R8C-22_1 Datasheet, PDF (179/549 Pages) Renesas Technology Corp – MCU R8C FAMILY / R8C/2x SERIES

R8C/22 Group, R8C/23 Group
14. Timers
TSTART bit in TRBCR ¹
register ₀
TOSSTF bit in TRBOCR ¹
register ₀
Set to 1 by program
Set to 1 by program
Set to 0 when
counting ends
INT0 pin input
Set to 1 by INT0 pin
input trigger
Count source
Timer RB prescaler
underflow signal
Count starts
Timer RB primary reloads
Count starts
Timer RB primary reloads
Counter of timer RB
01h
00h
01h
00h
01h
IR bit in TRBIC ¹
register ₀
TOPL bit in ¹
TRBIOC register ₀
Set to 0 by program
1
TRBIO pin output
0
Waveform output starts Waveform output ends
The above applies to the following conditions.
TRBPRE = 01h, TRBPR = 01h
TRBIOC register TOPL = 0, TOCNT = 0
INOSTG = 1 (INT0 one-shot trigger enabled)
INOSEG = 1 (edge trigger at rising edge)
Set to 0 when interrupt request is
acknowledged, or set by program
Waveform output starts Waveform output ends
Figure 14.22 Operation Example of Programmable One-Shot Generation Mode
Rev.2.00 Aug 20, 2008 Page 159 of 501
REJ09B0251-0200