DS3231 is a low-cost,
extremely accurate I2C real-time clock (RTC), with an integrated
temperature-compensated crystal oscillator (TCXO) and crystal. Compared to the
DS1302 solution, the DS3231 has many advantages, it function with a VCC ranging
from 2.3V to 5.5V and has a battery backup. Unlike the DS1307, the DS3231 also
has an integrated crystal (so no external crystal required), temperature
sensor, 2 programmable time-of-day alarms, a 32.768 kHz output pin to ensure
higher accuracy. Besides, there is also a EEPROM AT24C32 to
supply you 32K EEPROM to store your data, it is the best choice for your
application that needs recoding time, a built battery holder make this module
suitable. It is a good substitution for the data logging shield, with even higher
time precision.
Features
Size: 38mm (length) *
22mm (W) * 14mm (height)
Weight: 8g
Operating voltage :3.3 - 5 .5 V
Clock chip: high-precision clock chip DS3231
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 ℃
Memory chips: AT24C32 (storage capacity 32K)
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
Package list:
1x DS3231 RTC
module(Without battery)
Download& External Link
24C32 Datasheet
DS3231 Datasheet
AT24C32 Arduino Usage
DS3231 Arduino Usage
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