H83065 datasheet(46/963 Pages) RENESAS

46 / 963 page

Section 2 CPU

Rev. 4.00 Jan 26, 2006 page 24 of 938

REJ09B0276-0400

• High-speed operation

 All frequently-used instructions execute in two to four states

 Maximum clock frequency:

20 MHz

 8/16/32-bit register-register add/subtract: 100 ns

 8 × 8-bit register-register multiply:

700 ns

 16 ÷ 8-bit register-register divide:

700 ns

 16 × 16-bit register-register multiply: 1.1 µs

 32 ÷ 16-bit register-register divide:

1.1 µs

• Two CPU operating modes

 Normal mode

 Advanced mode

• Low-power mode

Transition to power-down state by SLEEP instruction

2.1.2

Differences from H8/300 CPU

In comparison to the H8/300 CPU, the H8/300H has the following enhancements.

• More general registers

Eight 16-bit registers have been added.

• Expanded address space

 Advanced mode supports a maximum 16-Mbyte address space.

 Normal mode supports the same 64-kbyte address space as the H8/300 CPU.

• Enhanced addressing

The addressing modes have been enhanced to make effective use of the 16-Mbyte address

space.

• Enhanced instructions

 Data transfer, arithmetic, and logic instructions can operate on 32-bit data.

 Signed multiply/divide instructions and other instructions have been added.

H83065 Datasheet(PDF) 46 Page - Renesas Technology Corp