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R8C/20 Datasheet(PDF) 162 Page - Renesas Technology Corp

Part # R8C/20
Description  MCU R8C FAMILY / R8C/2x SERIES
PDF  501 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R8C/20 Datasheet(HTML) 162 Page - Renesas Technology Corp

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R8C/20 Group, R8C/21 Group
14. Timers
Rev.2.00 Aug 27, 2008
Page 146 of 458
REJ09B0250-0200
Figure 14.20
Operation Example of Timer RB in Programmable Waveform Generation Mode
1
0
1
0
IR bit in TRBIC
register
1
0
Count source
Timer RB prescaler
underflow signal
Counter of timer RB
TRBO pin output
TOPL bit in TRBIO
register
Set to 1 by program
Set to 0 when interrupt
request is acknowledged,
or set by program
The above applies to the following conditions.
TSTART bit in TRBCR
register
1
0
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
Primary period
Secondary period
Waveform output starts
Waveform output inverts
Waveform output starts
Initial output is the same level
as during secondary period.



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