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HD64F2328VTE25 Datasheet, PDF (63/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents | |||
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Section 2 CPU
2.1.3 Differences from H8/300 CPU
In comparison to the H8/300 CPU, the H8S/2000 CPU has the following enhancements.
⢠More general registers and control registers
⯠Eight 16-bit expanded registers, and one 8-bit control register, have been added.
⢠Expanded address space
⯠Advanced mode supports a maximum 16-Mbyte address space.
⢠Enhanced addressing
⯠The addressing modes have been enhanced to make effective use of the 16-Mbyte address
space.
⢠Enhanced instructions
⯠Addressing modes of bit-manipulation instructions have been enhanced.
⯠Signed multiply and divide instructions have 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.
⢠Higher speed
⯠Basic instructions execute twice as fast.
2.1.4 Differences from H8/300H CPU
In comparison to the H8/300H CPU, the H8S/2000 CPU has the following enhancements.
⢠Additional control register
⯠One 8-bit control register has been added.
⢠Enhanced instructions
⯠Addressing modes of bit-manipulation instructions have been enhanced.
⯠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.
⢠Higher speed
⯠Basic instructions execute twice as fast.
Rev.7.00 Feb. 14, 2007 page 29 of 1108
REJ09B0089-0700
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