93AA66C/W15K

Memory IC Overview

The Microchip Technology 93AA66C/W15K is a 4Kbit low-voltage serial Electrically Erasable PROM (EEPROM) utilizing advanced CMOS technology. It features a Microwire-compatible 3-wire serial interface and supports a supply voltage range of 1.8V to 5.5V. The device includes an ORG pin that allows selection between 512 x 8-bit and 256 x 16-bit memory organizations. It offers industrial temperature operation, self-timed erase/write cycles, and power-on/off data protection.

Memory IC Feature Summary

• ORG pin enables flexible configuration between 8-bit and 16-bit word sizes
• Industry standard 3-wire Microwire serial I/O interface
• Self-timed erase and write cycles with automatic erase before write all operations
• Power-on/off data protection circuitry prevents accidental programming during power transitions

Memory IC Applications

• Low-power nonvolatile memory applications
• Industrial systems requiring reliable data storage
• Embedded devices needing compact serial EEPROM solutions

Memory IC Procurement Notes

Verify the specific suffix W15K against official documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status and lead-free finish details directly from the manufacturer datasheet prior to ordering. Ensure the selected variant matches the required operating temperature range for the intended application environment.

Memory IC Selection Notes

Select this component when a configurable memory organization is required within a low-voltage system. The ORG pin provides design flexibility for both 8-bit and 16-bit architectures without changing hardware. Verify that the 1.8V minimum supply voltage aligns with the system power rails and that the Microwire interface is compatible with the host controller.

Memory IC Part Context

This part belongs to the 93XX66A/B/C series of 4Kbit serial EEPROMs from Microchip Technology. The 'C' designation indicates the presence of the ORG pin for word size selection, distinguishing it from the fixed 8-bit 'A' and fixed 16-bit 'B' variants. The series utilizes low-power CMOS technology suitable for battery-operated and space-constrained designs.

Memory IC Replacement Considerations

Compatible substitutes include other 93AA66C variants with different packages or temperature grades, such as 93AA66C-I/SN or 93AA66C-I/MC. Ensure the replacement maintains the same 1.8V-5.5V operating range and Microwire interface compatibility.