AT93C56B-SSHM-B

Memory IC Overview

The AT93C56B-SSHM-B is a 2-Kbit (128 x 16 or 256 x 8) three-wire serial EEPROM from Microchip Technology. It operates within a supply voltage range of 1.7V to 5.5V and supports clock frequencies up to 2 MHz at 5V. The device features an industrial temperature range of -40°C to +85°C, 1 million write cycle endurance, and 100-year data retention. It utilizes a self-timed write cycle with a maximum duration of 5 ms.

Memory IC Feature Summary

• Supports user-selectable internal memory organization between x8 and x16 word formats via the ORG pin.
• Includes a Power-on Reset circuit to prevent spurious events during power-up sequences.
• Provides Ready/Busy status output on the DO pin following erase or write operations.

Memory IC Applications

• Industrial and commercial applications requiring low-power operation
• Systems needing non-volatile storage for configuration data
• Embedded controllers utilizing three-wire serial interfaces

Memory IC Procurement Notes

Verify the specific package suffix 'B' against official Microchip documentation to confirm the exact physical footprint and marking details. Ensure the ordering code matches the required voltage grade and temperature range specifications for your application environment.

Memory IC Selection Notes

Select this component when a compact 2-Kbit EEPROM with a three-wire interface is required. Consider the available package options such as SOIC, TSSOP, UDFN, XDFN, and VFBGA based on board space constraints. Verify that the system voltage aligns with the 1.7V to 5.5V operating range.

Memory IC Part Context

This part belongs to the AT93C56B/AT93C66B family of three-wire serial EEPROMs. The AT93C56B variant specifically provides 2-Kbit capacity, while the AT93C66B offers 4-Kbit. Both share identical interface protocols and electrical characteristics, differing primarily in memory depth and address bit requirements.

Memory IC Replacement Considerations

Compatible substitutes include other parts within the AT93C56B/AT93C66B family, such as the AT93C56B-XHM-T or AT93C56B-MAHM-E, provided they match the required package type and voltage specifications.