H838024 datasheet(350/697 Pages) RENESAS

Part #	H838024

Description	Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series

PDF	697 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 9 Timers

Rev. 7.00 Mar 10, 2005 page 308 of 652

REJ09B0042-0700

Port Mode Register 2 (PMR2)

Bit

—

POF1

—

WDCKS

NCS

IRQ0

Initial value

Read/Write

—

R/W

—

R/W

PMR2 is an 8-bit read/write register, mainly controlling the selection of pin functions for port 2.

Only the bit relating to the watchdog timer is described here. For details of the other bits, see

section 8, I/O Ports.

Bit 2—Watchdog Timer Source Clock Select (WDCKS)

This bit selects the watchdog timer source clock. Note that stabilization times for the H8/38024,

H8/38024S, and H8/38024R Group and for the H8/38124 Group are different.

• H8/38024, H8/38024S, H8/38024R Group

WDCKS

Description

φ/8192 selected

(initial value)

φw/32 selected

• H8/38124 Group

WDCKS

Description

Selects clock based on timer mode register W (TMW) setting

(initial value)

φw/32 selected

H838024 Datasheet(PDF) 350 Page - Renesas Technology Corp