DS1307 Real Time Clock Module AT24C32 Board for Arduino or PIC (incl Battery)

DS1307 REAL TIME CLOCK MODULE AT24C32 BOARD FOR ARDUINO OR PIC

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