DS3231 AT24C32 IIC High Precision RTC Module Clock Timer Memory Module for Arduino[Product Information]- DS3231 is a low-cost， extremely accurate I2C real-time clock (RTC)， with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.
- Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
- Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.
- Save time and high precision addition， DS3231 also has some other features that extend the system host of additional features and a range of options.
- 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 ?P reset manually.
