Differences Between H8S/2600 Cpu And H8S/2000 Cpu; Section 2 Cpu - Hitachi H8S/2628 Hardware Manual

• 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;
Instruction
MULXU
MULXS
In addition, there are differences in address space, CCR and EXR register functions, and power-
down modes, etc., depending on the model.
Rev. 1.0, 09/02, page 10 of 568
Mnemonic
MULXU.B Rs, Rd
MULXU.W Rs, ERd
MULXS.B Rs, Rd
MULXS.W Rs, ERd
Execution States
H8S/2600
3
4
4
5
H8S/2000
12
20
13
21