Renesas R8C/18 Series Hardware Manual page 127

R8C/18 Group, R8C/19 Group
n = high level: the contents of TX register, low level: the contents of PREX register
FFFFh
n
0000h
1
TXS bit in
TXMR register
0
Measured pulse 1
(CNTR0i pin input)
0
1
IR bit in INT1IC
register
0
1
IR bit in TXIC
register
0
Conditions: "H" level width of measured pulse is measured. (R0EDG = 1)
i = 0 to 1
Figure 14.8 Operating Example in Pulse Width Measurement Mode
Rev.1.30 Apr 14, 2006
REJ09B0222-0130
Count start
Count stop
Set to 1 by program
Page 112 of 233
Underflow
Set to 0 when interrupt request is acknowledged, or set by program
Set to 0 when interrupt request is acknowledged, or set by program
14. Timers
Count stop
Count start
Period