H8/3004 Просмотр технического описания (PDF) - Renesas Electronics

Номер в каталоге

Компоненты Описание

производитель

H8/3004

Microcomputer

Renesas Electronics 

Data Type

General

Register Data Format

Word data

Rn

15

0

MSB

LSB

15

0

Word data

En

MSB

LSB

31

16 15

0

Longword data ERn

MSB

LSB

Legend

ERn: General register

En: General register E

Rn: General register R

RnH: General register RH

RnL: General register RL

MSB: Most significant bit

LSB: Least significant bit

Figure 2-7 General Register Data Formats (2)

2.5.2 Memory Data Formats

Figure 2-8 shows the data formats on memory. The H8/300H CPU can access word data and

longword data on memory, but word or longword data must begin at an even address. If an attempt

is made to access word or longword data at an odd address, no address error occurs but the least

significant bit of the address is regarded as 0, so the access starts at the preceding address. This

also applies to instruction fetches.

22

Share Link: