11AA010-I/MS

Overview

The Microchip Technology 11AA010-I/MS is a 1 Kbit (128 x 8) serial EEPROM utilizing the UNI/O single-wire interface. It operates on a supply voltage range of 1.8V to 5.5V with a maximum clock frequency of 100 kHz. The device features a 16-byte page-write buffer, self-timed write cycles, and built-in power-on/off data protection. It supports industrial temperature ranges (-40°C to +85°C) and offers high reliability with 1 million erase/write cycles and over 200 years of data retention.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for combined clock and data transmission.
• Includes a STATUS register providing real-time monitoring of write operations and configurable block write protection.
• Features low-power CMOS technology with typical active current of 1 mA and maximum standby current of 1 µA.
• Incorporates Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Applications

• Microcontroller system configuration storage
• Calibration data retention in industrial sensors
• Parameter logging in battery-powered devices
• Device identification and security code storage

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'MS' denotes the 8-lead MSOP package. Confirm the specific density matches the 11AA010 designation rather than other family members like 11LC010 or 11AA020. Ensure the application circuitry supports the 1.8V minimum operating voltage required by the AA series.

Selection Notes

Select this component when a single-wire interface is required to minimize pin count compared to standard SPI or I2C alternatives. Choose the 11AA010 specifically for its 1.8V low-voltage capability, distinguishing it from the 11LC010 which requires a minimum of 2.5V. Consider the 16-byte page buffer size for write efficiency and verify that the 1Kbit capacity meets the non-volatile memory requirements without excessive waste.

Part Context

This part belongs to the 11XX family of UNI/O serial EEPROMs manufactured by Microchip Technology. The family includes variants ranging from 1 Kbit to 16 Kbit, such as the 11AA020 and 11AA160. The 11AA series is distinguished by its ability to operate at voltages as low as 1.8V, whereas the parallel 11LC series starts at 2.5V. All parts share the same core architecture and command set.

Replacement Considerations

Direct substitutes within the same package and interface include other 11AA010 variants with different suffixes (e.g., SN for SOIC). Cross-family replacements like the 11LC010 are electrically compatible but require a higher minimum supply voltage. Verify that any replacement maintains the 1.8V operating range if low-voltage operation is critical.