This handbook describes the Toshiba TMP87C874F and TMP87CH74F CMOS 8‑bit microcontrollers. It lists key features such as high‑speed instruction execution, built‑in 8‑bit A/D converter, VFT driver, multiple timers, and extensive interrupt capabilities. Pin assignments, block diagrams, and functional descriptions of the CPU core, memory architecture, and peripheral interfaces are included.
The document also covers operational modes, power‑saving states, oscillator recommendations, and example assembly code for common tasks such as ROM access, BCD conversion, and multi‑way jumps. Technical specifications and electrical characteristics are provided for design reference.
| CPU core | 8‑bit CMOS microcontroller |
|---|---|
| Operating voltage | 2.7 V–5.5 V at 32.768 kHz, 4.5 V–5.5 V at 8 MHz |
| Number of I/O ports | 11 ports (71 pins) |
| Interrupt sources | 15 (6 external, 9 internal) |
| Operating temperature range | -30 °C to 70 °C |
The device operates from 2.7 V to 5.5 V at 32.768 kHz and from 4.5 V to 5.5 V at 8 MHz.
It provides 15 interrupt sources, with 6 external and 9 internal sources.