H8/3656 Ver la hoja de datos (PDF) - Renesas Electronics

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H8/3656

single-chip microcomputers

Renesas Electronics 

Section 1 Overview

1.1 Overview

The H8/300L Series is a series of single-chip microcomputers (MCU: microcomputer unit), built

around the high-speed H8/300L CPU and equipped with peripheral system functions on-chip.

Within the H8/300L Series, the H8/3657 Series of microcomputers are equipped with a UART

(Universal Asynchronous Receiver/Transmitter). Other on-chip peripheral functions include five

timers, a 14-bit pulse width modulator (PWM), two serial communication interface channels, and an

A/D converter. Together, these functions make the H8/3657 Series ideally suited for embedded

applications in advanced control systems. The ZTATTM* versions of the H8/3657 come with user-

programmable PROM. Table 1 summarizes the features of the H8/3657 Series..

Table 1 summarizes the features of the H8/3657 Series.

Note: * ZTAT is a trademark of Hitachi, Ltd.

Table 1-1 Features

Item

CPU

Description

High-speed H8/300L CPU

• General-register architecture

General registers: Sixteen 8-bit registers (can be used as eight 16-bit

registers)

• Operating speed

— Max. operating speed: 5 MHz

— Add/subtract: 0.4 µs (operating at 5 MHz)

— Multiply/divide: 2.8 µs (operating at 5 MHz)

— Can run on 32.768 kHz subclock

• Instruction set compatible with H8/300 CPU

— Instruction length of 2 bytes or 4 bytes

— Basic arithmetic operations between registers

— MOV instruction for data transfer between memory and registers

• Typical instructions

— Multiply (8 bits × 8 bits)

— Divide (16 bits ÷ 8 bits)

— Bit accumulator

— Register-indirect designation of bit position

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