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d a t a sh eet product speci?cation supersedes data of 1997 mar 04 file under integrated circuits, ic14 1999 feb 02 integrated circuits pcd3745a 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock
1999 feb 02 2 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a contents 1 features 2 general description 3 ordering information 4 block diagram 5 pinning information 5.1 pinning 5.2 pin description 6 real-time clock (rtc) 6.1 oscillator 6.2 divider chain 6.3 frequency adjustment 6.4 clock control register (clcr) 6.5 frequency adjustment register (far) 7 peripheral counter 1 and counter 2 7.1 peripheral counter control register (pccr) 8 the rtc, counter 1 and counter 2 interrupts 9 reduced power modes 9.1 idle mode 9.2 stop mode 10 instruction set restrictions 11 timing 12 reset 13 summary of configurations 14 otp programming 15 summary of derivative registers 16 limiting values 17 handling 18 dc characteristics 19 ac characteristics 20 package outlines 21 soldering 21.1 introduction 21.2 through-hole mount packages 21.3 surface mount packages 21.4 suitability of ic packages for wave, reflow and dipping soldering methods 22 definitions 23 life support applications
1999 feb 02 3 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 1 features 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: C external; peripheral counters 1 and 2; rtc alarm C 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. 2 general description 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. 3 ordering information type number package name description version PCD3745AP dip28 plastic dual in-line package; 28 leads (600 mil) sot117-1 pcd3745at so28 plastic small outline package; 28 leads; body width 7.5 mm sot136-1 pcd3745ah lqfp32 plastic low pro?le quad ?at package; 32 leads; body 7 7 1.4 mm sot358-1
1999 feb 02 4 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here in this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force land scape pages to be ... 4 block diagram handbook, full pagewidth mbh909 port 0 flip-flop port 0 buffer higher program counter lower program counter program status word memory bank flip-flops resident otp-rom 4.5 kbytes decode 5 888 8 p0.0 to p0.7 8 8 88 8 8 8 timer/ event counter 32 internal clock freq. 30 t1 port 1 buffer port 1 flip-flop p1.0 to p1.6 8 7 8 p1.7/rco rtc rtc1 rtc2 8 oscillator ram address register accumulator temporary register 1 temporary register 2 arithmetic instruction register and decoder decimal adjust control and timing xtal2 xtal1 reset ce/t0 stop idle interrupt initialize conditional branch logic ce/t0 timer flag carry acc acc bit test multiplexer 8 level stack (variable length) optional second register bank data store d e c o d e register 0 register 1 register 2 register 3 register 4 register 5 register 6 register 7 timer interrupt external interrupt clk2 clk1 resident ram array 224 bytes 8 logic unit t 1 interrupt logic 8 c2hb 8 8 8 8 8 pcd3745a c2lb c1hb c1lb pccr fig.1 block diagram.
1999 feb 02 5 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 5 pinning information 5.1 pinning fig.2 pin configuration (sot117-1 and sot136-1). handbook, halfpage 1 2 3 4 5 6 7 8 9 10 11 12 13 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 p0.1 p0.2 p0.3 p0.4 p0.5 p0.6 p0.7 t1 xtal1 xtal2 reset ce/t0 p1.0 p1.1 p0.0 clk2 clk1 emun rtc2 v ss v dd rtc1 p1.7/rco p1.6 p1.5 p1.4 p1.3 p1.2 pcd3745a mbh910 fig.3 pin configuration (sot358-1). handbook, full pagewidth mbh911 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 n.c. p0.5 p0.6 p0.7 t1 xtal1 xtal2 reset ce/t0 p1.0 p1.1 p1.2 p1.3 p1.4 p1.5 n.c. p1.6 rtc1 emun clk1 clk2 p0.0 n.c. p0.1 p0.2 p0.3 p0.4 rtc2 v ss v dd p1.7/rco n.c. pcd3745a
1999 feb 02 6 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 5.2 pin description table 1 sot117-1 and sot136-1 packages table 2 sot358-1 package symbol pin description p0.0 to p0.7 28, 1 to 7 port 0: 8 quasi-bidirectional i/o lines t1 8 test 1 or count input of 8-bit timer/event counter 1 xtal1 9 crystal oscillator or external clock input xtal2 10 crystal oscillator output reset 11 reset input ce/ t0 12 chip enable or test 0 p1.0 to p1.6 13 to 19 port 1: 7 quasi-bidirectional i/o lines p1.7/rco 20 port 1: 1 quasi-bidirectional i/o line/real clock output 16 khz rtc1 21 rtc 32 khz oscillator input v ss 22 ground rtc2 23 rtc 32 khz oscillator output v dd 24 positive supply voltage emun 25 emulation pin, must be connected to v dd for normal mode operation. clk1 26 count input of 16-bit peripheral counter 1 clk2 27 count input of 16-bit peripheral counter 2 symbol pin description n.c. 1, 13, 17, 28 not connected t1 5 test 1 or count input of 8-bit timer/event counter 1 xtal1 6 crystal oscillator or external clock input xtal2 7 crystal oscillator output reset 8 reset input ce/ t0 9 chip enable or test 0 p1.0 to p1.6 10 to 12, 14 to 16, 18 port 1: 7 quasi-bidirectional i/o lines p1.7/rco 19 port 1: 1 quasi-bidirectional i/o line/real clock output 16 khz rtc1 20 rtc 32 khz oscillator input v ss 21 ground rtc2 22 rtc 32 khz oscillator output v dd 23 positive supply voltage emun 24 emulation pin, must be connected to v dd for normal mode operation. clk1 25 count input of 16-bit peripheral counter 1 clk2 26 count input of 16-bit peripheral counter 2 p0.0 to p0.7 27, 29 to 32, 2to4 port 0: 8 quasi-bidirectional i/o lines
1999 feb 02 7 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 6 real-time clock (rtc) 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 w ) connected between the rtc1 and rtc2 pins. the oscillator is controlled by the run bit in the clock control register. 6.2 divider chain 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. 6.3 frequency adjustment 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: 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. minute interrupt time (mit) 60 2 14 frco ---------------- - far 2 14 ----------- - + =
1999 feb 02 8 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader .this text is here in _ white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader.this text is here in this text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the acrobat reader. white to force land scape pages to be ... handbook, full pagewidth mbh919 compare logic far div512 div2 rtc2 rtc2 run 32 khz div32/div48 div60 60 s 1.0 s 1.5 s interrupt select register reset internal bus compare bit erco tst1 tst2 sits run its cif eci clcr rtci p1.7/rco fig.4 rtc block diagram.
1999 feb 02 9 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 6.4 clock control register (clcr) table 3 clock control register (address 20h) table 4 description of clcr bits 6.5 frequency adjustment register (far) table 5 frequency adjustment register (address 21h) table 6 description of far bits 76543210 sits tst2 tst1 erco run its cif eci bit symbol description 7 sits second interrupt time select. if sits = 1 and its = 1, then the interrupt time is 1.5 seconds. 6 tst2 test 2 input. this is a test bit and must be ?xed at zero by user software. 5 tst1 test 1 input. this is a test bit and must be ?xed at zero by user software. 4 erco 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. 3 run 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. 2 its 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. 1 cif clock interrupt flag. set by hardware, if rtc divider chain over?ows (every second, 1.5 second or minute depending on its) or by software. reset: by software. 0 eci enable clock interrupt. if eci = 0, the rtc interrupt is disabled. if eci = 1, the rtc interrupt is enabled. 76543210 far7 far6 far5 far4 far3 far2 far1 far0 bit symbol description 7 far7 the state of these 8-bits determine the frequency adjustment value for the real-time clock section; see table 7. 6 far6 5 far5 4 far4 3 far3 2 far2 1 far1 0 far0
1999 feb 02 10 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a table 7 selection of frco far (hex) frco 00 16384.000 01 16384.018 02 16384.033 03 16384.051 04 16384.066 05 16384.084 06 16384.100 07 16384.117 08 16384.135 09 16384.150 0a 16384.168 0b 16384.184 0c 16384.201 0d 16384.217 0e 16384.234 0f 16384.250 10 16384.268 11 16384.283 12 16384.301 13 16384.316 14 16384.334 15 16384.350 16 16384.367 17 16384.385 18 16384.400 19 16384.418 1a 16384.434 1b 16384.451 1c 16384.467 1d 16384.484 1e 16384.500 1f 16384.518 20 16384.533 21 16384.551 22 16384.566 23 16384.584 24 16384.600 25 16384.617 26 16384.635 27 16384.650 28 16384.668 29 16384.684 2a 16384.701 2b 16384.717 2c 16384.734 2d 16384.750 2e 16384.768 2f 16384.783 30 16384.801 31 16384.816 32 16384.834 33 16384.850 34 16384.867 35 16384.885 36 16384.900 37 16384.918 38 16384.934 39 16384.951 3a 16384.967 3b 16384.984 3c 16385.000 3d 16385.018 3e 16385.033 3f 16385.051 40 16385.066 41 16385.084 42 16385.100 43 16385.117 far (hex) frco
1999 feb 02 11 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 44 16385.135 45 16385.150 46 16385.168 47 16385.184 48 16385.201 49 16385.217 4a 16385.234 4b 16385.250 4c 16385.268 4d 16385.283 4e 16385.301 4f 16385.316 50 16385.334 51 16385.350 52 16385.367 53 16385.385 54 16385.400 55 16385.418 56 16385.434 57 16385.451 58 16385.467 59 16385.484 5a 16385.500 5b 16385.518 5c 16385.533 5d 16385.551 5e 16385.566 5f 16385.584 60 16385.600 61 16385.617 62 16385.635 63 16385.650 64 16385.668 65 16385.684 far (hex) frco 66 16385.701 67 16385.717 68 16385.734 69 16385.750 6a 16385.768 6b 16385.783 6c 16385.801 6d 16385.816 6e 16385.834 6f 16385.850 70 16385.867 71 16385.885 72 16385.900 73 16385.918 74 16385.934 75 16385.951 76 16385.967 77 16385.984 78 16386.000 79 16386.018 7a 16386.033 7b 16386.051 7c 16386.066 7d 16386.084 7e 16386.100 7f 16386.117 80 16386.135 81 16386.150 82 16386.168 83 16386.184 84 16386.201 85 16386.217 86 16386.234 87 16386.250 far (hex) frco
1999 feb 02 12 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 88 16386.268 89 16386.283 8a 16386.301 8b 16386.316 8c 16386.334 8d 16386.350 8e 16386.367 8f 16386.385 90 16386.400 91 16386.418 92 16386.434 93 16386.451 94 16386.467 95 16386.484 96 16386.500 97 16386.518 98 16386.533 99 16386.551 9a 16386.566 9b 16386.584 9c 16386.600 9d 16386.617 9e 16386.635 9f 16386.650 a0 16386.668 a1 16386.684 a2 16386.701 a3 16386.717 a4 16386.734 a5 16386.750 far (hex) frco a6 16386.768 a7 16386.783 a8 16386.801 a9 16386.816 aa 16386.834 ab 16386.850 ac 16386.867 ad 16386.885 ae 16386.900 af 16386.918 b0 16386.934 b1 16386.951 b2 16386.967 b3 16386.984 b4 16387.000 b5 16387.018 b6 16387.033 b7 16387.051 b8 16387.066 b9 16387.084 ba 16387.100 bb 16387.117 bc 16387.135 bd 16387.150 be 16387.168 bf 16387.184 c0 16387.201 c1 16387.217 c2 16387.234 c3 16387.250 far (hex) frco
1999 feb 02 13 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a c4 16387.268 c5 16387.283 c6 16387.301 c7 16387.316 c8 16387.334 c9 16387.350 ca 16387.367 cb 16387.385 cc 16387.400 cd 16387.418 ce 16387.434 cf 16387.451 d0 16387.467 d1 16387.484 d2 16387.500 d3 16387.518 d4 16387.533 d5 16387.551 d6 16387.566 d7 16387.584 d8 16387.600 d9 16387.617 da 16387.635 db 16387.650 dc 16387.668 dd 16387.684 de 16387.701 df 16387.717 e0 16387.734 e1 16387.750 far (hex) frco e2 16387.768 e3 16387.783 e4 16387.801 e5 16387.816 e6 16387.834 e7 16387.850 e8 16387.867 e9 16387.885 ea 16387.900 eb 16387.918 ec 16387.934 ed 16387.951 ee 16387.967 ef 16387.984 f0 16388.002 f1 16388.018 f2 16388.035 f3 16388.051 f4 16388.068 f5 16388.084 f6 16388.102 f7 16388.117 f8 16388.135 f9 16388.152 fa 16388.168 fb 16388.186 fc 16388.201 fd 16388.219 fe 16388.234 ff 16384.000 far (hex) frco
1999 feb 02 14 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 7 peripheral counter 1 and counter 2 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 2 16 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. 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/f xtal + 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! 7.1 peripheral counter control register (pccr) table 8 peripheral counter control register (address 40h) table 9 description of pccr bits 76543210 ec1 ec1i 0 c1f ec2 ec2i 0 c2f bit symbol description 7 ec1 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. 6 ec1i 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. 5 0 not used 4 c1f counter 1 interrupt flag. if c1f = 1, then a counter over?ow has occurred in counter 1. set by hardware and software; reset by software. 3 ec2 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. 2 ec2i 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. 1 0 not used 0 c2f counter 2 interrupt flag. if c2f = 1, then a counter over?ow has occurred in counter 2. set by hardware and software; reset by software.
1999 feb 02 15 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a handbook, full pagewidth 8-bit internal bus 8-bit internal bus peripheral counter control register c1: 16-bit counter c2: 16-bit counter ec1 ec1i c1f clk1 clk2 ce/t0 c2f interrupt logic cpu interrupt rtc,timer and external interrupts counter interrupts rtc pcd3745a timer ec2 ec2i 0 0 timer overflow timer overflow 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 16 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a fig.6 simplified interrupt logic schematic (the r input overrules the s input for all flags). t2f handbook, full pagewidth mbh912 digital filter / latch ei enable sq r q clear eif reset clear sq r eif ti enable sq r q sq r tif iip sq r q interrupt vector logic retr reset clear tif dis i ce / t0 rtc1 c1f c2f en i dis i reset timer overflow en tcnt i dis tcnt i reset call ei / clear eif call si call ti / clear tif
1999 feb 02 17 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 9 reduced power modes 9.1 idle mode 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). 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. 13 summary of configurations table 10 port con?guration (see notes 1 and 2) notes 1. 1 = standard i/o; 3 = push-pull output. 2. port state after reset: s = set (high) and r = reset (low). table 11 product con?gurations type port 0 port 1 0123456701234567 pcd3745a 3r 3r 3s 3s 3r 3r 3r 3r 1s 1s 1s 1s 1r 1r 1r 1s feature description program/data code any mix of instructions and data up to otp memory size of 4.5 kbytes oscillator transconductance ?xed at low transconductance (g ml ); the maximum crystal clock frequency is 6 mhz
1999 feb 02 18 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 14 otp programming 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 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 device philips type number ceibo type number supported package ceibo mp-51 om4260 mp-51 programmer base - pcd3745a om5007 adapter dip dip28 om5030 adapter so so28 om5037; note 1 socket converter lqfp32 lqfp32 address (hex) register 76543210 00 to 1f not used -------- 20 clock control register (clcr) sits tst2 tst1 erco run its cif eci 21 frequency adjustment register (far) far7 far6 far5 far4 far3 far2 far1 far0 22 to 3f not used -------- 40 peripheral counter control register (pccr) ec1 ec1i 0 c1f ec2 ec2i 0 c2f 41 counter 1 low byte (c1lb) c1lb7 c1lb6 c1lb5 c1lb4 c1lb3 c1lb2 c1lb1 c1lb0 42 counter 1 high byte (c1hb) c1hb7 c1hb6 c1hb5 c1hb4 c1hb3 c1hb2 c1hb1 c1hb0 43 counter 2 low byte (c2lb) c2lb7 c2lb6 c2lb5 c2lb4 c2lb3 c2lb2 c2lb1 c2lb0 44 counter 2 high byte (c2hb) c2hb c2hb c2hb c2hb c2hb c2hb c2hb c2hb 45 to ff not used --------
1999 feb 02 19 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 16 limiting values in accordance with the absolute maximum rating system (iec 134); see notes 1 and 2. notes 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 v ss 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 v dd = 1.8 to 6 v; v ss =0v; t amb = - 25 to +70 c; f xtal = 3.58 mhz; f rtc = 32768 hz; all voltages with respect to v ss unless otherwise speci?ed. symbol parameter min. max. unit v dd supply voltage - 0.8 +7.0 v v i all input voltages - 0.5 v dd + 0.5 v i i, i o dc input or output current - 10 +10 ma p tot total power dissipation - 125 mw p o power dissipation per output - 30 mw i ss ground supply current - 50 +50 ma t stg storage temperature - 65 +150 c t j operating junction temperature - 90 c symbol parameter conditions min. typ. max. unit supply (see figs 8, 9, 10 , 11 , 12 and 13) v dd supply voltage operating 1.8 - 6v ram data retention in stop mode 1.0 - 6v i dd operating supply current v dd = 3 v; note 1 - 0.35 0.7 ma i dd(id) supply current idle mode v dd = 3 v; note 1 - 0.25 0.5 ma i dd(stp) supply current stop mode t amb =25 c; counters and rtc not running; notes 1 and 2 - 1.0 5.0 m a t amb = - 25 to +70 c; counters and rtc not running; notes 1 and 2 -- 10 m a t amb =25 c; counters and rtc running at 33 khz; notes 1 and 2 - 3.0 6.0 m a inputs v il low-level input voltage 0 - 0.3v dd v v ih high-level input voltage 0.7v dd - v dd v i li input leakage current v ss v i v dd - 1 - +1 m a
1999 feb 02 20 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a notes 1. v il =v ss ; v ih =v dd ; 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. v dd = 1.8 v; reset, t1 and ce/ t0 at v ss . 3. for proper operation of the counters the count pulse width (t w ), 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/f xtal + 500 ns. 4. verified on sample bases. not tested during production. port outputs (see figs 14, 15 and 16) i ol low-level port sink current v dd = 3 v; v o = 0.4 v 0.7 3.5 - ma i oh high-level port pull-up source current v dd =3v; v o = 2.7 v - 10 - 30 -m a v dd =3v; v o =0v -- 140 - 300 m a i oh high-level port push-pull source current v dd = 3 v; v o = 2.6 v - 0.7 - 3.5 - ma real-time clock 32 khz oscillator g m transconductance v i(p-p) < 50 mv 2 10 50 m s d f/f frequency adjustment - 0.6 - +0.6 ppm c i(rtc1) rtc1 pin input capacitance - 10 - pf c o(rtc2) rtc2 pin output capacitance - 10 - pf clock inputs of peripheral counters (clk1 and clk2) v th(lh) positive-going threshold voltage v dd =5v; t amb = + 25 c; see fig.7 - 0.6v dd - v v th(hl) negative-going threshold voltage v dd =5v; t amb = + 25 c; see fig.7 - 0.4v dd - v t w pulse width notes 3 and 4; see fig.7 500 -- ns f c count frequency note 4 0 - 1 mhz xtal oscillator g ml low transconductance v dd = 5 v; see fig.18 0.2 0.4 1.0 ma/v r f feedback resistor 0.3 1.0 3.0 m w symbol parameter conditions min. typ. max. unit
1999 feb 02 21 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a fig.7 definition of count pulse width (t w ). mbh913 0.6v dd 0.4v dd 0.4v dd 0.6v dd t w clk1 clk2 or clk1 clk2 fig.8 typical supply current (i dd ) in stop mode as a function of supply voltage (v dd ). handbook, halfpage 1 6 4 2 (1) (2) 0 3 1.5 3.35 5 v dd (v) 7 mgb784 i dd(stp) ( m a) (1) rtc stopped; - 25 to 70 c. (2) rtc running; - 25 to 70 c. fig.9 typical supply current (i dd(stp) ) in stop mode as a function of counter frequency, both counters running in parallel. (v dd =3v; t amb = + 25 c), handbook, halfpage 50 0 10 3 mbh914 10 4 10 f c (hz) i dd(stp) ( m a) 5 10 6 10 20 30 40 fig.10 typical operating supply current (i dd ) as a function of supply voltage (v dd ). measured with crystal between xtal1 and xtal2. handbook, halfpage 1 6 4 2 0 35 v dd (v) 7 mbh915 3.58 mhz i dd (ma)
1999 feb 02 22 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a fig.11 typical operating supply current (i dd ) as a function of clock frequency (f xtal ). measured with function generator on xtal1. handbook, halfpage 6 0 2 2 4 1 mbg645 10 10 f xtal (mhz) 5 v i dd (ma) 3 v fig.12 typical supply current (i dd(id) ) in idle mode as a function of supply voltage (v dd ). measured with crystal between xtal1 and xtal2. handbook, halfpage 1 6 4 2 0 357 mbh916 v dd (v) 3.58 mhz i dd(id) (ma) fig.13 typical supply current (i dd(id) ) in idle mode as a function of clock frequency (f xtal ). measured with function generator on xtal1. handbook, halfpage 6 0 2 2 4 1 mbh918 10 10 i dd(id) (ma) f xtal (mhz) 5 v 3 v fig.14 typical low level port output sink current (i ol ) as a function of supply voltage (v dd ). v o = 0.4 v. handbook, halfpage 1 6 4 2 0 35 v dd (v) 7 mbh917 i ol (ma)
1999 feb 02 23 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a handbook, halfpage 1 - 300 - 200 - 100 0 3 i oh ( m a) 5 v dd (v) 7 mlc422 v o = 0 v v o = 0.9 v dd fig.15 typical high level output pull-up source current (i oh ) as a function of supply voltage (v dd ). handbook, halfpage 1 - 12 - 8 - 4 0 35 v dd (v) 7 mlc410 i oh (ma) fig.16 typical high level push-pull output source current (i oh ) as a function of supply voltage (v dd ). v o =v dd - 0.4 v.
1999 feb 02 24 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 19 ac characteristics v dd = 1.8 to 6 v; v ss =0v; t amb = - 25 to +70 c; all voltages with respect to v ss unless otherwise speci?ed. symbol parameter conditions min. typ. max. unit t r rise time all outputs v dd =5v; t amb =25 c; c l =50pf - 30 - ns t f fall time all outputs - 30 - ns f xtal clock frequency see fig.17 1 - 16 mhz fig.17 maximum clock frequency (f xtal ) as a function of supply voltage (v dd ). handbook, halfpage mla493 v dd (v) 13 5 7 f xtal (mhz) 12 9 6 3 0 15 18 guaranteed operating range
1999 feb 02 25 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a fig.18 typical transconductance of xtal oscillator as a function of supply voltage (v dd ). handbook, halfpage 135 v dd (v) 7 10 1 mbg644 1 10 g ml g m (ms) fig.19 typical rtc oscillator transconductance as a function of supply voltage (v dd ). handbook, halfpage 1 - 18 -14 -10 6 35 v dd (v) 7 mgb791 g m ( m s) t amb = - 25 o c + 25 o c + 70 o c
1999 feb 02 26 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 20 package outlines unit a max. 1 2 b 1 (1) (1) (1) cd e w em h l references outline version european projection issue date iec jedec eiaj mm inches dimensions (inch dimensions are derived from the original mm dimensions) sot117-1 92-11-17 95-01-14 a min. a max. b z max. m e e 1 1.7 1.3 0.53 0.38 0.32 0.23 36.0 35.0 14.1 13.7 3.9 3.4 0.25 2.54 15.24 15.80 15.24 17.15 15.90 1.7 5.1 0.51 4.0 0.066 0.051 0.020 0.014 0.013 0.009 1.41 1.34 0.56 0.54 0.15 0.13 0.01 0.10 0.60 0.62 0.60 0.68 0.63 0.067 0.20 0.020 0.16 051g05 mo-015ah m h c (e ) 1 m e a l seating plane a 1 w m b 1 e d a 2 z 28 1 15 14 b e pin 1 index 0 5 10 mm scale note 1. plastic or metal protrusions of 0.25 mm maximum per side are not included. handbook, full pagewidth dip28: plastic dual in-line package; 28 leads (600 mil) sot117-1
1999 feb 02 27 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a unit a max. a 1 a 2 a 3 b p cd (1) e (1) (1) eh e ll p q z y w v q references outline version european projection issue date iec jedec eiaj mm inches 2.65 0.30 0.10 2.45 2.25 0.49 0.36 0.32 0.23 18.1 17.7 7.6 7.4 1.27 10.65 10.00 1.1 1.0 0.9 0.4 8 0 o o 0.25 0.1 dimensions (inch dimensions are derived from the original mm dimensions) note 1. plastic or metal protrusions of 0.15 mm maximum per side are not included. 1.1 0.4 sot136-1 x 14 28 w m q a a 1 a 2 b p d h e l p q detail x e z c l v m a e 15 1 (a ) 3 a y 0.25 075e06 ms-013ae pin 1 index 0.10 0.012 0.004 0.096 0.089 0.019 0.014 0.013 0.009 0.71 0.69 0.30 0.29 0.050 1.4 0.055 0.419 0.394 0.043 0.039 0.035 0.016 0.01 0.25 0.01 0.004 0.043 0.016 0.01 0 5 10 mm scale so28: plastic small outline package; 28 leads; body width 7.5 mm sot136-1 95-01-24 97-05-22
1999 feb 02 28 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a unit a max. a 1 a 2 a 3 b p ce (1) eh e ll p z y w v q references outline version european projection issue date iec jedec eiaj mm 1.60 0.20 0.05 1.45 1.35 0.25 0.4 0.3 0.18 0.12 7.1 6.9 0.8 9.15 8.85 0.9 0.5 7 0 o o 0.25 0.1 1.0 0.2 dimensions (mm are the original dimensions) note 1. plastic or metal protrusions of 0.25 mm maximum per side are not included. 0.75 0.45 sot358 -1 95-12-19 97-08-04 d (1) (1) (1) 7.1 6.9 h d 9.15 8.85 e z 0.9 0.5 d b p e q e a 1 a l p detail x l (a ) 3 b 8 c d h b p e h a 2 v m b d z d a z e e v m a x 1 32 25 24 17 16 9 y pin 1 index w m w m 0 2.5 5 mm scale lqfp32: plastic low profile quad flat package; 32 leads; body 7 x 7 x 1.4 mm sot358-1
1999 feb 02 29 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 21 soldering 21.1 introduction 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 through-hole mount packages 21.2.1 s oldering by dipping or by solder wave 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 (t stg(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 m anual 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 surface mount packages 21.3.1 r eflow 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. 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 w ave soldering 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): C 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; C 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 m anual soldering 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.
1999 feb 02 30 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a 21.4 suitability of ic packages for wave, re?ow and dipping soldering methods 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 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. mounting package soldering method wave reflow (1) dipping through-hole mount dbs, dip, hdip, sdip, sil suitable (2) - suitable surface mount bga, sqfp not suitable suitable - hlqfp, hsqfp, hsop, htssop, sms not suitable (3) suitable - plcc (4) , so, soj suitable suitable - lqfp, qfp, tqfp not recommended (4)(5) suitable - ssop, tssop, vso not recommended (6) suitable - data sheet status objective speci?cation this data sheet contains target or goal speci?cations for product development. preliminary speci?cation this data sheet contains preliminary data; supplementary data may be published later. product speci?cation this data sheet contains ?nal product speci?cations. 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 speci?cation 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 speci?cation.
1999 feb 02 31 philips semiconductors product speci?cation 8-bit microcontroller with 4.5 kbytes otp memory and 32 khz real-time clock pcd3745a notes
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philips semiconductors, piazza iv novembre 3, 20124 milano, tel. +39 2 6752 2531, fax. +39 2 6752 2557 japan: philips bldg 13-37, kohnan 2-chome, minato-ku, tokyo 108-8507, tel. +81 3 3740 5130, fax. +81 3 3740 5077 korea: philips house, 260-199 itaewon-dong, yongsan-ku, seoul, tel. +82 2 709 1412, fax. +82 2 709 1415 malaysia: no. 76 jalan universiti, 46200 petaling jaya, selangor, tel. +60 3 750 5214, fax. +60 3 757 4880 mexico: 5900 gateway east, suite 200, el paso, texas 79905, tel. +9-5 800 234 7381, fax +9-5 800 943 0087 printed in the netherlands 275002/00/02/pp32 date of release: 1999 feb 02 document order number: 9397 750 05153

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