Microchip Technology

93C66B-I/SN

93C66B-I/SN Description

The 93C66B-I/SN from Microchip Technology is a 4Kbit (256 x 16) serial EEPROM with a Microwire interface, designed for reliable non-volatile data storage in embedded systems. Operating within a 4.5V to 5.5V supply range, this surface-mount IC offers a 2MHz clock frequency and a fast 2ms write cycle time for word or page operations. Packaged in an 8-SOIC tube, it is RoHS3 compliant and rated for MSL 3 (168 hours) moisture sensitivity, ensuring compatibility with modern manufacturing processes. Its EAR99 and REACH unaffected status simplifies global logistics.

93C66B-I/SN Features

• High-Speed Performance: 2MHz clock frequency enables rapid data access, ideal for time-critical applications.
• Low-Power EEPROM: Optimized for 5V systems, balancing power efficiency with robust data retention.
• Microwire Interface: Simplified serial communication reduces PCB complexity versus parallel EEPROMs.
• Endurance & Reliability: Supports high write-cycle endurance with a 2ms write time, ensuring data integrity.
• Industrial Compliance: RoHS3 and REACH compliance meets stringent environmental standards.
• Compact Form Factor: 8-SOIC package saves board space, suitable for space-constrained designs.

93C66B-I/SN Applications

• Automotive Systems: Stores calibration data, VINs, or event logs in ECUs and sensors.
• Consumer Electronics: Retains user settings in smart appliances, set-top boxes, and IoT devices.
• Industrial Controls: Safeguards configuration parameters in PLCs, motor drives, and HVAC systems.
• Medical Devices: Secures firmware or calibration data in portable diagnostic equipment.
• Telecom Infrastructure: Maintains critical routing tables or firmware backups in networking hardware.

Conclusion of 93C66B-I/SN

The 93C66B-I/SN stands out for its speed, reliability, and ease of integration, making it a preferred choice for applications demanding non-volatile memory with minimal footprint. Its Microwire interface and industrial-grade robustness offer a competitive edge over parallel EEPROMs or slower I²C alternatives. Whether in automotive, industrial, or consumer systems, this EEPROM delivers consistent performance where data persistence is critical.