11AA010T-I/SN

Overview

The Microchip Technology 11AA010T-I/SN is a 1 Kbit (128 x 8) serial EEPROM utilizing the UNI/O single I/O bus interface. It operates within a supply voltage range of 1.8 V to 5.5 V and supports a maximum clock frequency of 100 kHz. The device features Schmitt trigger inputs for noise suppression, output slope control to eliminate ground bounce, and a 16-byte page-write buffer. It offers high reliability with 1,000,000 erase/write cycles endurance and data retention exceeding 200 years. The component is housed in an 8-lead SOIC package and functions within an industrial temperature range of -40°C to +85°C.

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.
• Includes built-in write protection mechanisms such as power-on/off data protection circuitry and a write enable latch.
• Features a STATUS register allowing dynamic monitoring of write-in-progress status and configurable block write protection.
• Utilizes low-power CMOS technology with typical active current of 1 mA and maximum standby current of 1 µA.

Applications

• Interfacing with microcontrollers requiring minimal I/O pin usage for non-volatile data storage
• Industrial systems needing robust noise immunity via Schmitt trigger inputs
• Low-power embedded applications requiring extended data retention

Procurement Notes

Verify that the specific ordering suffix 'SN' corresponds to the 8-lead SOIC package type required for your PCB layout. Confirm the 'I' designation matches the industrial temperature range specifications (-40°C to +85°C). Ensure the 1.8V minimum operating voltage aligns with your system's supply rails, as this distinguishes it from the 2.5V minimum LC series variants.

Selection Notes

Select this part when a single-pin serial interface is preferred over standard I2C or SPI protocols to conserve GPIO resources. Choose the 11AA010T-I/SN specifically for its 1.8V low-voltage capability, which is not available in the 11LC010 family. Consider the 16-byte page buffer for efficient sequential writes, but ensure application logic prevents crossing physical page boundaries during write operations.

Part Context

This component belongs to the 11XX family of UNI/O serial EEPROMs manufactured by Microchip Technology. The family includes various densities ranging from 1 Kbit to 16 Kbit, with both AA (1.8V) and LC (2.5V) voltage variants. The 11AA010 represents the entry-level density option in the low-voltage AA series, designed for cost-sensitive and space-constrained applications.

Replacement Considerations

The 11LC010T-I/SN serves as a functional substitute if the system supply voltage does not drop below 2.5V. Other density options within the same package, such as the 11AA020T-I/SN or 11AA040T-I/SN, may be used if higher memory capacity is required without changing the footprint.