Description
DS1307 RTC Module Pin Description The DS1307 RTC (Real-Time Clock) module typically has 8 pins. The pin description is as follows: VCC: Power supply pin, usually connected to 5V or 3.3V GND: Ground pin SDA: I2C data pin, connected to the microcontroller’s SDA pin. SCL: I2C clock pin, connected to the microcontroller’s SCL pin. SQW: Square wave output pin, used to output a square wave signal with a frequency of 1Hz, 4kHz, 8kHz, or 32kHz. About this item Universal Data Logging Module for Microcontroller Projects like Arduino with DS1307 Real-Time-Clock and Micro-SD Memory Card Slot operates on 5V and offers a Socket for a CR1220 Backup button Cell RTC Chip DS1307; Battery Slot for CR1220; Memory Slot for Micro-SD; Power Supply 5V; SPI Memeory Card Interface; I2C Real-Time-Clock Interface Address 0x68 Dimensions: Size 33.5 x 36 mm; Weight 6 g Content: 1x Data-Logger Module; 1x Male Pin Header (not assembled); Backup Battery CR1220 is not included
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