RV-4162 Datasheet, PDF (14/39 Pages) MICORO CRYSTAL SWITZERLAND – Ultra Small Real Time Clock

Micro Crystal
Ultra Small Real Time Clock / Calendar Module
RV-4162
Hour Alarm (address 0Ch…bits description)
Address
Function
Bit 7
Bit 6
0Ch
Hour Alarm
ARM3
0
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit
7
6
5 to 0
Symbol
ARM3
X
Hour alarm
Value
0/1
0
0 to 23
Description
Alarm repeat mode; See section 4.4
Unused; must be set to “0”
This register holds the hour alarm coded in BCD format
Bit 0
1
Minute Alarm (address 0Dh…bits description)
Address
Function
Bit 7
Bit 6
0Dh
Minute Alarm
ARM2
40
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit
7
6 to 0
Symbol
ARM2
Minute alarm
Value
0/1
0 to 59
Description
Alarm repeat mode; See section 4.4
This register holds the Minutes Alarm coded in BCD format
Bit 0
1
Second Alarm (address 0Eh…bits description)
Address
Function
Bit 7
Bit 6
0Eh
Second Alarm
ARM1
40
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit
7
6 to 0
Symbol
ARM1
Second alarm
Value
0/1
0 to 59
Description
Alarm repeat mode; See section 4.4
This register holds the second alarm coded in BCD format
Bit 0
1
Flags (address 0Fh…bits description)
Address
Function
0Fh
Flags
Bit 7
WDF
Bit 6
AF
Bit 5
0
Bit 4
0
Bit 3
0
Bit 2
OF
Bit 1
0
Bit 0
0
Bit
Symbol
7
WDF
6
AF
5 to 3 and 1 to 0 X
2
OF
Value
0
1
0
1
0
0
1
Description
No watchdog timer timeout error detected
Watchdog timer timeout error detected, an interrupt will be generated
No matching alarm condition detected
Alarm flag set when watch matches Alarm settings
If AIE = 1, an alarm interrupt will be generated
Unused; must be set to “0”
No oscillator failure timeout error detected
Oscillator failure timeout error detected
If OFIE = 1, an oscillator fail interrupt will be generated
1) _{WDF and AF are read only bits, will be automatically cleared when read.}
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