RV-4162 Datasheet, PDF (13/39 Pages) MICORO CRYSTAL SWITZERLAND – Ultra Small Real Time Clock

Micro Crystal
Ultra Small Real Time Clock / Calendar Module
RV-4162
Years (address 07h…bits description)
Address
Function
07h
Years
Bit
7 to 0
Symbol
Years
Bit 7
80
Bit 6
40
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Value
Description
0 to 99 This register holds the current year coded in BCD format
Bit 0
1
3.5. CONTROL SECTION
Frequency Compensation (address 08h…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3 Bit 2 Bit 1
Bit 0
08h
Freq. Compensation
OUT
0
Mode
16
8
4
2
1
Bit
7
6
5
4 to 0
Symbol
OUT
X
Mode
Calibration value
Value
0
1
0
0
1
0 to 31
Description
When OFIE, AFE and Watchdog register are not set to generate an
interrupt, the INT pin 6 becomes logic output reflecting the content of
this bit 7 “OUT”; See section 4.8
Unused; must be set to “0”
Negative calibration; See section 4.2
Positive calibration; See section 4.2
This register holds the calibration value coded in binary format
Watchdog (address 09h…bits description)
Address
Function
Bit 7
09h
Watchdog
WD2
Bit 6
WDM4
Bit 5
WDM3
Bit 4
WDM2
Bit 3 Bit 2
WDM1 WDM0
Bit 1
WD1
Bit 0
WD0
Bit
7, 1, 0
6 to 2
Symbol
WD2 / WD1 / WD0
WDM4 to WDM0
Value
000
-
100
0 to 31
Description
Watchdog Timer Clock Source: 16Hz / 4Hz / 1 Hz / ¼ Hz / ¹/60 Hz
This register holds the binary coded Watchdog Multiplier value
Month Alarm (address 0Ah…bits description)
Address
Function
Bit 7
Bit 6
Bit 5
0Ah
Month Alarm
AFE CLKOE
0
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit
7
6
5
4 to 0
Symbol
AFE
CLKOE
X
Month alarm
Value
0
1
0
1
0
1 to 12
Description
Disables Alarm Flag
Enables Alarm Flag
Disables CLKOUT (clock output pin 2)
Enables CLKOUT (clock output pin 2)
Unused; must be set to “0”
This register holds the month alarm coded in BCD format
Bit 0
1
Date Alarm (address 0Bh…bits description)
Address
Function
Bit 7
0Bh
Date Alarm
ARM4
Bit 6
ARM5
Bit 5
20
Bit 4
10
Bit 3
8
Bit 2
4
Bit 1
2
Bit
7 to 6
5 to 0
Symbol
ARM4 – ARM5
Date alarm
Value
00 to 11
1 to 31
Description
Alarm repeat mode; See section 4.4
This register holds the date alarm coded in BCD format
Bit 0
1
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