H8SLASH3028F datasheet(48/923 Pages) RENESAS

48 / 923 page

Rev. 2.00, 09/03, page 18 of 890

• High-speed operation

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

 Maximum clock frequency:

25 MHz

 8/16/32-bit register-register add/subtract: 80 ns

 8 × 8-bit register-register multiply:

560 ns

 16 ÷ 8-bit register-register divide:

560 ns

 16 × 16-bit register-register multiply:

880 ns

 32 ÷ 16-bit register-register divide:

880 ns

• 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.

H8/3028F Datasheet(PDF) 48 Page - Renesas Technology Corp