Magic&shell 2PCS DS3231 AT24C32 IIC High Precision Real Time Clock Module RTC Module for Arduino Raspberry Pi

Specifications: Voltage: 3.3-5.5V Clock chip: DS3231 Memory Chip: AT24C32 Accuracy: 0-40 Degree Centigrade, the accuracy 2ppm, the error was about 1 minute. Size: 38X22X14mm(LxWxH). Feature: DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping. Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line. The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package. A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, RST pin is monitored as generating uP reset manually. DS3231 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. This temperature sensor accuracy is +/- 3 degree C. On-chip power supply control circuit can automatically detect and manage the main and standby power to switch between the power supply. Bring 2 calendar alarm clocks. Programmable square wave output. Chip inside the cabin temperature sensor, the accuracy of plus or minus 3 Degree. Other IIC devices can be cascaded. The 24C32 address can be modified by short-circuiting A0/A1/A2. The default address is 0x57. With the battery CR2032, ensure the system power, the clock still normal walk. IC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V).