HD64F36022 datasheet(174/384 Pages) RENESAS

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HD64F36022 Datasheet(PDF) 174 Page - Renesas Technology Corp

Part #	HD64F36022

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

PDF	384 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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174 / 384 page

Section 11 Timer W

Rev. 4.00 Sep. 23, 2005 Page 148 of 354

REJ09B0025-0400

11.4

Operation

The timer W has the following operating modes.

• Normal Operation

• PWM Operation

11.4.1

Normal Operation

TCNT performs free-running or periodic counting operations. After a reset, TCNT is set as a free-

running counter. When the CTS bit in TMRW is set to 1, TCNT starts incrementing the count.

When the count overflows from H'FFFF to H'0000, the OVF flag in TSRW is set to 1. If the OVIE

in TIERW is set to 1, an interrupt request is generated. Figure 11.2 shows free-running counting.

TCNT value

H'FFFF

H'0000

CTS bit

OVF

Time

Flag cleared

by software

Figure 11.2 Free-Running Counter Operation

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