11AA010T-I/TT

Overview

The Microchip Technology 11AA010T-I/TT is a 1 Kbit (128 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates within a supply voltage range of 1.8V to 5.5V and supports a maximum clock frequency of 100 kHz. The device features industrial temperature ratings from -40°C to +85°C and is housed in a SOT-23-3 surface-mount package.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for combined clock and data transmission on the SCIO pin.
• Features low-power CMOS technology with typical active current of 1 mA and maximum standby current of 1 µA at industrial temperatures.
• Includes built-in write protection mechanisms such as power-on/off data protection circuits, write enable latches, and configurable block write protection.

Applications

• Interfacing with microcontrollers or ASICs requiring a single discrete I/O line for memory access
• Industrial applications necessitating noise suppression via Schmitt trigger inputs
• Systems requiring output slope control to eliminate ground bounce effects

Procurement Notes

Verify the specific ordering suffix 'TT' corresponds to the SOT-23-3 package configuration. Confirm that the 'I' designation matches the required industrial temperature range of -40°C to +85°C. Ensure the 1.8V minimum operating voltage aligns with the system's power supply capabilities, as this distinguishes it from the 2.5V minimum 11LC series.

Selection Notes

Select this component when a single-wire interface is preferred over standard SPI or I2C protocols to minimize pin count. The 11AA010T-I/TT is suitable for designs requiring operation down to 1.8V. Consider the 16-byte page-write buffer for efficient data writing. Verify compatibility with the master device's ability to generate the required UNI/O start headers and acknowledge sequences.

Part Context

This part belongs to the 11AA010 family of 1 Kbit serial EEPROMs manufactured by Microchip Technology. It shares the same core architecture and UNI/O interface as other members of the 11XX series, differing primarily in density and package options. The device is designed for high reliability with endurance ratings of one million erase/write cycles.

Replacement Considerations

The 11LC010T-I/TT serves as a functional substitute but requires a minimum supply voltage of 2.5V instead of 1.8V. Other packages within the 11AA010 family, such as TO-92 or MSOP, offer identical electrical characteristics but require footprint modifications.