Microchip Technology 25AA040A-I/ST EEPROM

The 25AA040A-I/ST from Microchip Technology is a 4 Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) device with a standard Serial Peripheral Interface (SPI). This memory chip is designed for optimal performance and reliability in a wide range of applications, offering a convenient non-volatile storage solution for saving small amounts of data such as device configuration or calibration settings.

Key Features:

• Memory Size: 4 Kbit (512 x 8)
• Interface Type: Serial (SPI compatible)
• Operating Voltage Range: 1.8V to 5.5V
• Max Clock Frequency: 10 MHz
• Temperature Range: -40°C to +85°C (Industrial)
• Packaging: 8-pin TSSOP (Thin Shrink Small Outline Package)

The 25AA040A-I/ST is designed for low-power consumption, making it an ideal choice for battery-operated and portable devices. Its SPI interface allows for simple integration into existing designs, providing a straightforward communication with microcontrollers and other digital systems.

With its robust design, the 25AA040A-I/ST ensures data retention of over 200 years and supports a minimum of 1 million erase/write cycles, offering a reliable storage solution for applications that require frequent data updates. Additionally, the device features a page write buffer, which allows writing up to 16 bytes in a single operation, enhancing write operation efficiency.

Advanced security features include a write-protect pin to prevent accidental data overwrites and a software data protection mechanism to safeguard against inadvertent writes during power-up. These features ensure the integrity and security of the data stored in the EEPROM.

Whether it's for industrial control systems, consumer electronics, medical devices, or automotive applications, the Microchip Technology 25AA040A-I/ST EEPROM provides a dependable and flexible non-volatile memory solution.