HD6432138SW datasheet(193/1061 Pages) RENESAS

Part #	HD6432138SW

Description	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1061 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 6 Bus Controller

Rev. 4.00 Jun 06, 2006 page 139 of 1004

REJ09B0301-0400

6.1.3

Pin Configuration

Table 6.1 summarizes the pins of the bus controller.

Table 6.1

Bus Controller Pins

Name

Symbol

I/O

Function

Address strobe

Output

Strobe signal indicating that address output on

address bus is enabled (when IOSE bit is 0)

I/O select

IOS

Output

I/O select signal (when IOSE bit is 1)

Read

Output

Strobe signal indicating that external space is

being read

Write

Output

Strobe signal indicating that external space is

being written to, and that data bus is enabled

Wait

WAIT

Input

Wait request signal when external 3-state access

space is accessed

6.1.4

Table 6.2 summarizes the registers of the bus controller.

Table 6.2

Bus Controller Registers

Name

Abbreviation

R/W

Initial Value

Address*

Bus control register

BCR

R/W

H'D7

H'FFC6

Wait state control register

WSCR

R/W

H'33

H'FFC7

Note:

Lower 16 bits of the address.

HD6432138SW Datasheet(PDF) 193 Page - Renesas Technology Corp

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