HOW DOES IT WORK?

EEPROM 12 Click is based on the M24256E, an EEPROM from STMicroelectronics. The protections include write protection of the whole memory array, enhanced ESD/latch-up protection, and more. It can withstand over 4 million write cycles and has over 200 years of data retention. It has a write time both for byte or page within 5ms and supports random and sequential read modes. The write page mode allows up to 64 bytes to be written in a single write cycle. The error correction code (ECC) is implemented on each group of four EEPROM bytes, which improves the read reliability. During the internal write cycle, the device disconnects itself from the bus and writes a copy of the data from its internal latches to the memory cells. This, in turn, minimizes write delays.

EEPROM 12 Click uses a standard 2-Wire interface to communicate with the host MCU, supporting a clock frequency of up to 1MHz. The EEPROM supports a configurable device address register (CDA), which allows the user to define the device address and a device address lock (DAL) to freeze the configurable device address register. The EEPROM also supports a write control protection, which can be accessed over the WC pin.

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

SPECIFICATIONS