11AA080T-I/TT

Overview

The Microchip Technology 11AA080T-I/TT 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 and includes built-in write protection mechanisms such as a write enable latch and power-on/off data protection. It offers high reliability with 1,000,000 erase/write cycles endurance and over 200 years of data retention. The component is housed in a 3-lead SOT-23 package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Supports the patented UNI/O single I/O serial protocol using Manchester encoding on a dedicated SCIO pin.
• Includes a STATUS register for monitoring write-in-progress status and configuring block write protection levels.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides hardware-based data protection through power-on/off circuits and a mandatory write enable latch.

Applications

• Microcontroller systems requiring low-pin-count non-volatile memory storage
• Industrial devices needing robust data retention and noise immunity
• Battery-powered applications benefiting from ultra-low standby current consumption

Procurement Notes

Verify that the ordering suffix 'TT' corresponds specifically to the SOT-23-3 package configuration. Confirm the 'I' designation indicates the Industrial temperature range (-40°C to +85°C). Ensure the device variant matches the 1.8V minimum operating voltage requirement, distinguishing it from the 2.5V minimum LC series. Check RoHS compliance documentation for lead-free manufacturing standards.

Selection Notes

Select this part when a single-wire interface is required to minimize PCB trace count and I/O pin usage. Choose the 11AA080T-I/TT for designs needing 8 Kbit capacity with a 16-byte page buffer. It is suitable for environments where moderate speed (100 kHz) is sufficient but low power consumption and high noise immunity are critical priorities.

Part Context

This component belongs to the 11AAXXX family of UNI/O serial EEPROMs manufactured by Microchip Technology. It shares the same interface protocol and functional architecture as other members like the 11AA010 and 11AA160, differing primarily in memory density and organization. The T suffix denotes the specific surface-mount packaging style used in this variant.

Replacement Considerations

Direct substitutes within the same UNI/O family include the 11AA080T-I/SN (SOIC-8) or 11AA080T-I/MS (MSOP-8) for different footprint requirements. For lower density needs, the 11AA020T-I/TT may be considered if 2 Kbit capacity is sufficient.