The Microchip Technology Inc. 24AA024/24LC024/ 24AA025/24LC025 is a 2 Kb Serial Electrically Erasable PROM(EEPROM) with a voltage range of 1.7V to 5.5V.

The UNI/O serial EEPROM is a single I/O EEPROM device that has been developed by Microchip. The EEPROM has been developed to work on the UNI/O Bus, a propriety single I/O bus protocol, also developed by Microchip.

The requirement for small-to-medium density data storage crops up in many applications where designers need non-volatile storage of variables which change infrequently, such as calibration parameters,

The very low voltage EEPROM devices are supported by the MPLAB Starter Kit for Serial Memory Products.

The DS28E01-100 combines 1024 bits of EEPROM organized as four 256-bit pages, a 64-bit secret, a register page, a 512-bit SHA-1 engine in a single chip.

Now that we have reviewed the different buses, I want to spend some time discussing a few of the UNI/O bus requirements. As you already learned the UNI/O bus uses a single I/O port. But let’s discuss what that means.

As the demand of small electronic devices continues to grow, we saw a need to develop a new family of non volatile serial memory devices that would fit inside of three pins SOT 23 package.

Microchip application note application AN 1095. Emulating data EEPROM for PIC18 and PIC24 microcontrollers and dsPIC digital signal controllers.

Microchip’s new family of serial EEPROM devices offer built-in EUI-48 and EUI-64 compatible MAC addresses. Designed to work on standard busses, such as SPI, I2C and the UNI/O bus, the devices provide easy and inexpensive access to MAC addresses, and feature up to 1.5 Kb of EEPROM that can be used for storing configuration and user settings, or as a scratch-pad area for buffering small amounts of data.

Microchip’s recently developed UNI/O bus gives designers more flexibility when designing applications that require external memory.