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ICStation DS3231 AT24C32 High Precision Clock Module

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        The DS3231 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.
       The RTC maintains seconds, minutes, hours, day, date,month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. Address and data are transferred serially through an I2C bidirectional bus.
       Except for the high precision, this module also has some other functions which extend the additional function and the select range of the system host. It has a inside high precision digital temperature sensor module, the temperature accuracy of this sensor module is ±3°C. The on board control circuit can realize automatically power detection and manage the switch of the main power and the spare power. If the main power is cut off, this module can still provide precision data and temperature. When the power is back to normal, the on board reset function can restart the microcontroller

2.Module Parameters :

Size: 38mm(L)*22mm(W)*14mm(H)

Weight: 8g

Working voltage: 3.3--5.5V

Chip: High precision clock chip DS3231

Accuracy: ±2ppm from 0°C to +40°C

Two Time-of-Day Alarms

Programmable Square-Wave Output

Real-Time Clock Counts Seconds, Minutes,Hours, Day, Date, Month, and Year with Leap Year

Compensation Valid Up to 2100

Digital Temp Sensor Output: ±3°C Accuracy

Storage chip: AT24C32( 32K)

ICC Bus interface: Max transmission data: 400KHz( when the working voltage is 5V)
Cascade with our ICC equipment

Equips with battery holder so this module can work normally after there is power outage


3.Mechanical drawing

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(2) Shipping time 
Shipping time is 7-20 business days to most of countries; please view below table for exactly shipping time to your location. 

7-15 working days to: Most of Asia countries
10-16 working days to: USA , Canada , Australia , UK , Most of Europe countries
13-20 working days to: Germany , Russia
18-25 working days to: France , Italy , Spain , South Africa
20-45 working days to: Brazil , Most of South America countries

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Total price of the order >= 200USD or Total weight of the order >= 2.2KG

When the order meets to one of the above requirement, it will be shipped for FREE via EMS/DHL/UPS Express to below country. 
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Oceania: Australia , New Zealand , Papua New Guinea 
Europe& America: Belgium, Britain, Denmark, Finland, Greece, Ireland, Italy, Luxembourg, Malta, Norway, Portugal, Switzerland, Germany, Sweden, France, Spain, USA, Austria, Canada
Note: Shipping Fee to other countries, please contact

(2) Shipping Time
Shipping time is 3-5 working day (about 1 week) to most of countries. 

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3. Note
1) Delivery Time of mixed orders with items in different Shipping Status should be calculated using the longest estimate times listed. 
2) Chinese Holiday Reminder: During annual Chinese holidays, services from certain suppliers and carriers may be affected, and delivery for orders placed around the following times may be delayed by 3 - 7 days: Chinese New Year; Chinese National Day,etc. 
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ICStation  DS3231 AT24C32 High Precision Clock Module
$3.50 $1.54