h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 80

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
2.1.2
The differences between the H8S/2600 CPU and the H8S/2000 CPU are shown below.
There are also differences in the address space, EXR register functions, power-down state, etc.,
depending on the product.
Rev. 4.00 Jun 06, 2006 page 26 of 1004
REJ09B0301-0400
High-speed operation
All frequently-used instructions execute in one or two states
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 differ as follows.
Instruction
MULXU
MULXS
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
600 ns
600 ns
1000 ns
1000 ns
H8S/2600
3
4
4
5
Number of Execution States
H8S/2000
13
12
20
21