24C64 Serial EEPROM SMD 64Kbit I2C SOIC-8

Pin Configuration 

Features

• Low-voltage and standard-voltage operation
  _VCC = 1.7V to 5.5V
• Internally organized as 8,192 x 8 (64K)
• I2C-compatible (2-Wire) serial interface
• Schmitt Trigger, filtered inputs for noise suppression
• Bidirectional data transfer protocol
• 400kHz (1.7V) and 1MHz (2.5V, 2.7V, 5.0V) compatibility
• Write Protect pin for hardware protection
• 32-byte Page Write mode
  _Partial Page Writes allowed
• Self-timed Write cycle (5ms max)
• High reliability
  _Endurance: 1,000,000 write cycles
  _Data retention: 100 years

Connecting 24C64 EEPROM IC to a Microcontroller/Microprocessor Unit

The EEPROM IC can be easily connected to an MCU/MPU. The diagram below can be referred to as the pinout and the connections of 24C64 to an MCU/MPU.

The 24C64 communicates via the I2C bus, so the SDA and the SCL pins are connected to the Data (I2C SDA) and clock(I2C SCK) line pin of the MCU/MPU, respectively. The SCA and SDA pins on the device are open rails so to make it work as normal pins you can also connect the pins to a pull-up resistor of 4.7K ohm and connect it to the VCC and then connect to your MCU.

The 3 pins A0, A1, and A2 form the address, so can be put to the ground. The WP/WC pin can be pulled down to the ground and the VCC and GND terminal of the 24C64 IC is to be connected to the VCC and Ground terminal of the MCU/MPU to power up the IC.

Note: You can connect the A0, A1, and A2 pins to either VCC or Ground. These 3 pins decide the logic of the slave device. If you connect them to the ground, the logic is 0 and when you connect it to VCC the logic becomes 1.

Applications 

Here are some of the applications of 24C64 EEPROM IC.

1. Remote keyless systems
2. Additional memory device
3. Electronic appliances

24C64 Datasheet