38K2 datasheet(227/358 Pages) RENESAS

Part #	38K2

Description	RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES

PDF	358 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

Logo

227 / 358 page

2.9 Watchdog timer

Rev.2.00

Oct 15, 2006

page 78 of 112

38K2 Group

REJ09B0338-0200

APPLICATION

2.9 Watchdog timer

This paragraph explains the registers setting method and the notes related to the watchdog timer.

2.9.1 Memory map

Fig. 2.9.1 Memory map of registers related to watchdog timer

2.9.2 Related registers

Fig. 2.9.2 Structure of Watchdog timer control register

003916

Watchdog timer control register (WDTCON)

003B16

CPU mode register (CPUM)

Watchdog timer control register

b7 b6 b5 b4 b3 b2 b1 b0

Function

At reset

Name

Watchdog timer control register (WDTCON) [Address : 3916]

Watchdog timer H (for read-out of high-order 6 bits)

STP instruction disable bit

0 : STP instruction enabled

1 : STP instruction disabled

Watchdog timer H count

source selection bit

0 : Watchdog timer L underflow

1 : System clock/16

38K2 Datasheet(PDF) 227 Page - Renesas Technology Corp