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HD6413003TF10 Datasheet, PDF (37/717 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents | |||
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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
⢠General-register architecture
Sixteen 16-bit general registers (also usable as sixteen 8-bit registers or eight 32-bit registers)
⢠Sixty-two basic instructions
â 8/16/32-bit arithmetic and logic instructions
â Multiply and divide instructions
â Powerful bit-manipulation instructions
⢠Eight addressing modes
â Register direct [Rn]
â Register indirect [@ERn]
â Register indirect with displacement [@(d:16, ERn) or @(d:24, ERn)]
â Register indirect with post-increment or pre-decrement [@ERn+ or @âERn]
â Absolute address [@aa:8, @aa:16, or @aa:24]
â Immediate [#xx:8, #xx:16, or #xx:32]
â Program-counter relative [@(d:8, PC) or @(d:16, PC)]
â Memory indirect [@@aa:8]
⢠16-Mbyte linear address space
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