Section 2 CPU
Rev. 1.00 Apr. 28, 2008 Page 29 of 994
REJ09B0452-0100
Section 2 CPU
The H8S/2600 CPU is a high-speed central processing unit with an internal 32-bit architecture that
is upward-compatible with the H8/300 and H8/300H CPUs. The H8S/2600 CPU has sixteen 16-bit
general registers, can address a 16-Mbyte linear address space, and is ideal for realtime control.
This section describes the H8S/2600 CPU. The usable modes and address spaces differ depending
on the product. For details on each product, refer to section 3, MCU Operating Modes.
2.1 Features
•
Upward-compatible with H8/300 and H8/300H CPUs
Can execute H8/300 and H8/300H CPUs object programs
•
General-register architecture
Sixteen 16-bit general registers also usable as sixteen 8-bit registers or eight 32-bit registers
•
Sixty-nine basic instructions
8/16/32-bit arithmetic and logic instructions
Multiply and divide instructions
Powerful bit-manipulation instructions
Multiply-and-accumulate instruction
•
Eight addressing modes
Register direct [Rn]
Register indirect [@ERn]
Register indirect with displacement [@(d:16,ERn) or @(d:32,ERn)]
Register indirect with post-increment or pre-decrement [@ERn+ or @–ERn]
Absolute address [@aa:8, @aa:16, @aa:24, or @aa:32]
Immediate [#xx:8, #xx:16, or #xx:32]
Program-counter relative [@(d:8,PC) or @(d:16,PC)]
Memory indirect [@@aa:8]
•
16-Mbyte address space
Program: 16 Mbytes
Data:
16 Mbytes
•
High-speed operation
All frequently-used instructions execute in one or two states
8/16/32-bit register-register add/subtract: 1 state
8
×
8-bit register-register multiply: 2 states
Содержание H8S/2100 Series
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