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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: VDD = 2.0 to 4.0 V * Thirty-two (32) basic functions are available. Support of multiple keying enables up to 112 instructions (28 x 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 A (during standby) Two types of package, DIP and flat type, are available: DIP20: TC9243APG SOP20: TC9243AFG Weight DIP20-P-300-2.54A: 1.4 g (typ.) SOP20-P-300-1.27: 0.48 g (typ.)
TC9243AFG
Pin Assignment
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TC9243APG/AFG
Block Diagram
Pin Function
Pin No. 1 20 2
3 4
Symbol GND VDD
XT XT
Pin Name Power Terminal
Function and Operation For applying the supply voltage (VDD = 2.0 to 4.0 V)
Input/output terminals for the ceramic oscillators, with built-in amplifier circuit and feedback resistor
Oscillator Terminal
RST
Reset Input
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. Transmission display LED driving output terminal Infrared LED driving output terminal
5~12
K0~K7
Key Inputs
13~16
T0~T3
Key Scan Output
17 18 19
CODE TXON TXOUT
Code Scan Output Transmission Display Output Transmission Output
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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.
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3. Key Data Code
Key No.
K01 K02 K03 K04 K05 K06 K07 K08 K09 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 T3 T2 T1 T0
Tn
Kn
K0 K1 K2 K3 K4 K5 K6 K7 K0 K1 K2 K3 K4 K5 K6 K7 K0 K1 K2 K3 K4 K5 K6 K7 K0 K1 K2 K3 K4 K5 K6 K7
D0
1 0 1 0 1 0 1
D1
0 1 1 0 0 1 1
D2
0 0 0 1 1 1 1
D3
0 0 0 0 0 0 0
D4
0 0 0 0 0 0 0
D5
D6
D7
* *
Shift-key data "000" except dual keying
* *
Normal-key data "00000" except dual keying. 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0
1
0
0
* *
Shift-key data "000" except dual keying
* *
Normal-key data "00000" except dual keying. 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1
1
1
0
* *
Shift-key data "000" except dual keying
* *
Normal-key data "00000" except dual keying. 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1
0
1
* *
Shift-key data "000" except dual keying
* *
Normal-key data "00000" except dual keying.
1
1
1
* *
Normal keys: K01~K07, K09~K15, K17~K23, K25~K31 Shift keys: K08, K16, K24, K32
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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.
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Maximum Ratings (Ta = 25C)
Characteristic
Supply voltage Input voltage Output current Power dissipation Operating temperature Storage temperature
Symbol
VDD VIN IOUT PD Topr Tstg
Rating -0.3~5.0
VSS - 0.3~VDD + 0.3
Unit
V V mA (Note 3) mW C C
-20
350 (300)
-20~75 -40~125
Note 3: The value shown in parentheses applies to the TC9243FG.
Electrical Characteristics
Recommended Operating Conditions
Characteristic
Operating supply voltage Oscillation frequency "H" level
Input voltage "L" level "H" level Input voltage "L" level VIL2 VIL1 VIH2
(unless otherwise specified, VDD = 3.0 V, Ta = 25C; for items with an asterisk (*), Ta = -25~75C)
Symbol * *
VDD fOSC VIH1
Test Circuit
Test Condition
(Except RST )
(Except RST ) ( RST ) ( RST )
Min
2.0 400
VDD x 0.7 0 VDD x 0.8 0
Typ.
Max
4.0 800
VDD VDD x 0.3 VDD VDD x 0.2
Unit
V kHz
V
V
DC Characteristics (unless otherwise specified, VDD = 3.0 V, Ta = 25C)
Characteristic
Operating supply current Static supply current Pull-down resistor Pull-up resistor Output current Input leak current "H" level "L" level
Symbol
IDD IQD RD RU IOH IOL ILI
Test Circuit
Test Condition
fOSC = 455 kHz During "Hold" (K0~K7) ( RST ) (TXOUT) VOH = 1.5 V (TXON) VOL = 1.5 V VIN = VDD, VSS
Min
100 25
Typ.
Max
1.0 1.0 400 100
Unit
MA
A
k k mA
-10
5

1.0
-1.0
A
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Application Circuit
Note 4: Ceramic oscillator CSB455E (Murata Seisakusho) FCR455K3 (TDK) or equivalent
C1 = C2 = 100 pF C1 = C2 = 220 pF
R = 6.8 k R = 2.2 k
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TC9243APG/AFG
Package Dimensions
Weight: 1.4 g (typ.)
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Package Dimensions
Weight: 0.48 g (typ.)
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TC9243APG/AFG
The following conditions apply to solderability: * Solderability (1) Use of Sn-63Pb solder bath * solder bath temperature = 230C * 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 = 245C * dipping time = 5 seconds * number of times = once * use of R-type flux
RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
030619EBA
* 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.
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