This document describes the features of Mitsubishi Microcomputers' 7470/7471 series microcontrollers. They are designed with CMOS silicon gate technology and are suitable for business equipment and consumer applications. These microcontrollers have a simple instruction set and the same memory map for easy programming.
The 7470/7471 Group is a family of single‑chip 8‑bit CMOS microcomputers designed with CMOS silicon‑gate technology. They are offered in 32‑pin DIP, 42‑pin DIP and 56‑pin QFP packages and are intended for business equipment and other consumer applications.
Key specifications include ROM sizes from 4 KB to 16 KB, RAM up to 384 bytes, multiple 8‑bit and 4‑bit I/O ports, an 8‑bit A/D converter (4 or 8 channels depending on the variant), a minimum instruction execution time of 0.5 µs at 8 MHz, power‑supply voltage from 2.7 V to 5.5 V, and a power dissipation of 35 mW at 8 MHz. The device operates from –20 °C to 85 °C.
| ROM size (M37470M2) | 4096 bytes |
|---|---|
| RAM size (M37471M2) | 128 bytes |
| Clock input oscillation frequency (max) | 8 MHz |
| A/D converter channels | 8‑bit, 8 channels (7471) / 4 channels (7470) |
| Operating temperature range | -20 °C to 85 °C |