AT93C66A-10TI-1.8

Memory IC Overview

The AT93C66A-10TI-1.8 is a 4K-bit (512 x 8 or 256 x 16) serial EEPROM manufactured by Microchip Technology, housed in an 8-ball dBGA2 package. It supports a supply voltage range of 1.8V to 5.5V and operates within an industrial temperature range of -40°C to +85°C. The device utilizes a 3-wire Microwire interface with a maximum clock frequency of 1 MHz at this voltage level. Key electrical parameters include a self-timed write cycle time of 10 ms maximum, standby current of 0.1 µA maximum at 1.8V, and read/write currents up to 2 mA.

Memory IC Feature Summary

• Supports user-selectable internal memory organization for either 8-bit or 16-bit word widths via the ORG pin configuration.
• Features a simple 3-wire serial interface consisting of Chip Select, Shift Clock, Data Input, and Data Output pins.
• Includes self-timed erase and write cycles that automatically transition the device to a ready state without requiring separate erase operations.
• Provides high reliability with specified endurance of one million write cycles and long-term data retention capabilities.

Memory IC Applications

• Industrial and commercial applications requiring low power and low voltage operation
• Systems needing non-volatile storage for calibration data or configuration settings
• Embedded controllers utilizing serial communication interfaces for memory expansion

Memory IC Procurement Notes

Verify the specific ordering suffix matches the required voltage and package type. Confirm the component status as active or end-of-life through official manufacturer channels before finalizing procurement plans. Ensure compatibility with existing board layouts regarding the dBGA2 footprint and thermal requirements.

Memory IC Selection Notes

Select this component when a 4K-bit capacity is required in a compact ball grid array package. The 1.8V operating range makes it suitable for modern low-voltage systems. Consider the 3-wire interface constraints and ensure the host processor can generate the necessary clock and chip select signals for reliable communication.

Memory IC Part Context

This part belongs to the AT93C56A/66A family of serial EEPROMs designed for space-saving applications. The '66' designation indicates the 4K-bit density variant, while the '-1.8' suffix specifies the low-voltage operational range. The 'TI' code identifies the specific 8-ball dBGA2 package configuration used in this ordering code.

Memory IC Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-references with the manufacturer's official replacement guide or selector tool for equivalent packages and specifications.