Product Summary

The DS3231 is a low-cost, extremely accurate I2C realtime clock (RTC) with an integrated temperaturecompensated 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.

Parametrics

Absolute maximum ratings: (1)Voltage Range on VCC, VBAT, 32kHz, SCL, SDA, RST, INT/SQW Relative to Ground: -0.3V to +6.0V; (2)Operating Temperature Range (noncondensing): -40℃ to +85℃; (3)Junction Temperature: +125℃; (4)Storage Temperature Range: -40℃ to +85℃; (5)Lead Temperature (Soldering, 10s): +260℃/10s.

Features

Features: (1)Accuracy ±2ppm from 0℃ to +40℃; (2)Accuracy ±3.5ppm from -40℃ to +85℃; (3)Battery Backup Input for Continuous Timekeeping; (4)Operating Temperature Ranges: Commercial: 0℃ to +70℃, Industrial: -40℃ to +85℃; (5)Low-Power Consumption; (6)Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100; (7)Two Time-of-Day Alarms; (8)Programmable Square-Wave Output; (9)Fast (400kHz) I2C Interface; (10)3.3V Operation; (11)Digital Temp Sensor Output: ±3℃ Accuracy; (12)Register for Aging Trim; (13)RST Input/Output; (14)UL Recognized.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS3231SN#T&R
DS3231SN#T&R
Maxim Integrated Products
Real Time Clock Integrated RTC/TCXO/Crystal
Data Sheet
0-609: $3.07
609-1000: $2.28
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS321
DS321
Switchcraft
Patch Panels DESIGN STRIP KIT
Data Sheet
0-1: $16.24
1-10: $12.63
10-25: $11.38
25-50: $10.33
DS321X
DS321X

KIT X-WIDE DESIGN STRIP VERT
Data Sheet
0-10: $8.12
10-30: $7.92
30-50: $7.31
50-100: $6.91
100-250: $6.30
250-500: $5.89
500-1000: $5.40
DS322X
DS322X
Switchcraft
Patch Panels DESIGN STRIP KIT
Data Sheet
0-1: $20.47
1-10: $15.92
10-25: $14.33
25-50: $13.02
DS323
DS323
Switchcraft
Patch Panels DESIGN STRIP KIT
Data Sheet
0-1: $41.65
1-10: $32.40
10-25: $29.16
25-50: $26.50
DS3231
DS3231
Other

Data Sheet
Negotiable 
DS3231M
DS3231M
Other

Data Sheet
Negotiable