The Microchip 93LC56BT-I/SN: A Robust 1K Serial EEPROM for 5V Systems

In the realm of embedded systems and electronic design, reliable non-volatile memory is a fundamental component for storing critical data. The Microchip 93LC56BT-I/SN stands out as a premier solution, offering designers a dependable and efficient method for data retention in 5-volt applications. This 128 x 8-bit serial EEPROM (Electrically Erasable Programmable Read-Only Memory) provides a essential balance of capacity, performance, and integration ease.

Engineered for versatility, this 1K-bit memory is organized as 128 words of 8 bits each, making it an ideal choice for storing configuration settings, calibration constants, or small datasets in a wide array of products, from industrial controllers and automotive modules to consumer electronics and communications equipment. Its serial Microwire interface ensures a simple hardware connection, requiring only a few I/O pins from a host microcontroller. This drastically reduces wiring complexity and board space, which is crucial for compact designs.

A key attribute of the 93LC56BT-I/SN is its wide voltage operation range from 2.5V to 5.5V, with a guaranteed performance at 5V. This makes it exceptionally suited for legacy systems and new designs where a stable 5V supply rail is present. The device supports a robust clock frequency of up to 2 MHz, enabling swift data read and write operations. Furthermore, it features built-in hardware and software data protection mechanisms. A dedicated `ORG` pin allows the user to select the memory organization, while specific software instruction sequences are required to initiate a write or erase cycle, safeguarding stored data from accidental corruption.

The IC is offered in the compact 8-lead SOIC (SN) package, which is well-suited for automated assembly processes. Its industrial temperature rating (-40°C to +85°C) ensures reliable operation in environmentally challenging conditions. With its low power consumption during both active and standby modes, it is an excellent choice for power-sensitive applications.

ICGOOODFIND: The Microchip 93LC56BT-I/SN is a highly integrated and reliable serial EEPROM solution. Its 5V operation, simple 3-wire interface, and robust data protection features make it a superior choice for designers seeking to enhance their system's capability with minimal design overhead.

Keywords: Serial EEPROM, Microwire Interface, 5V Operation, Non-Volatile Memory, Data Protection.