M30620FCAFP datasheet(474/615 Pages) RENESAS

Part #	M30620FCAFP

Description	16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

PDF	615 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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474 / 615 page

Watchdog Timer

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-157

Reserved bit

Must always be set to “0”

Watchdog timer control register [Address 000F16]

WDC

Setting watchdog timer control register

Setting watchdog timer start register

The watchdog timer is initialized and starts counting with a write instruction to

this register. The watchdog timer value is always initialized to “7FFF16”

regardless of the value written.

Watchdog timer start register [Address 000E16]

WDTS

Clearing the protect

Enables writing to processor mode registers 0 and 1

(addresses 000416 and 000516)

1 : Write-enabled

Protect register [Address 000A16]

PRCR

Generating watchdog

timer interrupt

Prescaler select bit

0 : Divided by 16

1 : Divided by 128

Software reset

Software reset bit

The device is reset when this bit is set to “1”. The value of this bit

is “0” when read.

Processor mode register 0 [Address 000416]

PM0

Figure 2.11.4. Set-up procedure of watchdog timer

M30620FCAFP Datasheet(PDF) 474 Page - Renesas Technology Corp