RV-8523 Datasheet, PDF (13/57 Pages) MICORO CRYSTAL SWITZERLAND – Real Time Clock

Micro Crystal
Real Time Clock / Calendar Module
RV-8523
8.3.3.HOURS (address 05h…bits description)
12 hour mode¹⁾
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
05h
Hours
X
X
AMPM
10
8
4
2
1
Bit
7 to 6
5
4 to 0
Symbol
X
AMPM
Hours
Value
-
0
1
1 to 12
1) _{Hour mode is set by bit 12_24 in register Control 1.}
24 hour mode¹⁾
Address
05h
Function
Hours
Bit 7
X
Description
Unused
Indicates AM
Indicates PM
This register holds the current hours in 12 hour mode coded in BCD format
Bit 6
X
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7 to 6
5 to 0
Symbol
X
Hours
Value
-
0 to 23
Description
Unused
This register holds the current hours in 24 hour mode coded in BCD format
1) _{Hour mode is set by bit 12_24 in register Control 1.}
8.3.4.DAYS (address 06h…bits description)
Address
06h
Function
Days
Bit 7
X
Bit 6
X
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7 to 6
5 to 0
Symbol
X
Days¹⁾
Value
-
1 to 31
Description
Unused
This register holds the current day coded in BCD format
1) _{If the year counter contains a value which is exactly divisible by 4 (including the year 00), the RV-8523 compensates for leap years by adding}
a 29^th day to February.
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