93LC56C-I/ST

Memory IC Overview

The Microchip Technology 93LC56C-I/ST is a 2Kbit low-voltage serial Electrically Erasable PROM (EEPROM) housed in an 8-lead TSSOP package. It utilizes Microwire-compatible 3-Wire Serial I/O with a maximum clock frequency of 3 MHz and access time of 200 ns. The device supports word-selectable organization via the ORG pin, allowing for either 256 x 8-bit or 128 x 16-bit configurations. Operating voltage ranges from 4.5 V to 5.5 V, with an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Word-selectable memory organization enabled by external logic levels on the ORG pin
• Self-timed erase and write cycles with automatic Erase All before Write All functionality
• Power-on/off data protection circuitry to prevent data corruption during power transitions
• Ready/Busy status signal output for monitoring programming completion

Memory IC Applications

• Low-power nonvolatile memory storage applications
• Industrial systems requiring Microwire compatible serial communication
• Embedded devices needing configurable 8-bit or 16-bit data word sizes

Memory IC Procurement Notes

Verify that the supply voltage meets the minimum requirement of 4.5 V, as this specific 'C' variant does not support lower voltages like the 'AA' or 'LC' series. Confirm the ORG pin configuration matches the required memory organization. Ensure the industrial temperature grade (-40°C to +85°C) aligns with the operational environment specifications.

Memory IC Selection Notes

Select this component when a fixed 8-bit or 16-bit interface is insufficient and dynamic configuration via the ORG pin is required. It is suitable for designs operating strictly within the 4.5 V to 5.5 V range. Choose this over 'A' or 'B' versions if hardware flexibility for word size selection is necessary without changing part numbers.

Memory IC Part Context

This device belongs to the 93XX56 family of 2Kbit EEPROMs from Microchip Technology. It shares functional similarities with the 93LC56C and 93AA56C but differs in its specific operating voltage requirements. The 'I' suffix denotes the industrial temperature rating, while '/ST' indicates the 8-lead Thin Shrink Small Outline Package.

Memory IC Replacement Considerations

Public confirmed substitute part numbers include 93LC56C-I/SN and 93LC56C-I/P. These alternatives offer identical electrical characteristics and functionality but differ in physical packaging (SOIC and PDIP respectively). Verify pin compatibility and thermal performance when substituting.