DESCRIPTION

The µPD6125A 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.

FEATURES

• Transmitter for programmable infrared remote controller

• 19 types of instructions

• Instruction execution time: 17.6 µs (with 455-kHz ceramic oscillator)

• Program memory (ROM) capacity: 1002 × 10 bits

• Data memory (RAM) capacity: 32 × 5 bits

• 9-bit programmable timer: 1 channel

• I/O pins (KI/O): 8 pins

• I/O pins (I/O)

   • µPD6125A: 4 pins

   • µPD6126A: 8 pins

• Input pins (KI): 4 pins

• Serial input pins (S-IN): 1 pin

• 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 = 25°C) 1 µA MAX.

• Low-voltage operation: VDD = 2.0 to 6.0 V