11LC020T-I/SN

Overview

The Microchip Technology 11LC020T-I/SN is a 2 Kbit (256 x 8) serial electrically erasable PROM utilizing the UNI/O single I/O bus interface. It operates within a supply 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 8-lead SOIC package and rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding on the SCIO pin.
• Includes built-in power-on/off data protection circuitry and a write enable latch for array security.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides high reliability with one million erase/write cycle endurance and over 200 years of data retention.

Applications

• Interfacing with microcontrollers requiring low-pin-count non-volatile storage
• ASIC memory expansion via discrete I/O lines
• Industrial control systems operating within specified temperature ranges

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'SN' denotes the 8-lead SOIC package. Confirm the specific density matches the 2 Kbit requirement, as the family includes varying capacities. 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 serial interface is required to minimize pin count compared to standard SPI or I2C devices. Choose the 11LC020 variant specifically for 2 Kbit capacity needs. Consider the Automotive grade 'E' suffix if operation beyond +85°C is necessary, though this part is designated for Industrial use.

Part Context

This device belongs to the 11LCXXX family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 11AA series but differs in minimum operating voltage requirements. The family utilizes a common instruction set and bus protocol across various densities ranging from 1 Kbit to 16 Kbit.

Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.