RX8111CE
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ETM61E-01
Table 21 TBKON, TBKE bit (Timer Backup ON, Timer Backup/normal Enable)
operation
TBKE
TBKON
Description
Write
0
X
This setting counts normal mode and backup mode.
1
0
This setting counts it at time of normal mode(V
DD
operation)
1
This setting counts it at time of backup mode (V
BAT
operation)
7) TMPIN bit
(Timer PIN)
FOUT terminal can be allocate as wake-up timer interrupt output. To use wake-up timer interrupt output, FSEL1,0 should be (0,0)
because this output has logical OR output of FOUT and wake-up timer interrupt.
Table 22 TMPIN bit (Timer PIN)
TMPIN
Data
Description
Write
0
FOUT terminal works as /INT of wake-up timer interrupt.
1
Normal FOUT port
8) TSTP bit
(Timer Stop)
This bit is used to stop wake-up timer count down.
Table 23 TSTP bit (Timer Stop)
TE
STOP
TBKE
TSTP
Description
1
0
0
0
Writing a "0" to this bit cancels stop status (restarts timer
counts down).
The reopening value of the countdown is a stopping value
1
Count stops.
1
X
Setting of TSTP value becomes invalid, and the
count does not stop even if set it in TSTP = "1".
1
X
X
The count stops at the time of the setting of 64 Hz,
1 Hz,1/60 Hz.
0
X
X
X
It doesn’t start counting
14.2.2. Wake-up timer start timing
Counting down of the fixed-cycle timer value starts at the rising edge of the SCL (ACK output) signal that occurs when the TE value
is changed from "0" to "1".
TSEL0
TE
ECP TSEL1
Count down
/INT pin
SDA(Master
）
SCL
Internal timer
WADA
SDA(Slave
）
ACK
Figure 19 Wake-up timer start sequence
