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ETM62E-02 Seiko Epson Corporation 32
14.3. Alarm Interrupt Function
.
14.3.1. Related Registers for Alarm Interrupt Functions.
Table 28 Alarm Interrupt Registers
alarm interrupt event
can be used as a RAM register. In such cases, be
sure to write 0 to the AIE bit. When the AIE bit value is 1 and the Alarm registers is being used as a RAM register, /INT may
be changed to low level unintentionally.
1) Alarm registers
The second, minute, hour, day and date when an alarm interrupt event will occur is set using this register and
the WADA bit.
In the WEEK alarm /Day alarm register, the setting selected via the WADA bit determines whether WEEK alarm data or
DAY alarm data will be set. If WEEK has been selected via the WADA bit, multiple days can be set (such as Monday,
Wednesday, Friday, Saturday)
1, the day will be ignored, and an interrupt occurs ones the actual time
matches the seconds, minutes and hour setting of the alarm register.
(Example) Write 80h (AE = 1) to the WEEK Alarm / DAY Alarm register (Reg - 9h):
Only the
2) WADA bit(Week Alarm / Day Alarm Select)
The alarm interrupt function uses either "Day" or "Week" as its target. The WADA bit is used to specify either WEEK or
DAY as the target for alarm interrupt events.
Table 29 WADA bit (Week Alarm / Day Alarm Select)
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