TOSHIBA TC9244P TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC TC9244P LSI FOR REMOTE CONTROL RECEIVING The TC9244P is an LSI for infrared Remote Control receiving. It is used for remote control of devices such as audio system, TVs, VTRs, CD players. Remote control systems are easily constructed using TC9244P in combination with transmitting LSls TC9243P and TC9243F. FEATURES Basic function : 9 Hold pulse function : 7 DIP20-P-300-2.54A Cyclic pulse function : 2 Weight : 1.4g (Typ.) 3 functions out of 7 hold pulse functions are shift key outputs and can be output in parallel with other outputs corresponding to double-pushed signals sent from sending side. 1 function out of 2 cyclic pulse functions can be control outputs using an external key in addition to control by remote control signal. 8bit system codes are detected. System codes permitting signal receiving can be set up to 4 bits. Interference with other equipment can be thus prevented. PIN CONNECTION (TOP VIEW) GND VpD DPOS DP16 DP24 XT XT RST RX IN HPO1 IN26 HPO2 HPO3 HP04 CP25 CP26 Cint Cin2 1 2 3 4 5 6 7 8 9 CiInN3 o Cina 1 2002-01-17TOSHIBA TC9244P BLOCK DIAGRAM Rx IN IN26 Oscillation circuit Timing generator Shumitt circuit GND Vpp DPOs DP16 Abit DP24 microcontroller @ ROM: HPO1 768 x8 bits s Ad RAM : a . HPO2 16x 4 bits 3 Q 3 HPO3 HPO4 cP25 Input port CP26 (with pull-down resistor) 7 8 9 1 Cint Cin2 Cin3 Cina PIN FUNCTION PIN No. SYMBOL PIN NAME FUNCTION AND OPERATION 0 power supply Applies power supply voltage. (Vpp =5.0V, Typ.) 2 XT Oscillator Ceramic oscillator output and input amplifier circuit and 3 XT terminal feedback resistor are built in. 4 RST Reset input When set to mie level, initializes internal states. pull-up resistor are built in. 5 RON Remote control Input remote control signal whose sub-carrier signal is signal input removed. Inverts corresponding output (CP26) each time H level 6 IN26 Cyclic input is input. Pull-down resistors are built in. 7~10 Cin1~Cina | Code input Inputs system code which enables receiving. Pull-down resistors are built in. Inverted by corresponding remote E 11, 12 CP26, CP25 | Cyclic output control signal and key input. "L level = when power is turned on. (reset) _ "fb 13~16 HP04~HPO1 Hold output Remains at "H level during remote a 17~19 |DP24, 16, 08 control signal input. 3 2 2002-01-17TOSHIBA TC9244P OPERATIONS 1. Setting receive-enable system code Transmitting LSIls TC9243P and TC9243F support an 8bit system code transmitting format to prevent interference with other machines. This code makes each machine unique and thus prevents interference. With TC9244P, the lower 4 bits of the 8bit system code used to enable receive can be set. The upper 4 bits are fixed to 1000. (Setting value range : 80"~8F HEX.) Once this receive-enabling system code is set, a match between the system code of the remote control input signal and the set system code enables reception of the subsequent key data code. VppD -- To set the receive-enabling system code, connect pins Cjyjji~q to Vpp using jumpers. The jumpers correspond to system code bits O~3 (Sqg~S3). Connecting the pins to Vpp using jumpers sets the corresponding bits to 1. . Receive signal check The transmitting LSIs TC9243P and TC9243F support transmission of a check code in one-shot waveforms in order to prevent malfunctioning due to data read errors. As the check code, the same system code is sent again ; after the key data code, the inverted key data code is sent. System code System code Key data code Key data code Leader pulse so|s1 |s2|s3|sa]ss|s6|s7 so|s: |s2|s3|sa]ss| s6|s7 D9[01[D2|03|D4|Ds|o6|07 Do 0; |ds|D3 [Dads |dg [07 TC9244P decodes all data. The code is sent twice. TC9244P determines that the data are valid only when codes in both transmissions match. 3 2002-01-17TOSHIBA TC9244P 3. HP, DP and CP output pulses 3-1. Key ON Receive signal ll One-shot output | Approx. 110ms Key ON Consecutive signal Receive signal ll ar ll & ll | HPO1~HPO4, DP08, DP16, DP24 (Hold pulse) One-shot signal J , | Consecutive output | | Key ON Receive signal ll A ll B Output A Output B Approx. 110ms | Approx. 110ms Approx. 110ms When the initial one-shot system code and the receive signal are checked and the data are valid, the hold pulse is switched to H level. If the receive signal is only a one-shot signal, the output switches to L level after approximately 110ms. If the key is held down after the one-shot signal is output and signals are input consecutively, the output stays at H level. When the key is released and the consecutive signal input stops, key release is determined after 110ms elapses after the last consecutive signal input. The output is switched to L level. DPO8, DP16, DP24 are used for outputting shift pulses. These are set to H level in parallel to other output in response to a signal indicating that two keys are pressed simultaneously sent by the transmitter. This type of output is optimal for tape deck RECORD-PLAY, RECORD-PAUSE and RECORD- REVERSE output. 4 2002-01-17TOSHIBA TC9244P 3-2. CP25 and CP26 (Cyclic pulses) Key ON | & Receive signal f ll l| IN26 input $5 $ Cyclic output (CP26 only) Cyclic pulses are inverted each time a one-shot signal is received. Setting pin IN26 to H level also inverts CP26. Unless output is stabilized within 4ms, cyclic pulse is not valid. Thus, an external component used to prevent chatter is not required. Cyclic pulse output is optimal for turning power on/off and for muting. 4. Code assignment (Key numbers : TC9243P and TC9243F send key numbers) KEY DATA CODE NUMBER Do [D1 [D2 | D3 | Da | Ds | De | D7 OUTPUT FUNCTION Kot 1 {| 0 | Oo {| O | oO | (*) | () | (@) | HPO Kg2 0 1 0 0 o | (*) | @ | @ | HPo2 Hold Kg3 1 1 o | 0 | O | (*) | (*) |) | HPO3 Koa 0 0 1 0 o | ) 1 @ 1 @ | Hpo4 Kos (*) | (*) | CO) |) |) 1 0 0 DPO8 Hold K16 (*) |) |) | AQ |e) | 1 1 0 DP16 and K24 (*) |) |) | @) |] @ ] 1 0 1 DP32 Shift K25 1 0 0 1 1 | (*) | (*) |) YY cP25 i Ke [olifol[i[i1//[@[@[ ce Cyclic (*) Dont care (Corresponding output changes regardless of data) 5 2002-01-17TOSHIBA TC9244P MAXIMUM RATING (Ta = 25C) CHARACTERISTIC SYMBOL RATING UNIT Supply Voltage Vpb -0.3~6.0 Vv Input Voltage VIN GND -0.3~Vpp+0.3] V Power Dissipation Pp 350 mW Operating Temperature Topr -40~85 C Storage Temperature Tstg -65~150 C ELECTRICAL CHARACTERISTICS Recommended operating conditions (Unless otherwise specified, Vpp =5.0V, Ta = 25C) TEST CHARACTERISTIC SYMBOL | CIR- TEST CONDITION MIN. TYP. MAX. UNIT CUIT Operating Supply _ ake Voltage Vpp |Ta= -40~85C 45 5.5 V Oscillation Frequency fosc 400 800 kHz H" Level VIH1 | (Except RST, Rx |N) Vpp x 0.7 Vpp Vv Input H Level VIH2 |(RST, Rx IN) Vpp x 0.8 Vpp Vv Voltage L Level VILA |(Except RST, Rx |N) 0 Vppx0.3| V L Level ViL2 | (RST, Rx jn) 0 Vppx0.2| V DC Characteristics (Unless otherwise specified, Vpp =5.0V, Ta = 25C) TEST CHARACTERISTIC SYMBOL | CIR- TEST CONDITION MIN. | TYP. | MAX. | UNIT CUIT Operating Supply _ Current IpD | fosc = 455kHz _ 1.0 3.0 mA Pull-down Resistor Rp |(IN26, Cyn) 100 | 200 | 400 kQ Pull-up Resistor Ry | (RST) 25 50 | 100 | kO Output H" Level IOH |(CP, HP, DP) Voy =4V -1.0 | -4.0 _ mA Current L" Level lOL |(CP, HP, DP) VoL =1V 1.0 8.0 _ mA Input Leak Current ILI |VIN=Vpp. GND - 1.0 _ 1.0 LA 6 2002-01-17TOSHIBA APPLICATION CIRCUIT 1. TC9244P circuit 4 Control Signal pid Vbb DPOs8 DP16 DP24 HPO1 HPO02 HPO3 HP04 cP25 CP26 10 F ) TC9244P GND XT 1 2 o Ry 0 P xT RST Rx IN _IN26 cCind Cin2 Cin3 Cina 3 4 6 7 8 9 10 ) + f | ] | | | From Photo receiver - _ ~ (*) Ceramic oscillator CSB455E (Murata Seisakusyo) Cy =C2 = 100pF, Rz = unnecessary In case of influenced by oscillation noise, add resistor Ry to 10kQ. MAX. FCR455K3 (TDK) Cy =C2=220pF, R2 =4.7kQ, R41 =unnecessary In case of influenced by oscillation noise, add resistor Rp to large (>4.7kQ). or equivalent TC9244P 2002-01-17TOSHIBA TC9244P PACKAGE DIMENSIONS DIP20-P-300-2.54A Unit : mm 20 11 Co Od ds a) ) Gon ERP ET et Patri 6.440.2 < 25.1MAX 24.640.2 0.95+0.1 Nz Qs a Be} @ 1 Oy = J z a oO in 3 oS Weight : 1.4g (Typ.) 8 2002-01-17TOSHIBA TC9244P RESTRICTIONS ON PRODUCT USE 000707EBA @ TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the Handling Guide for Semiconductor Devices, or TOSHIBA Semiconductor Reliability Handbook etc.. @ The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (Unintended Usage). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. @ The products described in this document are subject to the foreign exchange and foreign trade laws. @ The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. @ The information contained herein is subject to change without notice. 9 2002-01-17