data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 1 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| features ? the PT8A971AP works as the encoder and the pt8a972ap works as the decoder five pins for five control functions operating power supply voltage: 2.5 to 5.0v auto-power-off if no press on any button in 8s or continuously press on any button over 4 minutes (971ap) press on any button to wake up manual-power-off with off button (971ap) one output pin used for external power control on-chip oscillator with an external resistor low operating current few external components needed package: 14-pin dip (971ap) and 16-pin dip (972ap) general description the PT8A971AP and pt8a972ap is a pair of cmos block diagram block diagram of PT8A971AP lsis designed to provide a complete control functions to remote-controlled toy. the PT8A971AP has five input pins corresponding with the five function buttons - forward, backward, right, left and turbo. the encoding circuit in the PT8A971AP sends digital codes to the two output pins so and sc. the digital codes correspond to the definite function buttons and their combinations. the so and sc outputs are used in wireless and infrared applications respectively. there is an internal oscillator in the PT8A971AP and pt8a972ap respectively. the oscillator frequency can be adjusted by the external resistor. the relative error between the frequencies of the two on-chip oscillators in the PT8A971AP and pt8a972ap must be less than 25%. the auto-power-off function is achieved by internal counters. pressing off button can also shut down the power supply. press on any function button will wake up the chip promptly. off osci osco right left turbo backward oscillator input circuit timing generator encoding circuit 4 minutes counter output circuit pc so sc forward
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 2 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| block diagram of pt8a972ap pin configuration top view 1 2 3 4 5 6 7 14 13 12 11 10 9 8 off backward gnd forward nc turbo sc right left osci osco pc v cc so PT8A971AP 14-pin pdip top view vi2 vo2 si osci osco pc on/off right gnd vo1 vi1 v cc turbo forward backward left pt8a972ap 16-pin pdip 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 osci osco right turbo forward backward oscillator timing generator decoding circuit 5 minutes counter latch pc on/off output circuit power control sig. sample & fault-tolerant check amp. amp. amp. si vi1 vi2 vo1 vo2 left
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 3 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| pin description pin description of PT8A971AP n i pn i p n i p n i pn i pe m a ne m a n e m a n e m a ne m a ne p y te p y t e p y t e p y te p y tn o i t p i r c s e dn o i t p i r c s e d n o i t p i r c s e d n o i t p i r c s e dn o i t p i r c s e d 1f f o i . w o l n e h w a 1 7 9 a 8 t p e h t o t y l p p u s r e w o p l a n r e t x e f f o s t u c 2 d r a w k c a bi . r o t s i s e r p u - l l u p h t i w , d n g o t d e t c e n n o c n i p s i h t f i d e t c e l e s n o i t c n u f d r a w k c a b 3 d n gd n g d n u o r g 4 d r a w r o fi . r o t s i s e r p u - l l u p h t i w , d n g o t d e t c e n n o c n i p s i h t f i d e t c e l e s n o i t c n u f d r a w r o f 5 c n n o i t c e n n o c o n 6 o b r u ti . r o t s i s e r p u - l l u p h t i w , d n g o t d e t c e n n o c n i p s i h t f i d e t c e l e s n o i t c n u f o b r u t 7 c so y c n e u q e r f r e i r r a c h t i w l a n g i s g n i d o c n e e h t f o n i p t u p t u o 8 o so y c n e u q e r f r e i r r a c t u o h t i w l a n g i s g n i d o c n e e h t f o n i p t u p t u o 9 v c c p y l p p u s r e w o p 0 1 c po n i p t u p t u o l o r t n o c r e w o p 1 1 o c s oo n i p t u p t u o r o t a l l i c s o 2 1 i c s oi n i p t u p n i r o t a l l i c s o 3 1 t f e li . r o t s i s e r p u - l l u p h t i w , d n g o t d e t c e n n o c n i p s i h t f i d e t c e l e s n o i t c n u f d r a w t f e l 4 1 t h g i ri . r o t s i s e r p u - l l u p h t i w , d n g o t d e t c e n n o c n i p s i h t f i d e t c e l e s n o i t c n u f d r a w t h g i r o n n i po n n i p o n n i p o n n i po n n i pe m a n n i pe m a n n i p e m a n n i p e m a n n i pe m a n n i pe p y te p y t e p y t e p y te p y tn o i t p i r c s e dn o i t p i r c s e d n o i t p i r c s e d n o i t p i r c s e dn o i t p i r c s e d 4 1 , 11 i v , 2 i vi 2 d n a 1 s r e i f i l p m a f o s n i p t u p n i 5 1 , 21 o v , 2 o vo 2 d n a 1 s r e i f i l p m a f o s n i p t u p t u o 3i si l a n g i s d e d o c n e r o f n i p t u p n i 4i c s oi n i p t u p n i r o t a l l i c s o 5o c s oo n i p t u p t u o r o t a l l i c s o 6c po n i p t u p t u o l o r t n o c r e w o p 7f f o / n oin i p f f o / n o 8t h g i ro n i p t u p t u o t h g i r 9t f e lo n i p t u p t u o t f e l 0 1d r a w k c a bo n i p t u p t u o d r a w k c a b 1 1d r a w r o fo n i p t u p t u o d r a w r o f 2 1o b r u to n i p t u p t u o o b r u t 3 1v c c py l p p u s r e w o p 6 1d n gd n gd n u o r g pin description of pt8a972ap
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 4 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| code format (w1 is for function codes and w2 for start codes) word format encoding and decoding timing encoding string : w2, w2, w2, w2, (n)xw1, w2, w2, w2, w2, (n)xw1, w2, w2, w2, w2, (n)xw1, ... ... 1st word 2nd word last word encoding output from PT8A971AP 1 2 3 14 15 function codes end codes press any button on PT8A971AP 9ms 9ms decoding output from pt8a972ap w1 w1: 1khz 50% duty cycle (typical) w2 w2: 500hz 75% duty cycle (typical) start code: 4 x w2 function code: n x w1 1 word
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 5 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| number of function codes (n) w1 4 1 10 1 16 1 22 1 28 1 34 1 40 1 46 1 52 1 58 1 64 1 decoding results end code forward (pulse) forward (high level) forward (high level) & left forward (high level) & right backward backward & right backward & left left right turbo encoding input and decoding result pc output timing pc timing of PT8A971AP pc timing of pt8a972ap v cc on/off pc si 5 minutes 5 minutes 8s 8s v cc off pc pc v cc off note : pins 2, 4, 6, 13 and 14 are high. v cc pins 2, 4, 6, 13, 14 pc 8s 8s 4 min
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 6 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| dc electrical characteristics dc electrical characteristics of PT8A971AP sym description test condition min type max units i cc supply current output unloaded 300 ua v il input low voltage guaranteed logic low level 0.5 v i ih input high current v in = v cc 10 ua i oh output high current i ol output low current v out = 3.5v -1 ma v cc operating voltage i stb stand-by current v out = 0.5v 0.5 ma v out = 3.5v -0.2 -1 ma v out = 0.5v 0.2 1 ma i il input low current v in = gnd -60 ua v ih input high voltage guaranteed logic high level 3.5 v - 2.5 4.0 5.0 v - 10 ua maximum ratings (above which the useful life may be impaired. for user guidelines, not tested) storage temperature ........................................................ -25 o c to +85 o c ambient temperature with power applied ...................... -10 o c to +40 o c supply voltage to ground potential (inputs & v cc only) .... -0.5 to +6.0v supply voltage to ground potential (outputs & d/o only) -0.5 to +6.0v dc input voltage ................................................................ -0.5 to +6.0v dc output current ........................................................................ 20ma power dissipation ....................................................................... 500mw note: stresses greater than those listed under maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other condi- tions above those indicated in the operational sec- tions of this specification is not implied. exposure to absolute maximum rating conditions for ex- tended periods may affect reliability. pins 7, 8, 10 pin 11 pins 7, 8, 10 pin 11 note : over the operating rating, 0c t a 70c, v cc = 4v note : over the operating rating, 0c t a 70c, v cc = 4v * output unloaded; 2.2m w feedback resistors for two reversing amplifiers; 200k w external resistor for on-chip oscillator. sym description test condition min type max units i cc supply current * 1.5 ma v il input low voltage guaranteed logic low level 0.5 v i ih input high current pins 1, 4, 7, 14 v in = v cc 10 ua i oh output high current i ol output low current v out = 3.5v -4 ma v cc operating voltage i stb stand-by current v out = 0.5v 0.5 ma v out = 3.5v -0.2 -1 ma v out = 0.5v 0.2 0.5 ma i il input low current v in = gnd -10 -60 ua v ih input high voltage guaranteed logic high level 3.5 v - 2.5 4.0 5.0 v in off state 30 ua pins 6, 8, 9, 10, 11, 12 pins 2, 5, 15 pins 6, 8, 9, 10, 11, 12 pins 2, 5, 15 dc electrical characteristics of pt8a972ap v in = gnd -20 ua pin 7 pins 1, 4, 14 pin 3 v in = v cc 20 ua v in = gnd -10 ua pin 3
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 7 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| ac electrical characteristics ac electrical characteristics of PT8A971AP sym description test condition min type max units f osc oscillator frequency * t fun cycle time of function code t sta t off cycle time of start code carrier frequency of sc pin time of auto-power-off ** t a = 25c, r = 200 k w 102 128 154 khz f osc = 102 to 154 khz 0.8 1 1.2 ms f osc = 102 to 154 khz 1.6 2 2.4 ms f osc = 102 to 154 khz 51 64 77 khz note: over the operating rating, 0c t a 70c, v cc = 4v * the relative frequency error between two on-chip oscillators of the PT8A971AP and pt8a972ap must be less than 25%. ** adjusting the external oscillator resistor will cause the auto-power-off time change. ac electrical characteristics of pt8a972ap sym description test condition min type max units f osc oscillator frequency * t fun cycle time of function code t sta t off cycle time of start code time of auto-power-off ** f osc = 128 khz to 154khz 0.75 1 1.25 ms f osc = 128 khz to 154khz 1.5 2 2.5 ms f osc = 102 to 154 khz 4 5 6 min. v si si pin vpp receive sensitivity t dec decode time for function code decode time for end code f osc = 128 khz 45 153 ms f osc = 128 khz to 154khz 7 9 11 ms note: over the operating rating, 0c t a 70c, v cc = 4v * the relative frequency error between two on-chip oscillators of the PT8A971AP and pt8a972ap must be less than 25%. ** adjusting the external oscillator resistor will cause the auto-power-off time change. f csc t a = 25c, r = 200 k w 102 128 154 khz guaranteed effective decoding 300 mv pins 2, 4, 6, 13 and 14 are high. 6.4 8 9.6 s any of pins 2, 4, 6, 13 and 14 is low. 3.2 4 4.8 min
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 8 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| application circuit typical application of PT8A971AP for transmit circuit with 9v battery s1 s2 s3 s4 s6 r7 200k r9 330 c12 .01u c11 4.7u c8 .02u r3 220k l1 2.2u b1 9v r4 6.8k r5 33k c9 68 c3 47 r1 100 c6 .02u l2 2.2u r2 4.7k c4 150 c2 150 c1 100 a1 antenna cr1 27.145m r6 100 c7 68 l4 6.8u s5 v4 4.7v v7 4148 v3 led r10 1k r8 3.9k r12 1om r11 10m l3 v1 9014 v2 9014 v5 8550 v6 9013 8 9 10 11 12 13 14 7 6 5 4 3 2 1 sc turbo nc forward gnd backward off so v cc pc osco osci left right PT8A971AP 1m 1m
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 9 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||| typical application of pt8a972ap v7 9013 v6 8050 v5 8550 v4 8550 v3 8050 v2 9013 vd 1 4.7v c14 .01u c13 4.7u c12 100u c11 1000 c10 30 c6 18 c5 .02u c4 4.7u c3 3000 c2 47 v1 c1815 c1 4 a1 c7 .1 u c8 470 c9 .1 u m1 m2 v11 9013 v12 8050 v13 8550 v14 8550 v15 8050 v10 9013 v8 9013 v9 8550 c16 .02u c17 .02u c15 .01u 9v 12v l1 2.2u l2 r1 1k r2 180k r3 2.2k r4 2.2m r5 2.2k r6 2.2m r7 2.2k r8 200k r9 330 r10 4.3k r11 10 r12 510 r13 220 r14 220 r15 330 r16 100 r17 100 r18 330 r19 330 r20 100 r21 1k r22 1k r23 1k r24 1k r25 1k c18 100u c19 .1 u r26 1k v16 9013 r27 3.9k v17 8550 vd 2 4148 r28 1m vi2 1 vo 2 2 si 3 osci 4 osco 5 pc 6 on/off 7 right 8 gnd 16 vo 1 15 vi1 14 vd d 13 tu rb o 12 backw ard 10 left 9 forw ard 11 pt8a972ap vi2 gnd vo2 vo1 si vi1 osci v cc osco turbo pc forward on/off backward right left r5 2.2k
data sheet PT8A971AP/972ap 5-function remote controller pt0066(28/08/01) ver:0 10 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| notes pericom technology inc. email: support@pti.com.cn w eb site: ww w .pti.com.cn , www.pti-ic.com china : no. 20 building, 3/f, 481 guiping road, shanghai, 200233, china tel: (86)-21-6485 0576 fax: (86)-21-6485 2181 asia pacific : unit 1517, 15/f, chevalier commercial centre, 8 wang hoi rd, kowloon bay, hongkong tel: (852)-2243 3660 fax: (852)- 2243 3667 u.s.a. : 2380 bering drive, san jose, california 95131, usa tel: (1)-408-435 0800 fax: (1)-408-435 1100 pericom technology incorporation reserves the right to make changes to its products or specifications at any time, without noti ce, in order to improve design or performance and to supply the best possible product. pericom technology does not assume any responsibility fo r use of any circuitry described other than the circuitry embodied in pericom technology product. the company makes no representations that circuitry described herein is free from patent infringement or other rights, of pericom technology incorporation.
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