h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 87

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

In addition, there are differences in address space, CCR and EXR register functions, power-down
modes, etc., depending on the model.
2.1.3
In comparison to the H8/300 CPU, the H8S/2600 CPU has the following enhancements.
Note: * Not available in the chip.
More general registers and control registers
Expanded address space
Enhanced addressing
Enhanced instructions
Higher speed
Eight 16-bit expanded registers, and one 8-bit and two 32-bit control registers, have been
added
Normal mode * supports the same 64-kbyte address space as the H8/300 CPU
Advanced mode supports a maximum 16-Mbyte address space
The addressing modes have been enhanced to make effective use of the 16-Mbyte address
space
Addressing modes of bit-manipulation instructions have been enhanced
Signed multiply and divide instructions have been added
A multiply-and-accumulate instruction has been added
Two-bit shift instructions have been added
Instructions for saving and restoring multiple registers have been added
A test and set instruction has been added
Basic instructions execute twice as fast
Differences from H8/300 CPU
Rev. 6.00 Feb 22, 2005 page 27 of 1484
REJ09B0103-0600
Section 2 CPU