Epson RX8130CE - Page 35

14. Functions
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ETM50E-07 Seiko Epson Corporation 34
2) Example of alarm settings when "Day" has been specified (and WADA bit="1")
Table 27 DAY alarm example
Day is specified
WADA bit = "1"
Day Alarm
HOUR
Alarm
IN
Alarm
bit
7
AE
bit
6

bit
5
20
bit
4
10
bit
3
08
bit
2
04
bit
1
02
bit
0
01
First of each month, at 7:00 AM
 Minute value is ignored
0
0
0
0
0
0
0
1
07 h
AE bit = 1
15
th
of each month, for 30 minutes each
hour  Hour value is ignored
0
0
0
1
0
1
0
1
AE bit = 1
30 h
Every day, at 6:59 PM
1







18 h
59 h
: Don't care
14.3.3. Diagram of alarm interrupt function
Figure 22 Alarm interrupt inner block diagram
AIE bit
/IRQ output
AF bit
Event
occurs
"1"
"0"
Hi-z
"L"
"1"
"0"
Internal operation
Write operation
Figure 23 Alarm Interrupt time chart
Internal minute carry
AF Flag
AIE
/IRQ
MIN detection result
AF ( “0” clear )
MIN AE
HOUR AE
WEEK / DAY AE
HOUR detection result
WEEK detection result
DAY detection result
0
1
WADA