11LC080-I/SN

Overview

The Microchip Technology 11LC080-I/SN is an 8Kbit (1,024 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates within a supply 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 with a typical duration of 5 ms. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +85°C and is housed in an 8-lead SOIC package.

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 and a write enable latch to prevent accidental writes
• Features configurable block write protection allowing selection of none, 1/4, 1/2, or all array segments
• Utilizes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce

Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded devices
• Parameter logging in low-pin-count sensors
• Device identification and security code storage

Procurement Notes

Verify that the specific part number suffix corresponds to the SOIC-8 package and Industrial temperature grade. Confirm that the design utilizes a microcontroller capable of generating the required UNI/O Manchester encoded bit stream. Ensure the power supply remains stable within the 2.5V to 5.5V range to maintain data integrity during write operations.

Selection Notes

Select this component when a single-wire interface is required to minimize PCB trace count and pin usage. It is suitable for applications where moderate speed is acceptable but low pin count is critical. Consider the 16-byte page buffer size for efficient data writing. Verify that the host controller can handle the specific acknowledge timing requirements of the UNI/O protocol.

Part Context

This device belongs to the 11LCXXX family of serial EEPROMs from Microchip Technology. It shares the same UNI/O interface architecture as other members like the 11LC010 and 11LC160, differing primarily in memory density. The 'I' designation indicates the industrial temperature rating, while 'SN' specifies the 8-lead Small Outline Integrated Circuit package type.

Replacement Considerations

Direct replacements include other 11LC080 variants such as 11LC080-I/P for PDIP packaging or 11LC080-I/MS for MSOP packaging. Cross-family substitutes like the 11AA080 offer similar functionality but support lower voltage operation down to 1.8V.