11LC020T-E/MS

Overview

The Microchip Technology 11LC020T-E/MS is a 2 Kbit (256 x 8) serial EEPROM utilizing the UNI/O single I/O bus interface. It operates within a voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 100 kHz. The device features a 16-byte page-write buffer, self-timed write cycles, and block write protection capabilities. It is housed in an MSOP-8 package and is rated for extended industrial temperature ranges from -40°C to +125°C.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding on the SCIO pin.

Applications

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the extended temperature range (-40°C to +125°C) and 'MS' indicates the MSOP-8 package. Confirm compliance with RoHS standards and Pb-Free requirements as specified in the datasheet. Ensure the selected variant matches the required density and organization for your specific memory allocation needs.

Selection Notes

Select this component when a low-pin-count solution is required for non-volatile data storage in space-constrained designs. The UNI/O interface minimizes microcontroller I/O usage compared to standard SPI or I2C protocols. Consider the 16-byte page buffer size for write efficiency and verify that the system power supply remains stable within the 2.5 V to 5.5 V operating window.

Part Context

This part belongs to the 11LCXXX family of serial EEPROMs, which also includes variants like the 11LC010, 11LC040, and 11LC080. These devices share the same UNI/O interface architecture but differ in memory density and organization. The 'E' suffix denotes automotive-grade reliability and extended temperature performance compared to the standard industrial 'I' grade.

Replacement Considerations

Direct substitutes include other members of the 11LC series such as the 11LC010T-E/MS or 11LC040T-E/MS, provided the memory capacity difference is acceptable. Cross-family replacements require verifying interface compatibility, as the UNI/O protocol differs from standard I2C or SPI implementations.