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RV-8564 数据表(PDF) 13 Page - MICORO CRYSTAL SWITZERLAND

部件名 RV-8564
功能描述  I2C-Bus Interface Real Time Clock
PDF  40 Pages
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制造商  MICROCRYSTAL [MICORO CRYSTAL SWITZERLAND]
网页  http://www.microcrystal.com
标志 MICROCRYSTAL - MICORO CRYSTAL SWITZERLAND

RV-8564 数据表(HTML) 13 Page - MICORO CRYSTAL SWITZERLAND

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Micro Crystal
Real Time Clock / Calendar Module
RV-8564
13/40
8.3.7.YEARS (address 08h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
08h
Years
80
40
20
10
8
4
2
1
Bit
Symbol
Value
Description
7 to 0
Years
0 to 99
This register holds the current year coded in BCD format
1)
1) When the register Years overflows from 99 to 00, the century bit C in the register Months is toggled.
Note:
The RV-8564 compensates for leap years by adding a 29
th day to February if the year counter contains a value
which is divisible by 4, including 00.
8.4.
ALARM REGISTERS
8.4.1.MINUTE ALARM (address 09h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
09h
Minute Alarm
AE_M
40
20
10
8
4
2
1
Bit
Symbol
Value
Description
7
AE_M
0
Minute Alarm in enabled
1
1)
Minute Alarm is disabled
6 to 0
Minute Alarm
0 to 59
Minute Alarm information coded in BCD format
1) Default value.
8.4.2.HOUR ALARM (address 0Ah…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0Ah
Hour Alarm
AE_H
X
20
10
8
4
2
1
Bit
Symbol
Value
Description
7
AE_H
0
Hour Alarm in enabled
1
1)
Hour Alarm is disabled
6
X
-
Unused
5 to 0
Hour Alarm
0 to 23
Hour Alarm information coded in BCD format
1) Default value.
8.4.3.DAY ALARM (address 0Bh…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0Bh
Day Alarm
AE_D
X
20
10
8
4
2
1
Bit
Symbol
Value
Description
7
AE_D
0
Day Alarm in enabled
1
1)
Day Alarm is disabled
6
X
-
Unused
5 to 0
Day Alarm
1 to 31
Day Alarm information coded in BCD format
1) Default value.



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