TC9243APG/AFG TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9243APG, TC9243AFG Infrared Remote-Control Signal Transmission LSI The TC9243APG and TC9243AFG are infrared remote-control signal transmission LSIs suitable for remote control of audio systems, TVs, VTRs, CD players, etc. TC9243APG Features • Wide range of operating supply voltages, enabling low-voltage operation: • Thirty-two (32) basic functions are available. VDD = 2.0 to 4.0 V Support of multiple keying enables up to 112 instructions (28 × 4) to be output. • Interference with other equipment can be prevented because seven (7) bits out of eight (8) bits of system code are presettable. • Equipped with transmission display output pin. • Low current dissipation: IQD ≤ 1 µA (during standby) • Two types of package, DIP and flat type, are available: TC9243AFG DIP20: TC9243APG SOP20: TC9243AFG Weight DIP20-P-300-2.54A: 1.4 g (typ.) SOP20-P-300-1.27: 0.48 g (typ.) Pin Assignment 1 2005-02-25 TC9243APG/AFG Block Diagram Pin Function Pin No. Symbol 1 GND 20 VDD 2 XT 3 XT 4 RST Reset Input 5~12 K0~K7 Key Inputs 13~16 17 T0~T3 CODE Pin Name Function and Operation Power Terminal For applying the supply voltage (VDD = 2.0 to 4.0 V) Oscillator Terminal Input/output terminals for the ceramic oscillators, with built-in amplifier circuit and feedback resistor Key Scan Output Code Scan Output When this pin is set at “L” level, the inside is initialized. Equipped with a built-in pull-up resistor. Input terminals for the key matrix. Each pin has a built-in pull-down resistor. Key matrix scan output terminals. CMOS output. Scan output terminals for code setting. P-ch open drain output. 18 TXON Transmission Display Output Transmission display LED driving output terminal 19 TXOUT Transmission Output Infrared LED driving output terminal 2 2005-02-25 TC9243APG/AFG Operations 1. Key Matrix The TC9243APG and TC9243AFG enable the setting of a maximum of thirty-two (32) keys through combining the “K0~K7” and “T0~T3” keys. Furthermore, System Codes are settable in seven (7) bits through combining the “K0~K6” and “CODE” keys. • The keys “K08”, “16”, “24” and “32” (the shift keys) can be pushed simultaneously with other keys (the normal keys). However, the simultaneous keying of either shift keys or normal keys is prohibited. • The system code setting is done through the use of the diode jumper between the “CODE” lines and the “K0~K6” lines. With the diode jumper, the data code will become “1”. However, if the setting of the “CODE” and “K0~K6” keys is only at one point, the keys are connectable directly without using the diode jumper. Furthermore, the “S7” key is fixed at “1” and cannot be changed. 2. Data Format Note 1: “80H~8FH” out of the system codes are free codes. Although freely available in principle, these codes may already be used by other equipment. There is, therefore, a risk of interference occurring. Other system codes have been customized and their general use is therefore prohibited. Toshiba will assume no responsibility for interference and other problems that may result from the use of other system codes. 3 2005-02-25 TC9243APG/AFG 3. Key Data Code Key No. Kn D0 D1 D2 D3 D4 K01 K0 1 0 0 0 0 K02 K1 0 1 0 0 0 K03 K2 1 1 0 0 0 K04 K3 0 0 1 0 0 K4 1 0 1 0 0 K06 K5 0 1 1 0 0 K07 K6 1 1 1 0 0 K05 Tn T0 • Normal-key data • “00000” except dual keying. K08 K7 K09 K0 1 0 0 1 0 K10 K1 0 1 0 1 0 K11 K2 1 1 0 1 0 K12 K3 0 0 1 1 0 K4 1 0 1 1 0 K14 K5 0 1 1 1 0 K15 K6 1 1 1 1 0 K16 K7 K17 K0 1 0 0 0 1 K18 K1 0 1 0 0 1 K19 K2 1 1 0 0 1 K20 K3 0 0 1 0 1 K4 1 0 1 0 1 K22 K5 0 1 1 0 1 K23 K6 1 1 1 0 1 K24 K7 K25 K0 1 0 0 1 1 K26 K1 0 1 0 1 1 K27 K2 1 1 0 1 1 K28 K3 0 0 1 1 1 K4 1 0 1 1 1 K30 K5 0 1 1 1 1 K31 K6 1 1 1 1 1 K32 K7 K13 K21 K29 T1 T2 T3 • Normal-key data • “00000” except dual keying. • Normal-key data • “00000” except dual keying. • Normal-key data • “00000” except dual keying. D5 Shift-key data • “000” except dual keying Shift-key data “000” except dual keying 4 1 0 • Shift-key data • “000” except dual keying 0 1 • Shift-key data • “000” except dual keying 1 Normal keys: K01~K07, K09~K15, K17~K23, K25~K31 0 • 1 Shift keys: K08, K16, K24, K32 0 • 1 • D7 • 1 • D6 1 1 2005-02-25 TC9243APG/AFG 4. TXOUT Output Waveform Key ON Note 2: In case of fOSC = 455 kHz Data Transmission Waveform Continuous Transmission Waveform Carrier Waveform Tm = 5/fOSC: system clock a: system code output time fC = fOSC/12 When the oscillation frequency is 455 kHz, the signal is output after being pulse-modulated by 37.9 kHz at a duty ratio of 1/3, in 1/12 division, by the carrier generation circuit. Caution • • In preparing receiving software, strictly adhere to the following instructions: In the case of system codes, the same code is transmitted twice. Therefore always decode these two codes and determine whether they agree with each other. In the case of key data codes, always decode the key data code and its reversed code and determine whether they agree with each other. 5 2005-02-25 TC9243APG/AFG Maximum Ratings (Ta = 25°C) Characteristic Symbol Rating Unit Supply voltage VDD −0.3~5.0 V Input voltage VIN VSS − 0.3~VDD + 0.3 V Output current IOUT −20 Power dissipation PD 350 (300) Operating temperature Topr −20~75 °C Storage temperature Tstg −40~125 °C mA (Note 3) mW Note 3: The value shown in parentheses applies to the TC9243FG. Electrical Characteristics Recommended Operating Conditions (unless otherwise specified, VDD = 3.0 V, Ta = 25°C; for items with an asterisk (*), Ta = −25~75°C) Characteristic Symbol Test Circuit Test Condition Min Typ. Max Unit Operating supply voltage * VDD ⎯ ⎯ 2.0 ⎯ 4.0 V Oscillation frequency * fOSC ⎯ ⎯ 400 ⎯ 800 kHz “H” level VIH1 ⎯ (Except RST ) VDD × 0.7 ⎯ VDD “L” level VIL1 ⎯ (Except RST ) 0 ⎯ VDD × 0.3 “H” level VIH2 ⎯ ( RST ) VDD × 0.8 ⎯ VDD “L” level VIL2 ⎯ ( RST ) 0 ⎯ VDD × 0.2 Min Typ. Max Unit Input voltage Input voltage V V DC Characteristics (unless otherwise specified, VDD = 3.0 V, Ta = 25°C) Symbol Test Circuit Operating supply current IDD ⎯ fOSC = 455 kHz ⎯ ⎯ 1.0 MA Static supply current IQD ⎯ During “Hold” ⎯ ⎯ 1.0 µA Pull-down resistor RD ⎯ (K0~K7) 100 ⎯ 400 kΩ kΩ Characteristic RU ⎯ ( RST ) 25 ⎯ 100 “H” level IOH ⎯ (TXOUT) VOH = 1.5 V −10 ⎯ ⎯ “L” level IOL ⎯ (TXON) VOL = 1.5 V 5 ⎯ ⎯ ILI ⎯ VIN = VDD, VSS −1.0 ⎯ 1.0 Pull-up resistor Output current Input leak current Test Condition 6 mA µA 2005-02-25 TC9243APG/AFG Application Circuit Note 4: Ceramic oscillator CSB455E (Murata Seisakusho) FCR455K3 (TDK) C1 = C2 = 100 pF R = 6.8 kΩ C1 = C2 = 220 pF R = 2.2 kΩ or equivalent 7 2005-02-25 TC9243APG/AFG Package Dimensions Weight: 1.4 g (typ.) 8 2005-02-25 TC9243APG/AFG Package Dimensions Weight: 0.48 g (typ.) 9 2005-02-25 TC9243APG/AFG The following conditions apply to solderability: • Solderability (1) Use of Sn-63Pb solder bath · solder bath temperature = 230°C · dipping time = 5 seconds · number of times = once · use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder bath · solder bath temperature = 245°C · dipping time = 5 seconds · number of times = once · use of R-type flux RESTRICTIONS ON PRODUCT USE 030619EBA • The information contained herein is subject to change without notice. • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. • 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. • TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. 10 2005-02-25