11AA020T-I/MNY

Overview

The Microchip Technology 11AA020T-I/MNY 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 1.8 V to 5.5 V and supports a maximum bit rate of 100 kbps. It features industrial temperature ratings from -40°C to +85°C and is housed in an MSOP-8 package.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding
• Includes built-in write protection with power-on/off data protection circuitry
• Features Schmitt trigger inputs for noise suppression and output slope control
• Provides block write protection capabilities for array security

Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded devices
• Low-pin-count sensor interface memory
• Industrial control parameter logging

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with the host controller's UNI/O software implementation. Confirm RoHS compliance status through the manufacturer's current datasheet or certification documents prior to final procurement decisions.

Selection Notes

Select this component when a low-pin-count, single-wire serial EEPROM is required for space-constrained designs. It is suitable for applications needing reliable non-volatile storage with minimal interface overhead. Consider the 1.8V minimum operating voltage for low-power systems and verify that the host microcontroller can support the UNI/O timing requirements.

Part Context

This part belongs to the 11AAXXX/11LCXXX family of serial EEPROMs from Microchip Technology. The 'AA' designation indicates operation down to 1.8V, while 'I' specifies the industrial temperature range. The 'MS' suffix denotes the MSOP-8 package, and 'MN' typically refers to the tape and reel packaging variant for surface-mount assembly.

Replacement Considerations

Compatible substitutes within the same family include the 11AA020T-I/MS and 11AA020T-I/TN. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with the 11LC020 series if the application requires a higher minimum voltage threshold.