11AA080T-I/MNY

Overview

The Microchip Technology 11AA080T-I/MNY is an 8 Kbit (1,024 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates within a supply voltage range of 1.8 V to 5.5 V and supports a maximum bus frequency of 100 kHz. The device features a 16-byte page write buffer, industrial temperature ratings (-40°C to +85°C), and high reliability with 1 million erase/write cycles and over 200 years data retention. It is housed in an 8-lead TDFN package.

Feature Summary

• Supports the patented UNI/O single I/O serial protocol using Manchester encoding for clock and data transmission on a single pin.
• Includes built-in power-on/off data protection and a write enable latch to prevent accidental writes.
• Features block write protection allowing configuration to protect none, 1/4, 1/2, or all of the memory array.
• 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
• Low-pin-count sensor data logging
• Device identification and parameter storage

Procurement Notes

Verify the specific suffix 'I/MNY' corresponds to the Industrial temperature range and TDFN-8 package as documented in the official datasheet. Confirm that the application design strictly adheres to the UNI/O protocol timing requirements, particularly regarding start headers and acknowledge sequences. Ensure supply voltage remains within the 1.8 V to 5.5 V operational limits to maintain specified endurance and data retention characteristics.

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 needing low standby current and robust write protection mechanisms. Consider the 16-byte page size limitation for write operations and ensure the master controller can handle the Manchester encoding decoding. Verify compatibility with the target microcontroller's GPIO capabilities for generating the required SCIO signals.

Part Context

This part belongs to the 11AAXXX/11LCXXX family of serial EEPROMs from Microchip Technology. The 'AA' designation indicates support for low-voltage operation down to 1.8 V, distinguishing it from the 'LC' variant which requires a minimum of 2.5 V. The family shares common architectural features including the UNI/O interface and similar command sets, differing primarily in voltage ranges and density options.

Replacement Considerations

Public confirmed substitute part numbers: 11AA080-E/MNY, 11AA080-MS, 11AA080-P, 11AA080-SN, 11AA080-TT, 11AA080-TO, 11AA080-CS.