DS3231 AT24C32 /DS1307 /DS1302 IIC Module Precision Clock Module Real Time Mini Module 3.3V/5V for Raspberry Pi

DS1302 Real Time Clock Module with CR2032 Button Battery 31 x 8 RAMDescription 31 x 8 RAM for scratchpad data storageSerial I O interface for minimum pin countWide Working Voltage 2 0 5 5VSingle byte and multi byte transmission for clock or RAM data read writeTTL compatible Vcc 5V Working Temperature 0 to 70 Deg C32 768KHz crystal oscillatorEquipped with a 260mAh CR2032 button battery not rechargeableOverall Size Approx 44 x 23 x 11mmWiring Vcc 5V 3 3VGND GNDCLK P01DAT P02RST P00DS1307 I2C real time clock chip RTC 24C32 32K I2C EEPROM memoryThe using CR2032 rechargeable lithium battery with charging circuitSolve the problem DS1307 with backup battery can not read and write Fully charged it can provide the DS1307 timing Compact design 27mm 28mm 8 4mmLeads to the a DS1307 clock pin to provide the clock signal for themicrocontroller Can be cascaded to other I2C devices 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 RTC maintains seconds minutes hours day date month and year information Less than 31 days o