RTC PCF8523 I2C - real time clock - Adafruit 3295

Module with real time clockPCF8523 and backup battery. It is used in applications written to register data, in clock, alarms, etc. Communication interface is an I2C bus.

PCF8523 is simple and cheap, yet provides very high precision. It can gain or lose 2 seconds a day. If you require high precision we suggestthe DS3231 module.

The product is compatible with Arduino and Raspberry Pi

The manufacturer providesthe Arduino libraryanduser's guidefor the Raspberry Pi.

• Supply voltage: from 3.3 V to 5 V
• The interfaceof communication: I2C / TWI (SDA, SCL)
• The bus address: 0x68
• Support time, for approx. 5 years
• Data storage with batteries CR1220 (batteries not included -sold separately)
• Two mounting hole diameter: 2.2 mm
• Board sizes: 25,5 x 21,7 x 4,8 mm
• Weight: 2.3 g

• The website of the manufacturer: Adafruit 3295
• Library for Arduino
• Connect to the Raspberry