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Aideepen DS3231SN RTC Module, 2PCS DS3231 AT24C32 IIC High Precision Real Time Clock Breakout Replace DS1307 for Arduino

4.8 out of 5 stars 26 ratings

Price: $33.97 + $7.38 Delivery
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Time Clock

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  • 【Upgraded DS3231SN Chip, Not DS3231"M"】The DS3231SN is the TCXO high stability RTC, acurate time keeping, accurate I2C real-time clock (RTC) module with a temperature-compensated crystal oscillator (TCXO) improving long-term accuracy
  • RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year. The clock operates in either the 24 hours or band / AM / PM indication of the 12-hour format. Chip temperature sensor comes with an accuracy of ± 3°C
  • Save time and high precision addition. DS3231 RTC Module also has some other features that extend the system host of additional features and a range of options. The device integrates a very precise digital temperature sensor, through the I2C * interface to access it at the same time
  • 【Please Must Note:】Because it's not safty to ship the Li Battery via air mail, our DS3231 RTC Modules don't include battery. For battery model, you can choose CR2032 or you can use a rechargeable CR2025, LIR2032. Thanks for your understanding
  • IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V), cascaded with other IIC device. 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57

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Product Information

Size Name:Time Clock

Technical Details

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Product description

Size Name:Time Clock

Aideepen 2PCS DS3231 AT24C32 IIC High Precision Real Time Clock Breakout Replace DS1307 for Arduino. The DS3231SN is the TCXO high stability RTC

Module Parameters:
Operating Voltage :3.3 - 5 .5 V
Clock Chip: RTC DS3231SN
Memory Chip: AT24C32 (storage capacity 32K)
Clock Accuracy :0-40 ° range, the accuracy 2ppm, the error was about 1 minute
Calendar alarm clock with two
Programmable square-wave output
Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
Chip temperature sensor comes with an accuracy of ± 3 °
IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
Size: 38mm (L)*22mm (W) *14mm (H)

Wiring instructions (with Arduino uno r3 for example):
SCL→A5
SDA→A4
VCC→5V
GND→GND

Package Included:
2 x DS3231SN AT24C32 RTC Modules


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Customer reviews

4.8 out of 5 stars
4.8 out of 5
26 global ratings
5 star
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4 star
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STEPHEN S
4.0 out of 5 stars Great... but Do NOT use CR2032 battery without modifying
Reviewed in the United States on 14 February 2020
Size Name: Time ClockVerified Purchase
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4.0 out of 5 stars Great... but Do NOT use CR2032 battery without modifying
Reviewed in the United States on 14 February 2020
Very nicely made unit. Comes with the higher end DS3231SN chip.

HOWEVER... this unit is still shipping set up to charge the coin battery if you add one. This means you CANNOT use a regular CR2032 battery for backup without modifying the board. I took a star off because not disclosing this can potentially damage equipment or even start a battery fire.

See the attached photo. Module Vcc is connected to a 5v supply, and you see I’m getting 4.8v on the battery terminals.

Search the web to see how to mod the board to remove the diode or resistor that connects the positive battery terminal to Vcc. This will make it safe to use a regular CR2032 battery.

There are many views out there on whether to use a rechargeable battery in this kind of trickle charger. So research and see what route works best for you.
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Mark A. Weaver
5.0 out of 5 stars Way more accurate than the other RTC modules I’ve used!
Reviewed in the United States on 20 February 2021
Size Name: Time ClockVerified Purchase
One person found this helpful
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Trish
5.0 out of 5 stars after 3 months EXACTLY the same as NIST Atomic slock.
Reviewed in the United States on 9 June 2021
Size Name: Time ClockVerified Purchase
abrian
5.0 out of 5 stars Exactly as described, but had to remove resistor to use regular battery
Reviewed in the United States on 10 February 2021
Size Name: Time ClockVerified Purchase
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5.0 out of 5 stars Exactly as described, but had to remove resistor to use regular battery
Reviewed in the United States on 10 February 2021
Arrived quickly, and as described. I removed the resistor in the picture as others have mentioned, so I could use a regular (non rechargeable) battery safely. Took about 20 seconds and everything works as it should.
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Ron N.
5.0 out of 5 stars Convenient CR2032 battery holder
Reviewed in the United States on 21 April 2021
Size Name: Time ClockVerified Purchase