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| RV-4162 Datasheet, PDF (32/39 Pages) MICORO CRYSTAL SWITZERLAND – Ultra Small Real Time Clock | |||
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Micro Crystal
Ultra Small Real Time Clock / Calendar Module
8. APPLICATION INFORMATION
Operating RV-4162:
VDD
1 10 nF
VDD
SDA
SCL
RV-4162
INT
CLKOUT
VSS
2
SDA
SCL
μ Controller
INT
3
VSS
RV-4162
1
A 10 nF decoupling capacitor is recommended close to the device.
2
Interface lines SCL, SDA and INT are open drain and require pull-up resistor to VDD.
3
CLKOUT offers selectable frequencies 1 Hz to 32.768 kHz for application use. If not used, it is
recommended to disable CLKOUT for optimized current consumption.
Operating RV-4162 with SuperCap backup supply voltage:
VDD
5
6
4
1F
VDD
SDA
SCL
RV-4162
INT
CLKOUT
VSS
SDA
SCL
μ Controller
INT
VSS
4
A SuperCap combined with a low Vf diode can be used to operate the RV-4162 in stand-by or backup
supply voltage mode.
5
If a SuperCap is used, it is recommended using a Schottky diode due to its low forward voltage Vf.
6
If application requires, the INT pull-up resistor can be tied to the backup supply voltage, in order to
generate an interrupt even when main supply voltage VDD is off.
32/39
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