The Microchip 24AA128T-I/MS: A Benchmark in Serial Memory Integration

In the realm of embedded systems and IoT devices, the demand for reliable, compact, and efficient non-volatile memory is paramount. The Microchip 24AA128T-I/MS stands out as a premier solution, offering 128 Kbits of Electrically Erasable Programmable Read-Only Memory (EEPROM) in a space-saving 8-lead MSOP package. This device is engineered for low-power operation and high endurance, making it an ideal choice for a wide array of applications, from consumer electronics to industrial automation.

A key feature of this memory chip is its utilization of the I²C (Inter-Integrated Circuit) serial interface, which facilitates communication with a host controller using only two bidirectional lines: Serial Data (SDA) and Serial Clock (SCL). This streamlined interface significantly reduces the number of I/O pins required, simplifying board layout and lowering overall system cost. The 24AA128T-I/MS supports a 400 kHz clock frequency, ensuring efficient data transfer rates for most real-time applications.

The 24AA128T-I/MS operates across a broad voltage range (1.7V to 5.5V), providing exceptional design flexibility for both low-voltage and standard voltage systems. Its low power consumption is critical for battery-powered devices; the chip features a standby current of just 1 μA (max.) and a read current of 1 mA (max.) at 5.5V. With a robust endurance of 1,000,000 erase/write cycles and data retention exceeding 200 years, this EEPROM guarantees long-term reliability and data integrity.

Internally organized as 16,384 x 8, the memory array supports random and sequential read operations. The device includes hardware write-protection via a dedicated pin (WC), preventing accidental data modification. Additionally, it incorporates a page write buffer of 64 bytes, allowing for faster write operations by minimizing the number of bus transactions. These features make it exceptionally suited for storing configuration parameters, calibration data, and event logs.

ICGOOODFIND: The Microchip 24AA128T-I/MS is a highly integrated, reliable, and versatile serial EEPROM. Its combination of high density, low-power operation, industry-standard I²C interface, and exceptional endurance makes it a superior choice for designers seeking to enhance their system's non-volatile memory capabilities without compromising on board space or performance.

Keywords: I²C Interface, Low-Power Operation, 128K EEPROM, High Endurance, Write Protection