The �PD6125A and 6126A are 4-bit single-chip microcontrollers for infrared remote controllers for TVs, VCRs, stereos, cassette decks, air conditioners, etc. These microcontrollers consist of ROM, RAM, a 4-bit parallel-processing ALU, a programmable timer, key input/ output ports, and transmit output ports. Functioning is controlled in software.

Transmitter for programmable infrared remote controller 19 types of instructions Instruction execution time: ceramic oscillator) 17.6 �s (with 455-kHz

Transmission-in-progress indication pin (S-OUT): 1 pin Transmit carrier frequency (REM) fOSC/12, fOSC/8 Standby operation (HALT/STOP mode) Low power consumption Current consumption in STOP mode (TA 1 �A MAX. Low-voltage operation: VDD 6.0 V

Program memory (ROM) capacity: � 10 bits Data memory (RAM) capacity: � 5 bits 9-bit programmable timer: 1 channel I/O pins (KI/O): 8 pins I/O pins (I/O) �PD6125A: 4 pins �PD6126A: 8 pins

Input pins (KI): 4 pins Serial input pins (S-IN): 1 pin Caution To use the NEC transmission format, ask NEC to supply the custom code. The mask option (PLA data) setting �PD6126A is different from that of the �PD6125, 6126. When a register is used as the operand of a branch instruction, do not use R0.

The information in this document is subject to change without notice. Document No. U12392EJ4V0DS00 (4th edition) (Previous No. IC-2014B) Date Published May 1997 N Printed in Japan

Part Number Package 24-pin plastic shrink DIP (300 mil) 24-pin plastic SOP (300 mil) 28-pin plastic SOP (375 mil)

Part Number Item ROM capacity RAM capacity I/O pins S-IN pins Current consumption (fOSC = STOP) (MAX.) S-IN high level input current (MAX.) Transmit carrier frequency Low-voltage detection (reset) circuit Supply voltage Package 24-pin plastic SOP (300 mil) 24-pin plastic shrink DIP (300 mil) (KI/O0-7, I/O00-03) Provided fOSC/12, fOSC/8 Not provided VDD V 28-pin plastic SOP (375 mil)