RV-4162 Datasheet, PDF (12/39 Pages) MICORO CRYSTAL SWITZERLAND – Ultra Small Real Time Clock

Micro Crystal
Ultra Small Real Time Clock / Calendar Module
RV-4162
Day (address 04h…bits description)
Address
Function
04h
Day
Bit
Symbol
7 to 4
FD0 to FD3
3
2 to 0
Weekday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
X
Weekday
1) _{These bits may be re-assigned by the user.}
Bit 7
FD3
Bit 6
FD2
Bit 5
FD1
Bit 4
FD0
Bit 3
0
Bit 2
4
Bit 1
2
Bit 0
1
Value
0000
to
1111
0
1 to 7
Description
Reference
FD0 to FD3 bits control CLKOUT frequency
0000 no frequency at CLKOUT
See section 4.1
0001 to 1111 select the CLKOUT frequency
Unused; must be set to “0”
This register holds the current weekday coded in BCD format¹⁾
Bit 7
X
X
X
X
X
X
X
Bit 6
X
X
X
X
X
X
X
Bit 5
X
X
X
X
X
X
X
Bit 4
X
X
X
X
X
X
X
Bit 3
0
0
0
0
0
0
0
Bit 2
0
0
0
1
1
1
1
Bit 1
0
1
1
0
0
1
1
Bit 0
1
0
1
0
1
0
1
Date (address 05h…bits description)
Address
Function
05h
Date
Bit
7 to 6
5 to 0
Symbol
X
Date
Bit 7
0
Bit 6
0
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Value
0
0 to 31
Description
Unused; must be set to “0”
This register holds the current date coded in BCD format
Bit 0
1
Month / Century (address 06h…bits description)
Address
Function
Bit 7
Bit 6
06h
Month / Century
CB1
CB0
Bit 5
0
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit 0
1
Bit
7 to 6
5
4 to 0
Symbol
Century
X
Month
Value
CB1 CB0
Description
Leap Year
0
0
Century 20xx (year 2000 – 2099)
2000 = yes
0
1
Century 21xx (year 2100 – 2199)
2100 = no
1
0
Century 22xx (year 2200 – 2299)
2200 = no
1
1
Century 23xx (year 2300 – 2399)
2300 = no
0
Unused; must be set to “0”
1 to 12 This register holds the current month coded in BCD format
Months
January
February
March
April
May
June
July
August
September
October
November
December
Bit 7
X
X
X
X
X
X
X
X
X
X
X
X
Bit 6
X
X
X
X
X
X
X
X
X
X
X
X
Bit 5
0
0
0
0
0
0
0
0
0
0
0
0
Bit 4
0
0
0
0
0
0
0
0
0
1
1
1
Bit 3
0
0
0
0
0
0
0
1
1
0
0
0
Bit 2
0
0
0
1
1
1
1
0
0
0
0
0
Bit 1
0
1
1
0
0
1
1
0
0
0
0
1
Bit 0
1
0
1
0
1
0
1
0
1
0
1
0
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