h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 70

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
2.1.1
The differences between the H8S/2600 CPU and the H8S/2000 CPU are as shown below.
In addition, there are differences in address space, CCR and EXR register functions, power-down
modes, etc., depending on the model.
Rev. 3.00 Jan 25, 2006 page 18 of 872
REJ09B0286-0300
Two CPU operating modes
Power-down state
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
Instruction
MULXU
MULXS
16
32
Normal mode
Advanced mode
Transition to power-down state by SLEEP instruction
Selectable CPU clock speed
Differences between H8S/2600 CPU and H8S/2000 CPU
16-bit register-register multiply: 20 states (MULXU.W), 21 states (MULXS.W)
16-bit register-register divide: 20 states (DIVXU.W)
Mnemonic
MULXU.B Rs, Rd
MULXU.W Rs, ERd
MULXS.B Rs, Rd
MULXS.W Rs, ERd
4
H8S/2600
3
4
5
Execution States
H8S/2000
12
20
13
21