The 24AA32AT-I/SN: A Robust 32K I²C Serial EEPROM Solution from Microchip

In the realm of embedded systems and IoT devices, the need for reliable, non-volatile memory for data storage and configuration parameters is paramount. The Microchip 24AA32AT-I/SN stands out as a premier solution, offering 32 Kbits (4096 x 8) of Electrically Erasable Programmable Read-Only Memory (EEPROM) in a compact 8-lead SOIC package. This memory chip is engineered for low-power operation and high reliability, making it an ideal choice for a vast array of consumer, industrial, and automotive applications.

A key feature of the 24AA32AT-I/SN is its utilization of the ubiquitous I²C (Inter-Integrated Circuit) serial interface. This two-wire communication protocol (comprising Serial Data (SDA) and Serial Clock (SCL) lines) significantly reduces wiring complexity and pin count on the host microcontroller, simplifying board design and saving valuable space. The device supports a 400 kHz clock frequency, enabling efficient and rapid data transfer for time-sensitive operations. Furthermore, it is organized as a single block of 4096 bytes, with built-in hardware write-protection via a dedicated WP (Write-Protect) pin. When the WP pin is tied to VCC, the entire memory array is locked against write attempts, safeguarding critical data from accidental corruption.

Designed with power efficiency as a core principle, this EEPROM operates over a broad voltage range of 1.7V to 5.5V. This flexibility allows it to function seamlessly in both low-power, battery-operated devices and standard 5V systems. Its low standby current is a critical asset for maximizing battery life in portable applications. The chip also features a page write buffer of 32 bytes, allowing for faster write cycles by writing up to 32 bytes of data in a single operation. With an endurance of 1,000,000 erase/write cycles and a data retention period of over 200 years, the 24AA32AT-I/SN provides exceptional durability and long-term data security.

ICGOOFIND: The Microchip 24AA32AT-I/SN is a highly integrated and dependable serial EEPROM that excels in simplifying design architecture through its I²C interface while providing superior data integrity and low-power performance for demanding electronic products.

Keywords: I²C Interface, Serial EEPROM, Low-Power, Non-Volatile Memory, Write Protection.