This document describes the features and characteristics of Hitachi's 16-bit single-chip microcomputer H8S/2678 series, including H8S/2678R series, H8S/2676, HD64F2676, H8S/2675, HD6432675, H8S/2674R, HD6412674R, H8S/2673, HD6432673, and H8S/2670.
This hardware manual describes the H8S/2678 and H8S/2678R microcontroller series, which are built around the H8S/2600 CPU core. It is intended for designers who need to understand the chip's architecture, peripheral modules, and electrical specifications.
The document covers CPU and system‑control modules, on‑chip peripherals such as timers, DMA, A/D and D/A converters, and provides a complete list of registers, pin descriptions, usage notes and electrical characteristics needed for system design.