HD6432646 Hitachi, HD6432646 Datasheet - Page 63
HD6432646
Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432646.pdf
(1155 pages)
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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 H8S/2646 Series.
2.1.4
In comparison to the H8/300H CPU, the H8S/2600 CPU has the following enhancements.
More general registers and control registers
Expanded address space
Enhanced addressing
Enhanced instructions
Higher speed
Additional control register
Enhanced instructions
Eight 16-bit expanded registers, and one 8-bit and two 32-bit control registers, have been
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
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.
One 8-bit and two 32-bit control registers have been added.
Addressing modes of bit-manipulation instructions have been enhanced.
A multiply-and-accumulate instruction has been added.
added.
space.
Differences from H8/300 CPU
Differences from H8/300H CPU
29
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