st ST20P16 16k 8-bit single chip microcontroller notice: sitronix technology corp. reserves the righ t to change the contents in this document without p rior notice. this is not a final specification. some parameters are subject to change. ver 1.5 1 / 10 6/13/07 1 1 . . f f e e a a t t u u r r e e s s 8-bit static pipeline cpu rom: 16k x 8 bits ram: 192 x 8 bits operation voltage : 2.4v ~3.6v 24 cmos bi-directional bit programmable i/o pins - twenty (port-a high nibble & port-b/c) are shared with lcd drives 6 output pins (four are shared with lcd common and two are shared with psg) 2 input pins (code option: shared with oscx) hardware debounce option for input port bit programmable pull-up for input port timer/counter : - one 8-bit timer / 16-bit event counter - one 8-bit base timer five powerful interrupt sources : - external interrupt (edge trigger) - timer1 interrupt - base timer interrupt - porta[7~0] interrupt (transition trigger) - dac reload interrupt 32-level deep stack dual clock source : - oscx: crystal oscillator: 32768hz - osc: rc oscillator 500k ~ 4m hz cpu clock 250k ~ 2m hz build-in oscillator with warm-up timer lcd controller driver: - 16 level contrast control - 320 ( 8x40) dots ( 1/8 duty, 1/4 bias, programma ble) - 160 ( 4x40) dots ( 1/4 duty, 1/3 bias, programma ble) - two clock source options: rc and resonator oscil lator - keyboard scan function supported on 20 shared se gment drives - internal bias resistors(1/4 bias & 1/3 bias) wit h 32 level driving strength control programmable sound generator (psg) includes : - tone generator - sound effect generator - 16 level volume control - digital dac for speech / tone three power down modes : - wai0 mode - wai1 mode - stp mode 2 2 . . g g e e n n e e r r a a l l d d e e s s c c r r i i p p t t i i o o n n ST20P16 is a low-cost, high-performance, fully stat ic, 8-bit microcontroller designed with cmos silicon gate tec hnology. it comes with 8-bit pipeline cpu core, sram, timer, lc d driver, i/o port, psg and mask program rom. a build-in dual oscillator is specially integrated to enhance chip performance . for business equipment and consumer applications. such as watch, calculator, and lcd game , ST20P16 is definitely a perfect sol ution for implementation.
ST20P16 ver 1.5 2/10 6/13/07 3 3 . . b b l l o o c c k k d d i i a a g g r r a a m m
ST20P16 ver 1.5 3/10 6/13/07 4 4 . . p p a a d d d d i i a a g g r r a a m m com6 com5 com4 com3 com7 reset osci vdd psgob psgo oscxi/pd0 gnd oscxo/pd1 com1 pb3/seg35 pb4/seg36 pb5/seg37 pb6/seg38 pb7/seg39 com0 pb2/seg34 pb0/seg32 pb1/seg33 pc3/seg27 pc4/seg28 pc5/seg29 pc6/seg30 pc7/seg31 pc2/seg26 seg20 seg21 seg22 seg23 seg19 seg13 seg14 seg15 seg16 seg17 seg12 seg18 pc0/seg24 pc1/seg25 seg11 seg5 seg6 seg7 seg8 seg9 seg10 seg4 pa2 pa3 pa4/seg0 pa5/seg1 pa6/seg2 pa1 pa7/seg3 pa0/intx 33 53 52 51 50 49 48 47 45 46 44 43 42 41 40 39 38 37 36 35 34 30 29 28 27 26 25 24 23 22 21 32 31 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 62 59 58 57 56 55 54 ST20P16 19 18 17 66 65 64 63 61 60 67 68 20 pe3 pe2 nc nc pwrt nc vpp com2 nc
ST20P16 ver 1.5 4/10 6/13/07 5 5 . . p p a a d d d d e e s s c c r r i i p p t t i i o o n n pin no. designation type description 12~9 seg0/pa4 ~ seg3/pa7 o i/o lcd segment output port-a bit programmable i/o 8 ~ 1 68 ~ 57 seg4 ~ seg23 o lcd segment output 56~49 seg24/pc0 ~ seg31/pc7 o i/o lcd segment output port-c bit programmable i/o 48~41 seg32/pb0 ~ seg39/pb7 o i/o lcd segment output port-b bit programmable i/o 39~36 com 0 C 3 o lcd common output 35~32 com 4 - 7 o o lcd common output output port 24 reset i pad reset input (high active) 29 gnd p ground input and chip substrate 16 pa0/intx i/o i i i port-a bit programmable i/o edge-trigger interrupt. transition-trigger interrupt programmable timer1 clock source 15~9 pa 1-7 i/o i port-a bit programmable i/o transition-trigger interrupt 28~27 psgo,psgob o psg/dac output 26 vdd p power supply 22 oscxi/pd0 i i osc input pin. for 32768hz crystal port-d input 21 oscxo/pd1 o i osc output pin. for 32768hz crystal port-d input 25 osci i osc input pin. toward to external resistor 17~18 pe2~pe3 p otp programming power 19,20,31,40 nc - - 23 vpp p otp programming power 30 pwrt i power on timer control pin. suggest tie to gnd to disable legend: i = input, o = output, i/o = input/outp ut, p = power.
ST20P16 ver 1.5 5/10 6/13/07 6 6 . . a a p p p p l l i i c c a a t t i i o o n n c c i i r r c c u u i i t t s s 6.1 application circuit under 3v operating voltage vdd : 3v clock : 32768hz crystal and 4.0mhz rc o scillator lcd : 1/8 duty i/o : port a alarm : psgo, psgob figure 6-1: application circuit without lcd keybo ard awaking pulse note: the functions of pwrt have been added in the st20p18. when st20p18 is used as ST20P16,please con nect to gnd.
ST20P16 ver 1.5 6/10 6/13/07 vdd : 3v clock : 32768hz crystal and 4.0mhz rc o scillator lcd : 1/8 duty i/o : port a alarm : psg0, psg1 25pf figure 6-2: application circuit with lcd keyboard awaking pulse note: 1. coms and segs output gnd level, while the lcd is tu rned off. 2. if lcd is turned off, keyboard awaking pulses must be turned off at the same time. 3. connect one capacitor of 100pf to osci stabilize os cillation frequency. this capacitor must be placed close to osci. 4.the functions of pwrt have been added in the st20 p18. when st20p18 is used as ST20P16,please connect to gnd.
ST20P16 ver 1.5 7/10 6/13/07 7 7 . . o o t t p p r r o o m m p p r r o o g g r r a a m m m m i i n n g g i i n n t t e e r r f f a a c c e e 7.1 interface description in order to program otp rom, several pins have to b e reserved on the pcb which is bounding with st20p18. these total are 8 pins that include following list table 7-1: . it just be used to connect writer to program otp rom. after programming and disconnecting from writer, they can be used as orig inal purpose. table 7-1: pin assignment of interface ST20P16 pad name (spi interface) pin type description vpp vpp power high voltage power supply 1) otp program, program verify, vpp=> 12v 2) otp read:vpp=> floating gnd vss power ground. vcc vdd power low voltage (2.4v-5.4v) power supply. pe3 ssb input spi signal seg4 mosi input spi signal seg5 miso output spi signal pe2 sck input spi signal reset reset input spi reset 7.2 programming function specification there are reserved 5 option bits to select to apply or not the function we needed. it includes pd input and code p rotection. to setup the options should program the otp rom by otp writer . table 7-2: option ward note :watchdog timer (wdt) circuit has been added i n the st20p18. when st20p18 is used as ST20P16, the option bits of wdten and wdtstp have to be programmed to 0 .(otp firmware option select ) bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 def ault cp - - - wdtstp wdten - pd 1--- 00-1 bit 7: cp : otp rom code protect. 0 =protect otp data. 1 =un-protect otp data. bit 3: wdtstp : wdt stop control bit. 0 = wdt stop at wai-1 and stp mode. bit 2: wdten : wdt enable. 0 = wdt disable. bit 0: pd : port function selection 0 = pd used as input port. 1 = osc input pin for 32768hz crystal.
ST20P16 ver 1.5 8/10 6/13/07 8 8 . . p p a a c c k k a a g g e e i i n n f f o o r r m m a a t t i i o o n n dimensions in millimeters 80l millimeter symbol min. nom. max. b 0.30 0.35 0.45 e 0.80 bsc. d2 18.4 ref e2 12.0 ref tolereance of form and position aaa 0.25 bbb 0.20 ccc 0.20
ST20P16 ver 1.5 9/10 6/13/07 9 9 . . p p i i n n c c o o n n f f i i g g u u r r a a t t i i o o n n ( ( q q f f p p 8 8 0 0 ) ) 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 seg11 nc nc seg10 seg 9 seg 8 seg 7 seg 6 seg 5 seg 4 pa7/seg 3 pa6/seg 2 pa5/seg 1 pa4/seg 0 pa3 pa2 pa1 pa0/intx pe3 pe2 nc nc o s c xo / p d 1 nc nc o s c x i / p d 0 v pp r e s et o s c i vd d ps go b ps go gn d p w r t n c c o m 7 c o m 6 c o m 5 c o m 4 c o m 3 com2 com1 com0 nc pb7/seg39 pb6/seg38 pb5/seg37 pb4/seg36 p c 1 / s e g 25 p c 0 / s e g 24 s e g 23 s e g 22 s e g 21 s e g 20 s e g 19 s e g 18 s e g 17 s e g 16 s e g 15 s e g 14 s e g 13 s e g 12 n c n c nc nc pb3/seg35 pb2/seg34 pb1/seg33 pb0/seg32 pc7/seg31 pc6/seg30 pc5/seg29 pc4/seg28 pc3/seg27 pc2/seg26 nc nc nc nc
ST20P16 the above information is the exclusive intellectual property of sitronix technology corp. and shall no t be disclosed, distributed or reproduced without permission from sitronix. sitro nix technology corp. reserves the right to change t his document without prior notice and makes no warranty for any errors which may appe ar in this document. sitronix products are not int ended for use in life support, critical care, medical, safety equipment, or simila r applications where products failure could result in injury, or loss of life, or personal or physical harm, or any military or defense applicati on, or any governmental procurement to which specia l terms or provisions may apply. ver 1.5 10/10 6/13/07 r r e e v v i i s s i i o o n n s s version page description date 1.3 7,8 modify ros c 180k ohm to 226k ohm under 4mhz condition200 6/3/1 1.4 1 add cpu clock 250k ~ 2m hz 2006/6/23 1.5 8,9 move packag e information to page8,9 ..2006/8/8
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