AT93C56AY1-10YU-1.8

Memory IC Overview

The AT93C56AY1-10YU-1.8 is a 2K-bit (256 x 8 or 128 x 16) serial electrically erasable programmable read-only memory (EEPROM) manufactured by Microchip Technology. It operates within a supply voltage range of 1.8V to 5.5V and supports a clock frequency up to 2 MHz at 5V. The device utilizes a three-wire serial interface for data input, output, and clocking. It features self-timed write cycles with a maximum duration of 10 ms and offers high reliability with an endurance of 1 million write cycles and 100-year data retention. The component is housed in an 8-lead Miniature Array Package (MAP).

Memory IC Feature Summary

• Supports user-selectable internal organization for either 8-bit or 16-bit word widths via the ORG pin.
• Features a simple three-wire serial communication interface consisting of Chip Select, Shift Clock, Data Input, and Data Output pins.
• Includes self-timed erase and write cycles that do not require separate erase operations before programming.
• Provides sequential read operation capability allowing continuous data streaming without re-clocking dummy bits between addresses.

Memory IC Applications

• Industrial applications requiring low-power and low-voltage operations.
• Commercial applications utilizing serial EEPROM storage.
• Automotive applications optimized for low-power environments.

Memory IC Procurement Notes

Verify the specific package type and voltage option suffixes against the official ordering information table. Confirm RoHS compliance status as indicated by the 'U' designation in the part number. Check for any recent product change notifications regarding manufacturing location or assembly processes. Ensure the design phase accounts for the 'Not Recommended for New Design' status if applicable to current procurement strategies.

Memory IC Selection Notes

Select this component when a 2K-bit non-volatile memory solution is required with a three-wire serial interface. Consider the 1.8V to 5.5V operating range for compatibility with various logic levels. Evaluate the MAP package dimensions for space-constrained PCB layouts. Verify that the 10 ms write cycle time meets the system's timing requirements for data integrity.

Memory IC Part Context

This device belongs to the AT93C56A/66A family of serial EEPROMs. The AT93C56A variant specifically provides 2048 bits of storage capacity. It is designed to replace older parallel EEPROM technologies with a more compact serial interface. The family includes variants with different voltage options and package types to suit diverse industrial and commercial needs.

Memory IC Replacement Considerations

The datasheet explicitly states that the AT93C56A is not recommended for new designs and has been replaced by the AT93C56B or AT93C66B series. Engineers should evaluate these successor parts for new projects to ensure long-term availability and updated specifications.