This document is the hardware manual for the Renesas H8SX/1600 series H8SX/1657 R5F61657 32-bit CISC microcomputer, which describes the features and characteristics of the product.
This hardware manual describes the Renesas H8SX/1657 single‑chip microcomputer, which features a 32‑bit CISC H8SX CPU core and a range of on‑chip peripherals. It is intended for designers who need to understand the chip’s functional modules, register set and electrical specifications.
The document includes safety precautions, handling guidelines, a description of functional modules such as the CPU, system‑control and peripheral blocks, a complete list of registers, and electrical characteristic tables to aid in circuit design and system integration.
| CPU core | 32‑bit CISC H8SX |
|---|---|
| Series | H8SX/1600 |
| Model | H8SX/1657 |
Do not connect anything to the NC pins.
Fix all unused input pins to a high or low level.
The product's state is undefined until full power is supplied and a low level is applied to the reset pin.