UPD17231 Description
µPD17230, 17231, 17232, 17233, 17234, 17235, 17236 (hereafter called µPD17236 subseries) are 4-bit singlechip microcontrollers for small general-purpose infrared remote control transmitters. It employs a 17K architecture of general-purpose register type devices for the CPU, and can directly execute operations between memories instead of the conventional method of executing operations through the accumulator....
UPD17231 Key Features
- Infrared remote controller carrier generator circuit (REM output)
- 17K architecture: General-purpose register system
- Program memory (ROM), Data memory (RAM)
- 8-bit timer
- Basic internal timer/Watchdog timer : 1 channel
- Instruction execution time (can be changed in two steps) at fX = 4 MHz at fX = 8 MHz
- External interrupt pin (INT)
- I/O pins
- Low-voltage detector circuit (mask option) Unless otherwise specified, the µPD17236 is treated as the representative mod