HD6432138SW datasheet(428/1061 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]

Direct Link	http://www.renesas.com

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Section 14 Watchdog Timer (WDT)

Rev. 4.00 Jun 06, 2006 page 374 of 1004

REJ09B0301-0400

14.1.3

Pin Configuration

Table 14.1 describes the WDT input pin.

Table 14.1

WDT Pin

Name

Symbol

I/O

Function

External subclock input pin

EXCL

Input

WDT1 prescaler counter input clock

14.1.4

The WDT has four registers, as summarized in table 14.2. These registers control clock selection,

WDT mode switching, the reset signal, etc.

Table 14.2

WDT Registers

Address*

Channel

Name

Abbreviation

R/W

Initial Value

Write*

Read

Timer control/status

TCSR0

R/(W)*

H'00

H'FFA8

Timer counter 0

TCNT0

R/W

H'00

H'FFA8

H'FFA9

Timer control/status

TCSR1

R/(W)*

H'00

H'FFEA

Timer counter 1

TCNT1

R/W

H'00

H'FFEA

H'FFEB

Common

System control

SYSCR

R/W

H'09

H'FFC4

Notes: 1. Lower 16 bits of the address.

2. For details of write operations, see section 14.2.4, Notes on Register Access.

3. Only 0 can be written in bit 7, to clear the flag.

HD6432138SW Datasheet(PDF) 428 Page - Renesas Technology Corp

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