11LC080-E/SN

Overview

The Microchip Technology 11LC080-E/SN is an 8Kbit (1,024 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates within a voltage range of 2.5V to 5.5V and supports a maximum bus frequency of 100 kHz. The device features a 16-byte page write buffer and self-timed write cycles. It is housed in an 8-lead SOIC package and rated for industrial temperature applications 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 block write protection allowing configuration to protect none, one-quarter, one-half, or the entire memory array.
• Features Schmitt trigger inputs for noise suppression and output slope control to minimize ground bounce.
• Provides high reliability with over one million erase/write cycle endurance and data retention exceeding 200 years.

Applications

• Microcontroller system data storage
• ASIC configuration memory
• Industrial control parameter logging

Procurement Notes

Verify that the specific suffix 'E' corresponds to the Automotive temperature grade (-40°C to +125°C) as defined in the official datasheet selection table. Confirm the 'SN' suffix indicates the 8-lead SOIC package type. Ensure compatibility with the master controller's ability to implement the UNI/O Manchester encoding protocol.

Selection Notes

Select this component when a single-wire interface is required to minimize pin count compared to SPI or I2C alternatives. The 11LC080-E variant is suitable for automotive environments requiring extended temperature ranges. Note that the 11AA series offers lower voltage operation starting at 1.8V, whereas this 11LC model requires a minimum of 2.5V.

Part Context

This part belongs to the 11XX family of Serial Electrically Erasable PROMs manufactured by Microchip Technology. The family includes densities ranging from 1Kbit to 16Kbit. The 11LC series specifically denotes devices operating with a supply voltage range of 2.5V to 5.5V, distinct from the 11AA series which supports 1.8V operation.

Replacement Considerations

• 11LC080-I/SN

FAQ

How does the 11LC080 handle clock signals?

The device uses the UNI/O protocol where clock and data are combined into a single serial bit stream (SCIO). The receiver extracts the clock signal internally using Manchester encoding techniques.

What is the function of the Write Enable Latch?

The Write Enable Latch must be set via the WREN instruction before any write operation can be completed. It is automatically reset upon power-up, successful execution of WRDI, or completion of a write cycle.