High Accuracy DS3231 Precise Real Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C.
The DS3231 Precise Real Time Clock Module is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package.
 
 
Specifications:
 
	
		
			
Operating Voltage Range
			
			
2.7V ~ 5.5V (including 24C32).
			
		
		
			
Voltage Supply for RTC
			
			
2.2 V ~ 5.5 V
			
		
		
			
Accuracy
			
			
±2ppm from 0°C to +40°C.
			±3.5ppm from -40°C to +85°C.
			
		
		
			
Battery Holder
			
			
2032 Coin Battery.
			
		
		
			
I2C interface
			
			
Fast (400kHz) I2C Interface.
			
		
		
			
EEPROM
			
			
AT24C32 32Kbit Serial I2C.
			
		
		
			
Time and Date Format
			
			
Time: HH: MM: SS (12/24 hr).
			Date Format: YY-MM-DD-dd.
			
		
		
			
Operating Temperature Range
			
			
Commercial (0°C to +70°C)
			Industrial (-40°C to +85°C).
			
		
		
			
Digital Temp Sensor Output
			
			
10 bit, ±3°C Accuracy and 0.25C resolution.