Differences Between H8S/2600 Cpu And H8S/2000 Cpu - Renesas H8S/2158 User Manual

Section 2 CPU
 16 × 16-bit register-register multiply: 20 states (MULXU.W), 21 states (MULXS.W)
 32 ÷ 16-bit register-register divide: 20 states (DIVXU.W)
• Two CPU operating modes
 Normal mode
 Advanced mode
• 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
Instruction
MULXU
MULXS
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
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