M710A

M709A STMICROELECTRONICS | Alldatasheet

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ky7 SGS-THOMSON M709 - M709A JF, HIcROELECTRONICS M710 - M710A PCM REMOTE CONTROL TRANSMITTERS = M709 : 40 COMMANDS x 16 ADDRESSES The reference oscillator is controlled by a cheap = M710 :64 COMMANDS x 16 ADDRESSES ceramic or LC resonator. Two types of transmission = ADDRESS ORGANIZATION PROVIDES mode are available : "Flash” or "Carrier” mode. WIDE RANGE OF SIMULTANEOUS APPLI- = TheM709 is asimplified version of the M710 which CATIONS WITHOUT INTERFERENCE BE- can only transmit 40 commands with 16 possible TWEEN SYSTEMS addresses. The M710 on the other hand has the "IMPROVED PCM TRANSMISSION CODE _ fullsystem capacity :it can transmit 64 commands PROVIDES EASY RECOGNITION OF FALSE With 16 addresses. SIGNALS The M709 and M710 are produced with CMOS ™ "FLASH” OR "CARRIER” PIN SELECTABLE Si-gate technology and are available in 24 and TRANSMISSION MODES 28-pin dual in-line plastic packages respectively. = END OF TRANSMISSION CODE = SINGLE CONTACT MATRIX KEYBOARD | = INTEGRATED ANTIBOUNCE AND | INTERLOCK | = WIDE SUPPLY RANGE (M709 - M710 4.5 to 10.5V)/ (M709A - M710A3 to 10.5V) ~ = WIDE REFERENCE FREQUENCY RANGE P co oP (445 to 510kHz ceramic resonator) Ye io me WH y y = VERY LOW POWER CONSUMPTION DUR- Na ING TRANSMISSION. OUTPUT DUTY CY- CLE 0.15% (flash mode), 0.7% (carrier mode) DIP24 = FULLY COMPATIBLE WITH M491 AND M494 (Plastic Package) (In flash mode) | ORDER CODE :M709B1 / M709AB1

DESCRIPTION

These ICs have been developed for remote control | in consumer applications (TV, radio, video re- corders) or in the industrial field and use a highly reliable transmission code which has a capacity of | a 1024 channels. Each transmitted word is struc- A > tured into 4 bits which constitute the address and oo ay i) 6 bits which constitute the command (64 com- R_=inl \\\\ Y mands available). One command (1 st = 000000) NG ont 1 is used to transmit the "end of transmission code” when the key is released. Additional bits are trans- DIP28 mitted for synchronization of transmitter and re- (Plastic Package) ceiver clocks and for security checks. The address | organization provides a wide range of simultane- ORDER CODE : M710B1 / M710AB1 ous applications without interference between sys- tems. Thereceiver accepts the decoded command j only if the transmitted address matches the ad- | dress selected at the receiver. 16 addresses are available for this purpose. be March 1995 110 M™@ 7929237 0069311 70T a CO EE ee_—_—

M709 - M709A - M710 - M710A PIN CONNECTIONS DIP24 - M709 /M709A DIP28 - M710/ M710A YS I rranamsson [, oH vm rraroussion f 2h vw osc. in [2 23 [} output OSC. IN 2 ar OUTPUT osc. out []3 221 J Ves osc. out (] 3 26{ ] Ves e(}s aplx uC]s ap] x o(js 2f]y aL}s aply pores cfs 19 Fy w PAORESS rOe alyw sCl7 whz eq af jz a(}e 17D) test oCys af] rest «Os slo c(f}s afjo ie sae Oe Meu . 1 ° ‘Gn «iyo kO2 won 2 wEfe [Jn iC} isf]™ A tO} 15 |] ne. 2 a Note : The test pin must be connected to Vss. FUNCTIONAL DESCRIPTION Yc Vp_~=~SCOSGIN.OSC.OUT TEST 24 24 12} 13} i, Ea} Yeo ADDRESS. M709 wig [29 outeut a M709A Transucsionucce [ EDC BA Ki umNoeo yy, L—__lidsdal dd | LH pee a IPD POE 2 {4 Gh} 2 rx lve rawevession wove heey i! T_tiedddad (ammceteeee y TT Tal i a g i 3 a a 3 TT fal Fy —_ so) 7) 3) so oof oi wel al i eno ses OM >/ 4 Ses THOMSON M@ 7929237 O0b9312 b4b Tee

M709 - M709A - M710 - M710A BLOCK DIAGRAM ROW INPUTS. COLUMN INPUTS | KEYBOA ROLOGIC OSCILLATOR 2 oe : TRANSMISSIO NMODE TEST i ABSOLUTE MAXIMUM RATINGS [Symbot_[ aati Supply Voltage | oar |v Input Voltage -0.3 to Voo +0.3 [fet Output Curent 5055) a [Fa [Tol Package Power Dissipation [200m Operating Temperature Ls | c_]# Storage Tonpertue [sens [oii Stresses above those listedunder "Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and funcional operation of the device at these or any other conditions above those incicated inthe operational sactione ofthis speatition is notimplied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS [Symbot[ Parameter Valve | Unit | Voo Supply Voltage Range: M709/M710 4510 10.5 v Input Voltage Range 0 to Voo Vv [fol __| 1R Output Current ( t< 50s) [max.25 | ma | [tor | Reference Frequency Range 445 to510 | kHz | Operating Temperature Range [te _| Serial Resistance of a Closed Key Contact [| max.25 | ka | | tp _ | Parallel Resistance of Open Key Contact | min.22 | Ma |# | __Re__| Serial Resistance of the Ceramic Resonator [| max.20 | a |8 — SBR mM 792923? 0069313 562 eeeeeeeeeeeaeaasaaaasaaaaaaaaaaaaaaaaaaaaaaaaaaaaaacaaaaaaaaaaaaaaaaaaaaasaaaaaaaaaaaaaaaaasaaaaasasaaaaaaaaasaamaaaaaaaaasacaaaaaaamaaaaaaaaaaaaaaaaaaaasaaaaaaacaaaaaaaaaaaaaaaaaaaaaaaaaaaaaacacaaaaaaaaasaaaaasaaaaaaaaaaaaaaaaasaaaaaamamammamammaaaassaal

M709 - M709A - M710 - M710A STATIC ELECTRICAL CHARACTERISTICS (over recommended operating conditions) Typical values are at 9V and Tama = 25°C __Parametor | Pins | TestConditions | Min. | Typ. | Max. Unit | Supply Current M709 Pin 24 Vop = 9V, IR Output open : M710 Pin 28 Stand-by 15 | pA Operating (one key closed) 7 | mA High State M709 Pin 23 Voo = 9V, Vou = 8V mA IR Output Current _| M710 Pin 27 Voo = 4.5V, Vox = 3.5V mA lo. | Low State M709 Pin 23 Vpp = 9V, Vo. = 1V 15 | 25 mA IR Output Current__| M710 Pin 27 Voo = 4.5V, Vo. = 1V 03 | 05 mA Vin | Input Threshold High | Selection Inputs AtoH | Vpo = 9V Vv Noo 45V v Vin Input Threshold Low | Selection Inputs KtoQ | Von = 9V 3 v Voo = 4.5V 15 v Input Low Current _| Pull-up Inputs A to H Voo = 9V, Vi = 4.5V | -60 |_| -300] ya | [ im | InputHigh Current | Pull-down Inputs KtoQ | Voo=9V,Vu=4.5V “BA Input High Current Address Selection Inputs | Vop = 9V, Vi. = 8.25V pA (oscillator running) k Input Leakage Trans. Mode Test Pin Voo = 9V, Vin = 0 to 9V pA 3 Current E [tes [OuputGurent [Ose Ot | Vo=8V. Osc.in=Ves_| 2 | -@ [oalé TRUTH TABLE [Sone ee Oi Ne ‘Command Bits AB C DE F G H/K I t M NO P Q/Ci C2 C3 C4 C5 CE [0 END OF TRANSMISSION 00 0 0 0 0 1 x x 1 0 0 00 0 2 x x 0 1 000 0 3 x x 1 10 00 0 4 x x 0 0 100 0 5 x x 10 1 00 0 6 x xX 0 1 141 0 0 0 7 x X}/1 4 1 0 0 0 8 x x 0 001 0 0 9 x x 1 001 00 10 x Xx 0 41 0 14 0 0 "1 x x 1 101 00 12 x x 001 141 00 13 x x 1 0 1 10 0 14 x x o 14 1 0 0 15 x a {oo oe x/i 1 1 1 0 0 16 x x 0 0 0 1 0 0

7 Xx x 1 0 0 1 0 0

22 Xx x 0 11 1 0 0

23 | x _ Oe Oe, 24 x x 0 0 0 1 0 0 25 x x 1 00 1 00 26 x x o 1010 0 27 x x 1 101 00 28 x x 00 14 1 0 0 29 x Xx 1 0 1 1 0 Olg 30 x x o 11 1 0 OlF 31 x X/i_1 1° 1:0 0}2 40 ey 88: 77, SESTHOMSON mm 7929237 0069314 419

M709 - M709A - M710- M710A TRUTH TABLE (continued) [Soman ee otto a te mts [A BC DE F G H/K 1 LM NO P Q/Ci C2 C3 CG C5 C6 32 xX x 0 0 0 1 0 0 33 x Xx 100100 wa x x o 10 1 0 0 35 x x 1 101 00 36 x x oo 14 1 0 0 37 x x 101 1 00 38 x x o 1 4 1°00 39 x x|1 1 141 1 0 0 40 x x 00 0 7 017 41 x x 1001041 42 x x 010101 43 x x 1 104041 44 x x 0014101

45 Xx x 101 101

47 Xx X{1 404 1 01

48 X x 000010 7

50 x x 0 100% 1 51 x x 1410011 52 x x oo 1014 1 53 x x 101011 54 x x o 1401441 55 x X{a 4 4 0 41 56 x Tx 00077 7 57 x x 100% 1 58 x Xx 010% 1% 4 59 x x 1104 14 60 x x 0 o14%4 144 61 x x 10 4 14 14 44g 62 x Xx o 444144 x X}i 444471 3 DESCRIPTION The different code introduced for the even and odd he si transmit ith inf ir “1s” improves the capability to recognize false The signals are smitted with infrared light using codes at the receiver end. For example the double pulse code modulation. Each word consists of 12 whi th . ith"01" bits. The binary information of a bit is determined _©"TOr which can cause the exchange”10” with”01 by the time interval between two pulses. is easily detected. . . If” T’ isthe timebase, the bits are coded as follows : Aparity bitis also addedin order to {urther increase * : the reliability of the transmission. This bits is "1” if i the number of transmitted”1s” is even while itis "0” Odd bits (1, 3, etc) T eT if the number of transmitted "1s” is odd. O=T In addition, every word contains a preliminary 1227 | 0” 4" pulse, a start pulse and a stop pulse. The spacing between the preliminary and the start pulse is 4T. This is followed after 1T by 11 data pulses (one Even bits (2,4, etc) ) or £ parity bit), and terminated ater 4T interval by a stop Hy . O=T nn nae 5 Consequently, a word in which the binary digit 0 1=3T ° ' 2 Occurs ten times has a total duration of 21T. 8 Aword containing ten "1s" has a duration of 36T. ys: 5/10 TS ED RSS $$ @™§ 7929237 OOb9315 355 a 0 eee OO OG,G,GO,G OL EE ———eEV_eeQaaLQLQL a

M709 - M709A - M710 - M710A Example: o| 1 1 1 [o] 1 |ojo} 1 jo t te ame EE Prelim. Start aie Command Parity Stop 2 Pulse Pulse Bit Pulse 3 SYNCHRONIZATION BETWEEN TRANSMIT- The contact must be continuously closed for a TER AND RECEIVER minimum of 25ms. The transmitter and the receiver can operate with Double and multiple contact operations are not different reference frequencies. accepted. Typical values suitable for correct operation of the The command information is repeatedly transmit- system should be between 445 and 510kHz, using _ted at intervals of 102ms (fet = 500kHz) as long as. a cheap ceramic resonator. the push button remains operated. Synchronization between the transmitter and the when the contact is interrupted the circuit trans- receiver, necessary to obtain the wide range of mits, after a pause of about 18 ms, the "end of frequency tolerance described above is achieved transmission code” and returns to stand-by mode. by measuring in the receiver the interval between _ . . the start pulse and the first data pulse, storing this It the contact is interrupted while a command is value and using it as time base T. being transmitted the circuit carries on with the transmission to the end. After a pause of about 18 KEYBOARD (pins Ato Q)/CODEREPETITION _‘™S it transmits the end of transmission code. One column input (K to Q) has to be connectedto © No command is accepted until the "end of trans- one row (A to H) input to activate the transmitter. mission code” is over. COMMAND: COMMAND END OF ‘TRANSMISSION TRANSMISSION TRANSMISSION KEY FLASH CARRIER | KEY CODE CLOSED “ ; RELEASED | | <>! ANTIBOUNGE — REPETITION 18ms g (25ms) TIME (102ms) 3 R TRANSMISSION MODE (pin 1) The M709/M710 can operate in Flash (pin 1 = Vpo) or Carrier (pin 1 = Vss) transmission modes. Using a reference frequency of 500kHz the output signal has these formats : Flash Mode Transmission time 10s min. = 2.1ms max. = 3.6ms. duty cycle = 0.15% T=10qs § 6/10 Gy 8s: IZ, SES STHOMSON Mm 792923? OOb931b 291 FQ Od OO OOOO OOOO OOO OO EEO

M709 - M709A - M710 - M710A Carrier Mode Transmission time min. = 32.76ms 26ys max. = 56.16ms . ’ duty cycle = 0.7% 142.0%s __ T =1,56ms g _ A a ADDRESS (pins X, Y, W, Z) The Address information is coded and transmitted as follows : ADDRESS BITS COMMANDS BITS. ao OO SpDSNnmoam™quUNXNANo_NNwNn—..nnonv”nnn—_> PRELIMINARY PULSE PARITY | STOP — HA a Address Number [At AZ AS Aw 1 0 0 0 0 L L L L 2 1 0 0 0 H L L L 3 0 1 0 0 L H L L 4 1 1 0 0 H H L L 5 t) 0 1 0 L L H L 6 1 0 1 0 H L H L 7 0 1 1 0 L H H L 8 1 1 1 0 H H H L 9 0 0 0 1 L L L H 10 1 0 0 1 H L L H " 0 1 0 1 L H L H 12 1 1 0 1 H H L H 13 (i) 0 1 1 L L H H 14 1 0 1 1 H L H H a 15 t) 1 1 1 L H H H g 16 1 1 1 1 H H H H Fy The address inputs have internal pull-downs which are disabled during stand-by. Single Address Selection Multiple Address Selection X YW2Z x YWZ po | ADDRESS 13 i Yoo ADDRESS 13, | O—+ fy | ADDRESS 11 § 8 a Note : unused inputs can be left open or connected to Vss. by 88: 7/0 77, SES-THOMSON mm 7929237 0069317 1¢3 ee

M709 - M709A - M710 - M710A TYPICAL APPLICATION FLASH MODE 330 +0 L__} wv ADDRESS _ a Vop = T Mone! axtoariT 7 xt OUT 200 i y BD237 Se 220UF x 5 7 2 TD, 7 455 to 510kHz 100pF a aa 100pF Infrared Diode Peak Current = 1.8A $ Total Average Consumption = 6 5A 3 CARRIER MODE ° 330 wv ADDRESS y ~ _ y 2xLpe7i) > ta = x OUT tka D+ H 0377 T Move D237 Se 220uF Xt Ee ne | tae doses xX 4 xX 7. 455 to 51 0kHz 100pF aa voor Infrared Diode Peak Current = 1.258 § Total Average Consumption = 13mA_ 3 ao : — M@ 7929237 0069318 Ob4 mm EOE ee OO

M709 - M709A - M710 - M710A PACKAGE MECHANICAL DATA

24 PINS - PLASTIC DIP

| ; D ppssanssasas g 1 ag pe Oe ee i LT [mensions | gg ss | a OY OO [eos orn [rs oo i a a [oe | [ese 0 sr [ea 09 [es er 00 a a 1a f M$ 7929237 0069319 TTO ee

aaa... M709 - M709A - M710 - M710A PACKAGE MECHANICAL DATA

28 PINS- PLASTIC DIP

a AAaTAAaTA AANA a at |- [—] yee | H i SSS rae 3 Di [ Milimeters snes | eimensions |g [ny [we [wn [Typ | [oad oes a OY On a OC a OC a ZS Tae se | SSCd tec sos es a a LS AC MO ee | 0.175 ie a | “010 | Information fumished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence Is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components inlife ‘support devices or systems without express written approval of SGS-THOMSON Microelectronics. © 1995 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of °C Components of SGS-THOMSON Microelectronics, conveys a liconse under the Philips °C Patent. Rights to use these components ina FC system, is granted provided that the system conformsto the FC Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - ‘Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 10/10 __ “Hh he SRT mm 7929237 0069320 712 Lee