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RV-3049 Datasheet(PDF) 13 Page - MICORO CRYSTAL SWITZERLAND

Part # RV-3049
Description  DTCXO Temperature Compensated Real Time Clock
PDF  65 Pages
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Manufacturer  MICROCRYSTAL [MICORO CRYSTAL SWITZERLAND]
Direct Link  http://www.microcrystal.com
Logo MICROCRYSTAL - MICORO CRYSTAL SWITZERLAND

RV-3049 Datasheet(HTML) 13 Page - MICORO CRYSTAL SWITZERLAND

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Micro Crystal
DTCXO Temperature Compensated Real Time Clock / Calendar Module
RV-3049
13/65
3.2.5.CONTROL_RESET (address 04h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
04h
Control_Reset
X
X
X
SysR
X
X
X
X
Bit
Symbol
Value
Description
Reference
7 to 5
unused
X
Unused
4
SysR
0
No System Reset will be executed
See section 4.2.1.
1
Set bit = “1” triggers a System Reset. After the
restart of the logic, the SysR will be cleared and in
bit 4 “SR” in the register Control_Status will be set
3 to 0
unused
X
Unused
Bit positions labelled as “
X” are not implemented and will return a “0” when read.
3.3. WATCH PAGE REGISTER FUNCTION
Watch Page registers are coded in the Binary Coded Decimal (BCD) format; BCD format is used to simplify
application use.
3.3.1.SECONDS, MINUTES, HOURS, DAYS, WEEKDAYS, MONTHS, YEARS REGISTER
Seconds (address 08h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
08h
Seconds
X
40
20
10
8
4
2
1
Bit
Symbol
Value
Description
7
X
-
Unused
6 to 0
Seconds
0 to 59
This register holds the current seconds coded in BCD format
Minutes (address 09h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
09h
Minutes
X
40
20
10
8
4
2
1
Bit
Symbol
Value
Description
7
X
-
Unused
6 to 0
Minutes
0 to 59
This register holds the current minutes coded in BCD format
Hours (address 0Ah…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0Ah
Hours
X
12-24
20-PM
10
8
4
2
1
Bit
Symbol
Value
Description
7
X
-
Unused
12 hour mode (AM/PM)
6
12-24
0
Selects 24-hour mode
1
Selects 12-hour (AM/PM) mode
5
20-PM
0
Indicates AM
1
Indicates PM
4 to 0
Hours
1)
1 to 12
This register holds the current hours coded in BCD format
24 hour mode
6
12-24
0
Selects 24-hour mode
1
Selects 12-hour AM/PM mode
5 to 0
Hours
1)
0 to 23
This register holds the current hours coded in BCD format
1) User is requested to pay attention setting valid data only.



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