UPD66P04B

DATA SHEET MOS INTEGRATED CIRCUIT µPD66P04B 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION DESCRIPTION The µPD66P04B is a microcontroller for infrared remote control transmitters which is provided with a one-time PROM as the program memory. Because users can write programs for the µPD66P04B, it is ideal for program evaluation and small-scale production of the application systems using the µPD6604. When reading this document, also refer to the µPD6604 Data Sheet (U11281E). FEATURES Program memory (one-time PROM) : 1002 × 10 bits Data memory (RAM) 9-bit programmable timer Command execution time Stack level I/O pins (KI/O) Input pins (KI) Sense input pin (S0) S1/LED pin (I/O) Power supply voltage Operating ambient temperature Oscillator frequency POC circuit : 32 × 4 bits : 1 channel : 16 µs (when operating at fOSC = 500 kHz: RC oscillation) : 1 level (Stack RAM is for data memory RF as well.) : 8 units : 4 units : 1 unit : 1 unit (When in output mode, this is the remote control transmission display pin.) : VDD = 2.2 to 3.6 V : TA = –40 to +85 °C : fOSC = 300 kHz to 1 MHz Built-in carrier generation circuit for infrared remote control APPLICATION Infrared remote control transmitter (for AV and household electric appliances) Because the µPD66P04B uses an RC oscillation system clock, its accuracy and stability are lower than the models using ceramic oscillation. In applications where the clock accuracy and stability po...