This manual describes the features and hardware configuration of the Toshiba TMP47C221A and TMP47C421A 4‑bit CMOS microcontrollers. It includes pin assignments, functional descriptions of I/O ports, timers, LCD driver, and serial interface, as well as reliability and handling notes.
The document also lists electrical characteristics, recommended oscillator conditions, and typical performance curves. It is intended for designers integrating the device into general electronics applications such as computers, measuring equipment, and industrial robotics.
| Instruction execution time | 1.9 µs at 4.2 MHz |
|---|---|
| Interrupt sources | 6 (2 external, 4 internal) |
| Timer/Counter width | Two 12‑bit counters |
| LCD driver max digits | 12‑digit (1/4 duty) |
| Package | P‑QFP64‑1420‑1.00A |
The instruction execution time is 1.9 µs when the device runs at 4.2 MHz.
It provides six interrupt sources: two external and four internal.
The LCD driver can drive up to 12‑digit 1/4‑duty, 9‑digit 1/3‑duty, 6‑digit 1/2‑duty, or static LCDs.