11LC020-E/MS

Overview

The Microchip Technology 11LC020-E/MS is a 2 Kbit (256 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, self-timed write cycles, and block write protection. It is housed in an 8-lead MSOP package and rated for industrial temperatures from -40°C to +125°C.

Feature Summary

• Supports the patented UNI/O single I/O serial protocol using Manchester encoding on a dedicated SCIO pin.
• Includes built-in power-on/off data protection circuitry and a write enable latch to prevent accidental writes.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides hardware block write protection allowing configuration to protect none, 1/4, 1/2, or all of the memory array.

Applications

• Microcontroller system data storage
• ASIC configuration memory
• Industrial control systems requiring high reliability

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Automotive temperature grade (-40°C to +125°C). Confirm the 'MS' suffix indicates the 8-lead MSOP package. Ensure the specific part number matches the required density and interface specifications before procurement.

Selection Notes

Select this component when a single-wire interface is required to minimize pin count. Choose the 'E' variant for applications operating in extended temperature ranges up to 125°C. Verify that the host controller can implement the UNI/O Manchester encoding protocol for proper communication.

Part Context

This device belongs to the 11LCXXX family of serial EEPROMs manufactured by Microchip Technology. It shares the same UNI/O interface architecture as other members like the 11LC010 and 11LC040 but offers a specific 2 Kbit capacity. The family is designed for low-power, space-constrained embedded applications.

Replacement Considerations

Direct substitutes include other 11LC020 variants with different temperature grades or packages, such as 11LC020-I/MS for Industrial temperature range. Cross-family replacements require verifying interface compatibility and voltage levels.