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•
Two CPU operating modes
Normal mode*
Advanced mode
•
Power-down state
Transition to power-down state by the SLEEP instruction
CPU clock speed selection
Note:* Normal mode is not available in this LSI.
2.1.1
Differences between H8S/2600 CPU and H8S/2000 CPU
The differences between the H8S/2600 CPU and the H8S/2000 CPU are shown below.
•
Register configuration
The MAC register is supported by the H8S/2600 CPU only.
•
Basic instructions
The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported by the H8S/2600
CPU only.
•
The number of execution states of the MULXU and MULXS instructions;
Execution
States
Instruction Mnemonic H8S/2600 H8S/2000
MULXU
MULXU.B Rs, Rd
3
12
MULXU.W Rs, ERd
4
20
MULXS
MULXS.B Rs, Rd
4
13
MULXS.W Rs, ERd
5
21
In addition, there are differences in address space, CCR and EXR register functions, and power-
down modes, etc., depending on the model.
Содержание H8S/2627
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