DS1307 Real Time Clock Module AT24C32 Board for Arduino or PIC (incl Battery)
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Product details
DS1307 REAL TIME CLOCK MODULE AT24C32 BOARD FOR ARDUINO OR PIC (INCL BATTERY)
Product information
Two wire I2C interface
Hour: Minutes: Seconds AM/PM
Day Month, Date - Year
Leap year compensation
Accurate calendar up to year 2100
1Hz output pin
DS1307 based RTC with LIR2032 on-board battery charging circuit (Non-Rechargeable Battery Included)
56 Bytes of Non-volatile memory available to user
On-board Atmel AT24C32 32kB EEPROM accessible via unique ID number
Duplicate pins DS, SCL, SDA, VCC and GND on either side
Specifications
Size: 28 x 25 x 10mm
Weight: 7g
Package includes
1 x Tiny RTC DS1307 Real Time Clock Module with on-board Atmel AT24C32 1 x CR2032 Non Rechargeable 3V Lithium Battery
Important Information
- Rechargeable LIR2032 lithium ion cells are not readily available and are likely to be very expensive compared to standard non-rechargeable CR2032 lithium cells.
- In order to use the included CR2032 cell, the on-board charging circuit needs to be disabled. This is done by desoldering components D1, R4 and R5. R6 is also removed but replaced with a 0Ω resistor or wire link. The procedure is easily accomplished with a pair of tweezers and a hot-air pencil.
- The RTC module can also be used for the Raspberry Pi; however pull-up resistors R2 and R3 will also have to be removed. This is necessary as the Raspberry Pi has its own 1.8kΩ pull-up resistors.
Example: Module connected to a Raspberry Pi by 4 wires. Note components removed