Feature(may vary by option.)
●Voltage: 3.3-5V, memory chips: AT24C32 (storage capacity 32K)
●Watch Chip:High precision clock chip DS3231 (There are 3 different chips for this watch module, DS3231N, DS3231SN and DS3231M, we will send it randomly.
●About battery type: battery is not included, you can use CR2032 or LIR2032 battery
●Feature: The DS3231 is an RTC IC developed by Maxim Integrated. It is a cost-effective, extremely accurate RTC IC with communication via I2C interface. An interesting feature of DS3231 RTC IC is that it has a built-in crystal oscillator and temperature sensor, so you dont need to connect an external crystal.
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Description
DS3231 Real Time Clock Modules
The DS3231 is a cost-effective, high-precision I2C real-time clock (RTC) with an integrated temperature compensated quartz oscillator (TCXO) and quartz. The building block has a battery input that can maintain timing when the main power supply is interrupted.
Wiring instructions:
For Arduino U/N/O R/3 board
SCL → A5
SDA → A4
VCC → 5V
GND → GND
- Battery type: CR2032 or LIR2032
- Battery is not included
Description:
Parameters
Watch accuracy: 0-40° range, the accuracy 2ppm, the error was about 1 minute. With two calendar alarm clocks. Programmable rectangular output. Real-time clock generator seconds, minutes, hours, day, date, month and year timing and offer valid up to the year. 2100 Leap year compensation. Chip temperature sensor comes with an accuracy of ± 3°. Can be cascade with other IIC devices, 24C32 addresses can be short-circuited A0/A1/A2 change standard address is 0 x 57.
- Size: 38 mm (L) x 22 mm (W) x 14 mm (H)
- Weight: 8 g
- Operating voltage: 3.3-5.5 V
- Watch chip: high-precision watch chip DS3231
- Memory chips: AT24C32 (storage capacity 32K)
- IIC bus interface, the maximum transmission speed of 400 KHz (working voltage of 5 V)