h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 86

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
Note: * Not available in the chip.
2.1.2
Instruction
MULXU
MULXS
Rev. 6.00 Feb 22, 2005 page 26 of 1484
REJ09B0103-0600
The differences between the H8S/2600 CPU and the H8S/2000 CPU are as shown below.
High-speed operation
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.
Number of execution states
The number of execution states of the MULXU and MULXS instructions is different in each
CPU.
All frequently-used instructions execute in one or two states
Maximum clock rate
8/16/32-bit register-register add/subtract : 50 ns
8
16 ÷ 8-bit register-register divide
16
32 ÷ 16-bit register-register divide
Normal mode *
Advanced mode
Transition to power-down state by SLEEP instruction
CPU clock speed selection
Differences between H8S/2600 CPU and H8S/2000 CPU
8-bit register-register multiply
16-bit register-register multiply
Mnemonic
MULXU.B Rs, Rd
MULXU.W Rs, ERd
MULXS.B Rs, Rd
MULXS.W Rs, ERd
: 20 MHz
: 150 ns
: 600 ns
: 200 ns
: 1000 ns
H8S/2600
4
4
5
3
Execution States
H8S/2000
20
13
21
12