Flow Charts - Epson RX-8564LC Applications Manual

RX 8564 LC

13.5. Flow Charts

The flow charts shown below are intended as examples only.
These examples are written to be easily understood, and therefore they may not be as efficient as the actual
processing.
Ways to boost processing efficiency include setting several processes as parallel processes and changing the
sequence of operations in areas where it does not create any problems. (Some of the processing described here
may not be necessary under certain use conditions.)
To ensure that operations are as expected, make adjustments according to the use conditions (use environment).
1) Initialization example
Initialization
Initialize Control 1
register
Initialize Control 2
register
Set current time
Set alarm interrupt
Set CLKOUT output
Set timer interrupt
Go to next process
2) Example of initial power-on processing
Initial power-on
processing
Wait
Initialization
To next process
Initialize the Control 1 register. (Reg-00[h])
Be sure to write "0" to the two TEST bits.
Initialize the Control 2 register. (Reg-01[h])
Write "0" to the AIE and TIE bits to prevent output of unintended interrupts.
Set "[Year/Month/Day [day of week] hour:minute:second]. (Reg-02[h] to
08[h])
For current time setting, refer to "Write to clock and calendar" below.
Set the alarm interrupt function. (Reg-09[h] to 0C[h])
(If the alarm interrupt function is not being used, we recommend writing "1"
to all four AE bits.)
Set the CLKOUT output pin's output status. (Reg-0D[h])
(Since the initial power-on setting is "output 32.768 kHz clock", write "0" to
the FE bit to stop output.)
Set the timer interrupt function. (Reg-0E[h] to 0F[h])
(If the timer interrupt function is not used, write "0" to the TE bit.)
The address auto increment function can be used to set continuous writing
from Reg - 00[h] to 0F[h] during initialization.
In such cases, be sure to write "1" to the STOP bit (to stop the clock) before
starting the continuous write operation, and write "0" to the STOP bit (to
start the clock) once initialization is completed.
Wait until the internal crystal oscillator has begun to oscillate.
(This wait time should be about one second. For details, refer to the
regulation for the oscillation start time t
Be sure to initialize all registers.
(For further description of initialization, see "Initialization" below.)
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