Wakeup Timer Start Timing; Wakeup Timer Interrupt Interval (Example) - Epson RX8010SJ Applications Manual

7) TSTP bit ( Timer Stop )
This bit is used to stop wakeup timer count down.
operation
Write
8) TMPIN bit
Select the destination of the timer interrupt output signal.(/IRQ1 or /IRQ2)
TMPIN
Write

13.2.2. Wakeup timer start timing

Counting down of the wakeup 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".
SCL
SDA(Master）
SDA (Slave）
Internal timer
/ IRQ1,2 pin

13.2.3. Wakeup timer interrupt interval (example)

The combination of the source clock settings and wakeup timer countdown setting sets interrupt interval, as shown in
the following examples.
Timer Counter
setting
1  65535
0
1
•
•
410
•
•
3840
•
•
4096
•
•
65535
RX8010SJ
ETM37E-07
STOP TSTP
0
0
1
1 X
Data
0 /IRQ2 pin
1 /IRQ1 pin
TE
WADA
TSEL2
A
1
4096 Hz 64 Hz
TSEL2 = 0 TSEL2 = 0
TSEL1, 0 = 0, 0 TSEL1, 0 = 0, 1
−
244.14 s
15.625 ms
•
•
100.10 ms 6.406 s
•
•
0.9375 s 60.000 s
•
•
1.0000 s 64.000 s
•
•
15.9998 s 1023.984 s
Seiko Epson Corporation
Writing a "0" to this bit cancels stop status (restarts timer count
down).
The reopening value of the countdown is a stopping value
Count stops.
The count stops at the time of the setting of 64Hz,
1Hz,1/60Hz,1/3600Hz.
Description
TSEL1 TSEL0
ACK
Count down
Source clock
1 Hz
TSEL2 = 0
TSEL1, 0 = 1, 0
− −
1 s
• •
• •
410 s
• •
• •
3840 s
• •
• •
4096 s
• •
• •
65535 s
13. How to use
Description
1 / 60 Hz 1 / 3600 Hz
TSEL2 = 0 TSEL2 = 1
TSEL1, 0 = 1, 1 TSEL1, 0 = 0, 0
−
1 min
•
•
410 min 410 h
•
•
3840 min 3840 h
•
•
4096 min 4096 h
•
•
65535 min 65535 h
−
1 h
•
•
•
•
•
•
•
•
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