11LC040T-I/MNY

Overview

The Microchip Technology 11LC040T-I/MNY is a 4 Kbit (512 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates within a voltage range of 2.5 V to 5.5 V and supports a maximum bus frequency of 100 kHz. The device features a 16-byte page write buffer, Schmitt trigger inputs for noise suppression, and output slope control. It offers high reliability with 1,000,000 erase/write cycles endurance and data retention exceeding 200 years. The component is housed in an 8-lead TDFN package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for combined clock and data transmission on the SCIO pin.
• Includes built-in write protection mechanisms such as power-on/off data protection circuitry and a configurable block write protection feature.
• Features a 16-byte page-write buffer to allow efficient sequential data writing and internal address pointer management.

Applications

• Microcontroller-based systems requiring non-volatile storage for configuration parameters or calibration data.
• Industrial control applications needing reliable data retention under varying environmental conditions.
• Low-pin-count embedded designs where minimizing I/O line usage is critical.

Procurement Notes

Verify that the ordering suffix 'MNY' corresponds specifically to the TDFN-8 package type and tape-and-reel packaging format. Confirm the 'I' designation indicates the Industrial temperature range (-40°C to +85°C). Ensure compatibility with the UNI/O protocol implementation in the host system before finalizing procurement.

Selection Notes

Select this part when a single-wire interface is required to save microcontroller pins. Choose the 11LC040 variant for 4 Kbit capacity needs. The Industrial grade ('I') is suitable for standard commercial and industrial environments. Verify that the host controller can generate the specific Manchester-encoded timing required by the UNI/O protocol.

Part Context

This component belongs to the 11LCXXX family of serial EEPROMs from Microchip Technology. The family shares common architectural features including the UNI/O interface and similar command sets. Variants differ primarily in memory density, operating voltage ranges, and package options. This specific model represents the 4 Kbit density option in the industrial temperature grade.

Replacement Considerations

Compatible substitutes within the same family include the 11LC040T-E/MNY for extended automotive temperature ranges or other packages like MSOP/SOIC if lead availability dictates. Cross-family replacements require verification of voltage compatibility and interface protocol support.