11LC020-I/P

Overview

The Microchip Technology 11LC020-I/P is a 2 Kbit (256 x 8) serial electrically erasable programmable read-only memory (EEPROM). It utilizes the UNI/O single I/O bus interface for communication. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports an industrial temperature range from -40°C to +85°C. It features a maximum bit rate of 100 kbps, a 16-byte page-write buffer, and built-in write protection mechanisms including power-on/off data protection.

Feature Summary

• Supports the UNI/O single I/O serial interface bus using Manchester encoding
• Includes a 16-byte page-write buffer for efficient data writing
• Features block write protection allowing configuration of none, 1/4, 1/2, or all array sections
• Incorporates built-in write protection with power-on/off data protection circuitry

Applications

• Microcontroller system data storage
• ASIC configuration memory
• Industrial control systems requiring low pin count interfaces

Procurement Notes

Verify the specific ordering suffix 'I/P' corresponds to the Industrial temperature grade (-40°C to +85°C) and PDIP-8 package. Confirm that the 'LC' prefix indicates the 2.5V to 5.5V operating voltage range, distinct from the 'AA' series which supports lower voltages. Ensure compatibility with host controllers capable of generating the required UNI/O Manchester encoded signals.

Selection Notes

Select this component when a single-pin serial interface is required to minimize PCB trace count. It is suitable for applications needing moderate density (2 Kbit) with robust write protection features. Consider the 16-byte page size limitation for write operations. Verify that the host system voltage aligns with the 2.5V to 5.5V operational range specified for the LC series.

Part Context

The 11LC020-I/P belongs to the 11XX family of serial EEPROMs from Microchip Technology. This family includes variants with densities ranging from 1 Kbit to 16 Kbit. The 'LC' designation specifically denotes devices optimized for 2.5V to 5.5V operation, while the 'AA' designation covers 1.8V to 5.5V operation. All members share the same UNI/O protocol and physical interface characteristics.

Replacement Considerations

The 11AA020-I/P is a pin-compatible alternative within the same datasheet family, differing primarily in its support for lower supply voltages down to 1.8V.