The 93LC86CT-I/MC: A Robust 16Kb Serial EEPROM for Embedded Systems

In the realm of embedded systems and consumer electronics, the need for reliable, non-volatile memory for storing configuration data, calibration constants, or event logs is paramount. The Microchip 93LC86CT-I/MC stands as a proven and versatile solution, offering 16 kilobits (2K x 8 or 1K x 16) of serial electrically erasable programmable read-only memory (EEPROM). This device provides a critical bridge between the volatile working memory of a microcontroller and the need for permanent data storage.

A key feature of the 93LC86CT-I/MC is its simple and efficient 3-wire serial interface (comprising Chip Select, Clock, and Data I/O lines), which is compatible with Microwire protocols. This interface allows the chip to be connected to a host microcontroller with minimal I/O pin usage, making it ideal for space-constrained and cost-sensitive applications. Its low power consumption further enhances its suitability for battery-powered devices.

The memory is organized internally, allowing it to operate in either 8-bit or 16-bit mode, providing design flexibility. It boasts a remarkable endurance of 1 million erase/write cycles and a data retention period of over 200 years, ensuring data integrity and long-term reliability. The device supports a wide voltage range (2.5V to 5.5V) and is specified over the industrial temperature range (-40°C to +85°C), guaranteeing stable performance in demanding environments.

Housed in a space-saving 8-pin DFN, PDIP, or SOIC package, the 93LC86CT-I/MC is commonly found in a vast array of products, including automotive systems, industrial controls, telecommunications equipment, and modern appliances.

ICGOODFIND: The Microchip 93LC86CT-I/MC remains a highly dependable and widely adopted component for designers seeking a low-pin-count, high-endurance, non-volatile memory solution. Its proven architecture, Microwire compatibility, and robust performance characteristics make it a default choice for countless applications requiring small-to-medium amounts of reliable data storage.

Keywords: Serial EEPROM, Non-volatile Memory, Microwire Interface, Embedded Systems, Data Storage.