18. Flow-chart
RX8130CE
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ETM50E-07
Seiko Epson Corporation
57
18.6 The reading of the clock and calendar
Next process
Reading of the clock
Read clock
Please complete access within 0.95 seconds
The STOP bit holds "0".
(It causes the clock delay to set STOP bit to
“1”)
At the time of a communication start, the Clock & Calendar data are fixed
(hold the carry operation), and it is automatically revised at the time of the
communication end.
The access to a clock calendar recommends to have access to continuation
by a auto increment function.
Figure 44 Example flow (Clock, calendar reading)
18.7 Setting example of the wakeup timer interrupt function
Next process
Reg
1Ah,
1Bh
Set initial value of down counter.
Start count
Set TE bit to "1" to start timer interrupt function.
When start timers interrupt function, please surely set/reset
(*implement 2) initial value of down counter in advance.
Reg-1Eh
Select and set /IRQ output
Select a power supply condition of a count
1 Countdown is suspended with TSTP,
"
0
"
"
1
"
and countdown is
performed again with TSTP,
"
1
"
"
0
"
2 When you want to restart from a pre-set value, please set a TE bit to
“1”
again after setting a TE bit to
“0”.
Timer setting
Clear TE bit to
“0” to stop timer-interrupt function.
The countdown period is fixed by the combination of the TSEL2, TSEL1,
TSEL0 bit.
Clear TF bit to
“0” to cancel last timer interrupt output (/IRQ output).
Reg-1Ch
Reg-1Dh
Figure 45 Example flow (Wakeup timer interruption)
