HD6413007F20 Datasheet, PDF(141/798 Page) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

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HD6413007F20 Datasheet, PDF (141/798 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

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6. Bus Controller

6.1.4 Register Configuration

Table 6.2 summarizes the bus controller's registers.

Table 6.2 Bus Controller Registers

Address*1 Name

Abbreviation

H'EE020

Bus width control register

ABWCR

H'EE021

Access state control register

ASTCR

H'EE022

Wait control register H

WCRH

H'EE023

Wait control register L

WCRL

H'EE013

Bus release control register

BRCR

H'EE01F

Chip select control register

CSCR

H'EE024

Bus control register

BCR

H'EE026

DRAM control register A

DRCRA

H'EE027

DRAM control register B

DRCRB

H'EE028

Refresh timer control/status register RTMCSR

H'EE029

Refresh timer counter

RTCNT

H'EE02A

Refresh time constant register

RTCOR

Notes: 1. Lower 20 bits of the address in advanced mode.

2. In modes 2 and 4, the initial value is H'00.

3. In modes 3 and 4, the initial value is H'EE.

4. For Bit 7, only 0 can be written to clear the flag.

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/(W)*4

R/W

R/W

Initial Value

H'FF*2

H'FF

H'FF

H'FF

H'FE*3

H'0F

H'C6

H'10

H'08

H'07

H'00

H'FF

Rev.5.00 Sep. 12, 2007 Page 111 of 764

REJ09B0396-0500

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