11LC020-E/P

Overview

The Microchip Technology 11LC020-E/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 with a maximum clock frequency of 100 kHz. The device operates within a supply voltage range of 2.5 V to 5.5 V and is housed in an 8-lead PDIP package. Designed for automotive applications, it supports an extended temperature range from -40°C to +125°C.

Feature Summary

• Supports the UNI/O single I/O serial interface protocol using Manchester encoding on the SCIO pin.
• Features built-in write protection mechanisms including power-on/off data protection and a write enable latch.
• Includes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides block write protection allowing configuration to protect none, one-quarter, one-half, or all of the memory array.

Applications

• Automotive electronic systems requiring high reliability and extended temperature operation
• Microcontroller-based designs needing non-volatile storage for calibration data
• Industrial control devices utilizing single-wire communication interfaces

Procurement Notes

Verify that the ordering suffix 'P' corresponds to the 8-lead PDIP package type required for your assembly process. Confirm the 'E' suffix indicates the Automotive grade (-40°C to +125°C) rather than Industrial grade. Ensure the 2.5V minimum operating voltage aligns with your system's power rail specifications before finalizing procurement.

Selection Notes

Select this component when a single-wire serial interface is preferred to minimize pin count compared to standard SPI or I2C memories. The 11LC020-E/P is suitable for applications requiring robust noise immunity via Schmitt triggers and high endurance. Consider the 2.5V minimum voltage constraint if operating at lower supply levels, where the 11AA series might be more appropriate.

Part Context

This part belongs to the 11XX family of 1 Kbit through 16 Kbit serial EEPROMs from Microchip Technology. The family shares common features such as the UNI/O interface, page-write buffers, and similar command sets. Variations within the family include different densities (e.g., 11LC010, 11LC040), voltage ranges (11AA vs 11LC), and temperature grades (I vs E).

Replacement Considerations

For equivalent density and interface, consider the 11LC020-I/P for industrial temperature ranges. For lower voltage operation down to 1.8V, the 11AA020 series is available. Note that the 11AA020 is not specified for the extended automotive temperature range provided by the 11LC020-E variant.