Spot DS3231 AT24C32 High -precision clock module IIC module storage module

DS3231 High -precision clock module (C5B2)

DS3231 is a low -cost, high -precision I2C real -time clock (RTC), and has an integrated temperature tonic crystal (TCXO) and crystals.This device contains the battery input terminal, which can still maintain accurate timing when disconnecting the main power.Integrated crystal improves the long -term accuracy of the device and reduces the number of components of the production line.DS3231 provides a commercial -grade and industrial -grade temperature range, and uses a 16 -pin 300mil SO packaging.
RTC saves seconds,, time, week, date, month and annual information.With less than 31 days, the date of the month will be automatically adjusted, including the correction of the leap year.The working format of the clock can be a 12 -hour format of 24 hours or with/am/pm.Provide two sets of calendar alarm clocks and a set of square wave output.The address and data are transmitted by the serial transmission of the I2C two -way bus.
The precision, the voltage of the temperature compensation and the comparator circuit are used to monitor the VCC status, detect the power failure, provide reset output, and automatically switch to the backup power when necessary.In addition, the/RST monitoring pin can be used as a manual input that generates μP reset.
In addition to the high timing accuracy, DS3231 also has some other functions, which expand the additional functions and selection range of the system host.This device integrates a very precise digital temperature sensor, which can be accessed by the I2C*interface (as time).The accuracy of this temperature sensor is ± 3 ° C.The control circuit on the film can realize the automatic power detection, and manages the power switch between the main power supply and the spare power supply (that is, the low -voltage battery).If the main power supply is lost, the device can continue to provide accurate timing and temperature, and the performance is not affected.When the main power supply is re -power or the voltage value is returned to the allowable range, the reset function on the film can be used to restart the system microprocessor.

Module parameters:
1. Size: 38mm (long)*22mm (width)*14mm (height)
2. Weight: 8G
3. Work voltage: 3.3--5.5V
4. Clock chip: High -precision clock chip DS3231
5. Clock accuracy: within the range of 0-40 ℃, accuracy 2ppm, annual error of about 1 minute
6. Bring 2 calendar alarm clocks
7. Output of programming square waves
8. Real -time clocks gene
9. The inside of the chip has a temperature sensor, the accuracy is ± 3 ℃
10. Storage chip: AT24C32 (storage capacity 32K)
11. IIC bus interface, the highest transmission speed is 400kHz (when the working voltage is 5V)
12. For other IIC devices, 24C32 address can be modified by short -circuit A0/A1/A2, and the default address is 0x57
13. CR2032 battery
14. Packaging method: single anti -static packaging
Wiring instructions (Take Arduino Uno R3 as an example):
SCL → A5
SDA → A4
VCC → 5V
GND → GND