RV-8523 Datasheet, PDF (16/57 Pages) MICORO CRYSTAL SWITZERLAND – Real Time Clock

Micro Crystal
Real Time Clock / Calendar Module
24 hour mode¹⁾
Address
0Bh
Function
Hour Alarm
RV-8523
Bit 7
AE_H
Bit 6
X
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7
6
5 to 0
Symbol
AE_H
X
Hour Alarm
Value
0
1²⁾
-
0 to 23
Description
Hour Alarm in enabled
Hour Alarm is disabled
Unused
Hour Alarm information in 24 hour mode coded in BCD format
1) _{Hour mode is set by bit 12_24 in register Control 1.}
2) _{Default value.}
8.4.3.DAY ALARM (address 0Ch…bits description)
Address
0Ch
Function
Day Alarm
Bit 7
AE_D
Bit 6
X
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7
6
5 to 0
Symbol
AE_D
X
Day Alarm
Value
0
1¹⁾
-
1 to 31
Description
Day Alarm in enabled
Day Alarm is disabled
Unused
Day Alarm information coded in BCD format
1) _{Default value.}
8.4.4.WEEKDAY ALARM (address 0Dh…bits description)
Address
0Dh
Function
Weekday Alarm
Bit 7
AE_W
Bit 6
X
Bit 5
X
Bit 4
X
Bit 3
X
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7
6 to 3
2 to 0
Symbol
AE_W
X
Weekday Alarm
Value
0
1¹⁾
-
0 to 6
Description
Weekday Alarm in enabled
Weekday Alarm is disabled
Unused
Weekday Alarm information
1) _{Default value.}
8.5. FREQUENCY OFFSET REGISTER
The RV-8523 incorporates an offset register (address 0Eh), which can be used to implement several functions,
like:
• Aging adjustment
• Temperature compensation
• Accuracy tuning
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