DS3231 AT24C32 IIC Precision RTC Real Time Clock Memory Module (ไม่รวมถ่าน)

Product Description
 - 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.
 - DS3231 available in commercial and industrial  temperature ranges, using a 16-pin 300mil SO package.
 - RTC maintains seconds, minutes, hours, day, date,  month, and year information. Less than 31 days of the month, the end date will  be automatically adjusted, including corrections for leap year.
 - Clock operates in either the 24 hours or band / AM  / PM indication of the 12-hour format. 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.
 - 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.
 - /RST pin is monitored as generating μP reset  manually.
 - 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.
 - If the main power failure, the device can continue  to provide accurate timing and temperature, performance is not affected.
 - When the main power re-power or voltage value  returns to within the allowable range, the on-chip reset function can be used to  restart the system microprocessor.