MCHP25AA256-I/SN
Overview
The 25AA256-I/SN is a 256Kbit serial EEPROM organized as 32K x 8 bits, utilizing the Serial Peripheral Interface (SPI). It operates over a wide voltage range of 1.8V to 5.5V, making it suitable for low-power battery-operated devices as well as standard 5V systems. With a maximum clock frequency of 10 MHz and a very low standby current of 1 uA, it provides efficient non-volatile storage for configuration data and user settings.
Why Choose This Part
This device features a fast 10 MHz clock rate and supports sequential read operations, allowing for rapid data retrieval. It includes block write protection to safeguard critical memory regions and is AEC-Q100 qualified, ensuring high reliability in demanding environments. The low 1.8V minimum supply voltage and 1 uA standby current are optimized for ultra-low power consumption.
Applications
Key Specifications
Getting Started
To interface with the 25AA256-I/SN, configure your microcontroller for SPI Mode 0 or 3. Ensure the CS line is pulled high between transactions to manage the internal write cycle, which typically requires a delay after a Write Enable (WREN) and Write command. For prototyping, the 8-SOIC package can be used with standard SOIC-to-DIP breakout boards.
