93LC66C-I/SN

Memory IC Overview

The Microchip Technology 93LC66C-I/SN is a 4Kbit low-voltage serial EEPROM housed in an 8-lead SOIC package. It features Microwire-compatible 3-wire serial I/O and supports word-selectable organization via the ORG pin, allowing configuration as either 512 x 8-bit or 256 x 16-bit memory arrays. The device operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 3 MHz at higher voltages. Designed for industrial applications, it functions reliably across temperatures from -40°C to +85°C.

Memory IC Feature Summary

• Configurable memory architecture selectable between 8-bit and 16-bit word sizes using the external ORG pin
• Integrated power-on/off data protection circuitry prevents data corruption during voltage fluctuations
• Self-timed erase and write cycles with automatic Erase All (ERAL) functionality prior to Write All operations
• Ready/Busy status signal output on the DO pin allows real-time monitoring of programming completion

Memory IC Applications

• Industrial control systems requiring nonvolatile parameter storage
• Low-power embedded devices needing compact serial memory solutions
• Automotive electronics operating under variable temperature conditions
• Consumer appliances storing calibration data or user settings

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance and Pb-free status if environmental regulations apply. Ensure the design accommodates the 3-wire interface timing requirements. Check for any specific automotive qualification requirements if used in vehicle applications. Validate power supply stability to meet minimum voltage thresholds for reliable operation.

Memory IC Selection Notes

Choose this component when a small footprint serial EEPROM is needed with flexible word size options. The 93LC66C variant is suitable for designs requiring both 8-bit and 16-bit compatibility through hardware selection. Consider the industrial temperature range for environments exceeding standard commercial limits. Evaluate the low standby current for battery-powered applications where power conservation is critical.

Memory IC Part Context

This part belongs to the 93XX66 series of 4Kbit Microwire serial EEPROMs from Microchip Technology. The 'C' designation indicates the presence of the ORG pin for dynamic memory organization selection. The '-I' suffix specifies the Industrial temperature rating, while '/SN' denotes the 8-lead Small Outline Integrated Circuit (SOIC) package format.

Memory IC Replacement Considerations

Compatible substitutes include other members of the 93LC66 family such as 93LC66A or 93LC66B, provided the fixed word size meets system requirements. Cross-family replacements like 93AA66C or 93C66C are viable if their respective voltage ranges align with the application's power supply specifications.