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DESCRIPTION
This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for datalogging, clock-building, time stamping, timers and alarms, etc. The DS1307 is the most popular RTC - but it requires 5V power to work (although we've used it with 5V power and 3.3V logic successfully)
Works great with an Arduino using Adafruit RTC library or with a Raspberry Pi (or similar single board linux computer)
- PCB & header are included
- Plugs into any breadboard, or you can use wires
- Two mounting holes
- Will keep time for 5 years or more
Note: This product does not come with a CR1220 coin cell battery.
TECHNICAL DETAILS
Dimensions:
- Length: 25.8mm/1.02in
- Width: 21.7mm/0.85in
- Height: 5mm/0.2in
- Weight: 2.3g/0.09oz
- Mounting holes are 2.2mm(0.086in) diameter, 25mm(0.98in) apart
- This board/chip uses I2C 7-bit address 0x68