA, SQFP HLQFP, HSQFP, HSOP, HTSSOP, SMS PLCC(4), SO, SOJ LQFP, QFP, TQFP SSOP, TSSOP, VSO Notes 1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the Drypack information in the "Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods". 2. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. 3. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink (at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version). 4. If wave soldering is considered, then the package must be placed at a 45 angle to the solder wave direction. The package footprint must incorporate solder thieves downstream and at the side corners. 5. Wave soldering is only suitable for LQFP, QFP and TQFP packages with a pitch (e) equal to or larger than 0.8 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm. 6. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm. 22 DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. 23 LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications. suitable(2) not suitable not not not suitable(3) recommended(4)(5) recommended(6) suitable REFLOW(1) - suitable suitable suitable suitable suitable - - - - - DIPPING suitable
1999 Feb 02
30
Philips Semiconductors
Product specification
8-bit microcontroller with 4.5 kbytes OTP memory and 32 kHz real-time clock
NOTES
PCD3745A
1999 Feb 02
31
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For all other countries apply to: Philips Semiconductors, International Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 (c) Philips Electronics N.V. 1999
SCA62
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Printed in The Netherlands
275002/00/02/pp32
Date of release: 1999 Feb 02
Document order number:
9397 750 05153

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