DS3231 AT24C32 High-precision Clock Module IIC Module Storage Module With BatteryItem NO.: DS3231 AT24C32

DS3231 Clock Module

AT24C32 Storage Module

Product Information:

DS3231 is a low-cost, high-precision I2C real-time clock (RTC) with integrated temperature compensated crystal oscillator (TCXO) and crystal. The device contains a battery input terminal, which can still maintain accurate timing when the main power supply is disconnected. The integrated crystal oscillator improves the long-term accuracy of the device and reduces the number of components in the production line. The DS3231 provides commercial and industrial temperature range, and adopts 16-pin 300mil SO package.

RTC stores the information of second, minute, hour, week, date, month and year. For months with less than 31 days, the date at the end of the month will be automatically adjusted, including the correction of leap years. The working format of the clock can be 24 hours or 12 hours with/AM/PM indication. Two configurable calendar alarm clocks and one configurable square wave output are provided. The address and data are transmitted serially via I2C bidirectional bus.

Precise, temperature-compensated voltage reference and comparator circuit is used to monitor VCC status, detect power failure, provide reset output, and automatically switch to backup power supply when necessary. In addition, the/RST monitoring pin can be used as a generator μ Manual input of P reset.

In addition to high timing accuracy, DS3231 also has some other functions, which expand the additional functions and selection range of the system host. A very accurate digital temperature sensor is integrated in the device, which can be accessed through the I2C * interface (as time). The accuracy of this temperature sensor is ± 3 ° C. On-chip control circuit can realize automatic power detection and manage power switching between main power supply and standby power supply (i.e. low-voltage battery). If the main power supply is powered down, the device can still provide accurate timing and temperature without affecting its performance. When the main power supply is re-energized or the voltage value returns to the allowable range, the on-chip reset function can be used to restart the system microprocessor.

Module Parameters:

1. Size: 38mm (length) * 22mm (width) * 14mm (height)

2. Weight: 8g

3. Working voltage: 3.3-5.5V

4. Clock chip: high-precision clock chip DS3231

5. Clock accuracy: within the range of 0-40 ℃, the accuracy is 2ppm, and the annual error is about 1 minute

6. With 2 calendar alarm clocks

7. Programmable square wave output

8. Real-time clock generates seconds, minutes, hours, weeks, dates, months and years, and provides leap year compensation valid until 2100

9. The chip is internally equipped with a temperature sensor with an accuracy of ± 3 ℃

10. Memory chip: AT24C32 (storage capacity 32K)

11. IIC bus interface, with high transmission speed of 400KHz (when the working voltage is 5V)

12. Other IIC devices can be cascaded. The 24C32 address can be modified by short circuit A0/A1/A2. The default address is 0x57

13. With rechargeable battery LIR2032, the clock can still move normally after the system is powered off

14. Packaging method: single anti-static packaging

Wiring Instructions (Take Arduino uno R3 As An Example):

●SCL→A5

●SDA→A4

●VCC→5V

●GND→GND