R27 datasheet(187/487 Pages) RENESAS

Part #	R27

Description	RENESAS 16-BIT SINGLE-CHIP MCU R8C FAMILY / R8C/2x SERIES

PDF	487 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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187 / 487 page

R8C/26 Group, R8C/27 Group

14. Timers

Rev.2.10

Sep 26, 2008

Page 168 of 453

REJ09B0278-0210

Figure 14.19

Operating Example of Timer RB in Programmable Waveform Generation Mode

IR bit in TRBIC

Count source

Timer RB prescaler

underflow signal

Counter of timer RB

TRBO pin output

TOPL bit in TRBIO

Set to 1 by program

Set to 0 when interrupt

request is acknowledged,

or set by program.

The above applies under the following conditions.

TSTART bit in TRBCR

01h

00h

02h

Timer RB secondary reloads

Timer RB primary reloads

Set to 0 by program

TRBPRE = 01h, TRBPR = 01h, TRBSC = 02h

TRBIOC register TOCNT = 0 (timer RB waveform is output from the TRBO pin)

02h

01h

00h

01h

00h

Primary period

Secondary period

Waveform

output starts

Waveform output inverted

Waveform output starts

Initial output is the same level

as during secondary period.

R27 Datasheet(PDF) 187 Page - Renesas Technology Corp

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