Microchip 93LC56B-I/SN: A 2Kb Microwire Serial EEPROM for Embedded Systems

In the realm of embedded systems design, the need for reliable, non-volatile memory for data storage is paramount. The Microchip 93LC56B-I/SN stands out as a robust and efficient solution, offering 2Kbits (256 x 8 or 128 x 16) of serial Electrically Erasable Programmable Read-Only Memory (EEPROM). This device is engineered to serve a wide array of applications, from storing calibration data and configuration parameters to logging operational events in systems ranging from industrial automation and automotive electronics to consumer appliances.

A key feature of the 93LC56B is its utilization of the Microwire serial interface, a synchronous three-wire protocol comprising Chip Select (CS), Serial Clock (SK), and Data Input/Output (DI/DO) lines. This simple interface minimizes the number of I/O pins required from the host microcontroller, making it an ideal choice for space-constrained and cost-sensitive designs. The device supports both 8-bit and 16-bit instruction and data word formats, providing flexibility for different system architectures.

The 93LC56B is designed for high endurance and long-term data retention. It boasts a minimum endurance of 1,000,000 erase/write cycles per memory location and can retain data for over 200 years, ensuring the integrity of critical information throughout the product's lifespan. Its operation is optimized for low power consumption, featuring a standby current of just 1 µA (max) and an active current of 2 mA (max), which is crucial for battery-powered applications.

Housed in a compact 8-lead SOIC (SN) package, the 93LC56B-I/SN is designed for automated assembly and offers a industrial temperature range (-40°C to +85°C), guaranteeing stable performance in harsh environments. Integrated functionalities such as built-in erase/write enable and disable instructions and a sequential read operation further simplify software control and enhance data security.

ICGOODFIND: The Microchip 93LC56B-I/SN is a quintessential component for embedded storage, offering a perfect blend of interface simplicity, proven reliability, and low-power operation. Its compact form factor and robust design make it a go-to EEPROM for engineers seeking a dependable memory solution for a multitude of embedded applications.

Keywords: Microwire Serial EEPROM, Non-volatile Memory, Embedded Systems, Low Power Consumption, SOIC Package.