HD6432351 datasheet(567/1025 Pages) RENESAS

Part #	HD6432351

Description	16-Bit Single-Chip Microcomputer

PDF	1025 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 12 Watchdog Timer (WDT)

Rev. 3.00 Sep 15, 2006 page 533 of 988

REJ09B0330-0300

12.1.3

Pin Configuration

Table 12.1 describes the WDT output pin.

Table 12.1 WDT Pin

Name

Symbol

I/O

Function

Watchdog timer overflow

WDTOVF Output

Outputs counter overflow signal in watchdog

timer mode

12.1.4

The WDT has three registers, as summarized in table 12.2. These registers control clock selection,

WDT mode switching, and the reset signal.

Table 12.2 WDT Registers

Address*

Name

Abbreviation

R/W

Initial Value

Write*

Read

Timer control/status register

TCSR

R/(W)*

H'18

H'FFBC

Timer counter

TCNT

R/W

H'00

H'FFBC

H'FFBD

Reset control/status register

RSTCSR

R/(W)*

H'1F

H'FFBE

H'FFBF

Notes: 1. Lower 16 bits of the address.

2. For details of write operations, see section 12.2.4, Notes on Register Access.

3. Only a write of 0 is permitted to bit 7, to clear the flag.

HD6432351 Datasheet(PDF) 567 Page - Renesas Technology Corp

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