HD64F2168 Datasheet, PDF (56/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

• Two CPU operating modes
 Normal mode*
 Advanced mode
Note: * Not available in this LSI.
• Power-down state
 Transition to power-down state by SLEEP instruction
 Selectable CPU clock speed
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 as shown below.
• Register configuration
The MAC register is supported only by the H8S/2600 CPU.
• Basic instructions
The four instructions MAC, CLRMAC, LDMAC, and STMAC are supported only by the
H8S/2600 CPU.
• 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, power-down
modes, etc., depending on the model.
Rev. 3.00, 03/04, page 16 of 830