EEPROM 8 Click is a compact add-on board that contains a highly reliable nonvolatile memory solution. This board features the CAV24C512, a 512-Kb electrically erasable programmable memory with enhanced hardware write protection for entire memory from ON Semiconductor. Internally organized as 65,536 words of 8 bits each, the CAV24C512 comes up with the compatible I2C serial interface. The CAV24C512 combines unprecedented data storage with excellent energy efficiency. It lasts one million full-memory read/write/erase cycles with more than 100 years of data retention. This Click board™ is suitable for consumer and industrial applications where dependable nonvolatile memory storage is essential.

EEPROM 8 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development.

EEPROM 8 Click as its foundation uses the CAV24C512, a 512-Kb EEPROM with an I2C interface and Write Protection Mode from ON Semiconductor. The CAV24C512 is organized as 65,536 words of 8 bits each and benefits from a wide power supply range and 100 years of data retention combining their unprecedented data storage with excellent energy efficiency. It is highly reliable, lasting one million full-memory read/write/erase cycles. On-chip Error Correction Code (ECC) makes this Click board™ suitable for high-reliability applications where dependable nonvolatile memory storage is essential.

This Click board™ communicates with MCU using the standard I2C 2-Wire interface that supports Standard (100 kHz), Fast (400 kHz), and Fast-Plus (1MHz) modes of operation. The CAV24C512 has a 7-bit peripheral address with the first five MSBs fixed to 1010. The address pins A0, A1, and A2, are programmed by the user and determine the value of the last three LSBs of the peripheral address, which can be selected by positioning onboard SMD jumpers labeled as ADDR SEL to an appropriate position marked as 0 or 1.

On the other side, the configurable Write Protection function, labeled as WP routed to the PWM pin of the mikroBUS™ socket, allows the user to freeze the entire memory area, thus protecting it from Write instructions.

This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development.

  • Interface: I2C
  • Compatibility: mikroBUS™
  • Dimensions: 28.6 x 25.4mm
  • Input Voltage: 3.3V or 5V
  • Supply Voltage: 3.3V
  • Memory Size: 512 Kb
  • Endurance: 1,000,000 Cycles
  • Data Retention: 100 Years
  • Operating Temperature Range: Min. -40°C, Typ. +25°C, Max. +120°C


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