Epson RX8130CE - The Reading of the Clock and Calendar; Setting Example of the Wakeup Timer Interrupt Function

18. Flow-chart
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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)