H8SLASH3003 datasheet(35/715 Pages) RENESAS

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Section 2 CPU

2.1 Overview

The H8/300H CPU is a high-speed central processing unit with an internal 32-bit architecture that

is upward-compatible with the H8/300 CPU. The H8/300H CPU has sixteen 16-bit general

registers, can address a 16-Mbyte linear address space, and is ideal for realtime control.

2.1.1 Features

The H8/300H CPU has the following features.

•

Upward compatibility with H8/300 CPU

Can execute H8/300 series object programs without alteration

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General-register architecture

Sixteen 16-bit general registers (also usable as sixteen 8-bit registers or eight 32-bit registers)

•

Sixty-two basic instructions

— 8/16/32-bit arithmetic and logic instructions

— Multiply and divide instructions

— Powerful bit-manipulation instructions

•

Eight addressing modes

— Register direct [Rn]

— Register indirect [@ERn]

— Register indirect with displacement [@(d:16, ERn) or @(d:24, ERn)]

— Register indirect with post-increment or pre-decrement [@ERn+ or @–ERn]

— Absolute address [@aa:8, @aa:16, or @aa:24]

— Immediate [#xx:8, #xx:16, or #xx:32]

— Program-counter relative [@(d:8, PC) or @(d:16, PC)]

— Memory indirect [@@aa:8]

•

16-Mbyte linear address space

H8/3003 数据表(PDF) 35 Page - Renesas Technology Corp