11AA010T-I/MS

Overview

The Microchip Technology 11AA010T-I/MS is a 1 Kbit (128 x 8) serial EEPROM utilizing the UNI/O single I/O bus. It operates within a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges (-40°C to +85°C). The device features a 16-byte page-write buffer, self-timed write cycles, and Schmitt trigger inputs for noise suppression. It includes built-in write protection via power-on/off data protection circuits and a status register for monitoring write operations.

Feature Summary

• Supports the patented UNI/O single I/O serial interface using Manchester encoding
• Features low-power CMOS technology with typical active current of 1 mA and maximum standby current of 1 µA
• Includes a STATUS register for monitoring write enable latch and write-in-progress states
• Provides block write protection capabilities allowing protection of none, 1/4, 1/2, or all of the array

Applications

• Microcontroller system configuration storage
• Industrial sensor data logging
• Low-pin-count embedded memory applications
• Battery-powered devices requiring low standby current

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'MS' indicates the 8-lead MSOP package. Confirm the 'T' suffix denotes tape and reel packaging if required for automated assembly. Ensure the specific part number matches the 1.8V operating voltage requirement, as distinct from the 2.5V minimum 11LC series.

Selection Notes

Select this component when a single I/O pin constraint exists, eliminating the need for separate clock and data lines found in SPI or I2C interfaces. Choose the 11AA010 over the 11LC010 variant specifically for applications requiring operation down to 1.8V. Consider the 16-byte page buffer size for write efficiency and verify that the 1Kbit capacity meets the non-volatile storage requirements.

Part Context

This device belongs to the 11XX family of serial EEPROMs, which share a common UNI/O protocol and instruction set. The family spans densities from 1 Kbit to 16 Kbit. The 11AA prefix designates the 1.8V compatible version, while the 11LC prefix denotes the 2.5V minimum version. All variants utilize identical command structures and physical pinouts across supported packages.

Replacement Considerations

The 11LC010-I/MS is a functional substitute but requires a minimum supply voltage of 2.5V instead of 1.8V. Other 11AA010 variants such as 11AA010-I/P or 11AA010-I/SN offer different package types but maintain electrical compatibility.