11LC020-E/SN

Overview

The Microchip Technology 11LC020-E/SN is a 2 Kbit serial EEPROM featuring a 256 x 8 organization. It utilizes the UNI/O single I/O bus interface with a maximum clock frequency of 100 kHz. The device operates within a supply voltage range of 2.5 V to 5.5 V and is housed in an 8-lead MSOP package. Designed for automotive applications, it supports an extended temperature range from -40°C to +125°C. Key specifications include a data retention period exceeding 200 years and endurance rated at 1,000,000 erase/write cycles.

Feature Summary

• Supports the UNI/O single I/O serial interface protocol using Manchester encoding on the SCIO pin.
• Includes built-in write protection mechanisms such as power-on/off data protection and a write enable latch.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides block write protection allowing configuration to protect none, one-quarter, one-half, or all of the memory array.

Applications

• Automotive electronic systems requiring high reliability and extended temperature operation
• Microcontroller-based designs needing non-volatile data storage via a single I/O line
• Industrial control applications utilizing low-pin-count serial communication

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Automotive temperature grade (-40°C to +125°C) and 'SN' indicates the SOIC package, while confirming the datasheet DS22067J applies to the specific variant requested. Ensure compatibility with the UNI/O protocol requirements for the master controller. Check for RoHS compliance status and confirm lead-free manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a single-wire serial interface is required to minimize pin count on the host microcontroller. Choose the Automotive grade version if the application environment exceeds standard industrial temperature limits. Consider the 16-byte page-write buffer capability for efficient data writing operations. Verify that the 2.5 V minimum supply voltage aligns with the system's power rail availability.

Part Context

This device belongs to the 11XX family of serial EEPROMs manufactured by Microchip Technology. The family includes variants with densities ranging from 1 Kbit to 16 Kbit. These devices are designed for applications requiring robust non-volatile memory with simple serial connectivity. The 11LC series specifically targets higher voltage ranges compared to the 11AA series.

Replacement Considerations

Consult the manufacturer's documentation for direct cross-reference equivalents. Verify pinout compatibility and electrical characteristics against alternative UNI/O compatible EEPROMs. Ensure substitute parts support the same automotive temperature rating and package dimensions for mechanical fit.