DS3231Low-cost, high-precisionI2CReal-Time Clock(RTC)TCXO with integrated(TCXO)And crystals. The device incorporates a battery input , and maintains accurate timekeeping when main power supply is disconnected . Integrated Crystal improved long-term accuracy of the device and reduces the number of components of the production line .DS3231Offered in commercial and industrial temperature ranges,16Pin300milofSOPackage.
RTCSave seconds, minutes , hours, day , date , month, and year information. less than31The days of the month , end of the month date is automatically adjusted , including corrections for leap year. Clock work format can be24Hour or belt/ AM / PMInstructions12Hour format. It provides two calendar alarm clock can be set and a square wave output can be set . Address and dataI2CBidirectional serial transmission bus .
A precision temperature-compensated voltage reference and comparator circuit monitorsVCCState , detect power failures , provide a reset output , and to automatically switch to the backup supply when necessary . In addition ,/ RSTMonitoring pins can be used as produceμPManual reset input.
In addition to high- precision timekeeping outside ,DS3231Also has some other function, These features extend the system host additional features and options. The device integrates an extremely accurate digital temperature sensor , throughI2C *Interface can be accessed(As the same time). Accuracy of the temperature sensor is± 3 ° C. The control circuit can be realized on-chip automatic power to detect and manage the main power supply and backup power(That low-voltage battery)Switching between the power supply . If the main power failure , the device can continue to provide accurate timing and temperature , performance is not affected . When the main power re-power or voltage value returns to within the permissible range , the on-chip reset function can be used to restart the system microprocessor.
size: 38mm (long) * 22mm (wide) * 14mm (High)
Operating Voltage: 3.3–5.5V
Clock Chip: Precision clock chipDS3231
Clock Accuracy: 0-40 °Within range,Accuracy2ppm,In error about1minute
Belt2Calendar alarm clock
A programmable square-wave output
Real-time clock generating seconds, minutes , hours, day , date , month and year time, and provide valid until2100Compensation leap year
Internal temperature sensor chip comes, Accuracy± 3 °
Memory chip: AT24C32 (Storage capacity32K)
IICBus Interface, The maximum transmission speed400KHz (Operating voltage5VTime)
Cascadable OtherIICequipment, 24C32Address by short circuitA0 / A1 / A2modify,The default address is0x57
With rechargeable batteryLIR2032,Ensure the system after power failure, Any natural clock normal walking
Packing: Single anti-static packaging
Wiring instructions(With uno r3Case)
SCL → A5
SDA → A4
VCC → 5V
GND → GND
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