11AA160-I/SN

Overview

The Microchip Technology 11AA160-I/SN is a 16 Kbit (2,048 x 8) serial EEPROM utilizing the UNI/O single I/O bus. It operates within a voltage range of 1.8V to 5.5V and supports a maximum clock frequency of 100 kHz. The device features a 16-byte page-write buffer, self-timed write cycles, and industrial temperature ratings (-40°C to +85°C). It includes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Feature Summary

• Supports the patented UNI/O single I/O serial interface using Manchester encoding
• Features built-in power-on/off data protection and write enable latch mechanisms
• Includes configurable block write protection for none, 1/4, 1/2, or all array sections
• Utilizes low-power CMOS technology with typical active current of 1 mA and maximum standby current of 1 µA

Applications

• Microcontroller system configuration storage
• Industrial sensor calibration data retention
• Embedded device parameter logging

Procurement Notes

Verify that the ordering suffix 'SN' corresponds to the SOIC-8 package type as specified in the datasheet. Confirm the 'I' suffix indicates the Industrial temperature range (-40°C to +85°C). Ensure compatibility with the 1.8V minimum supply voltage requirement for the 11AA series compared to the 2.5V minimum for the 11LC series.

Selection Notes

Select this component when a single-pin serial interface is required to minimize pin count on the host microcontroller. Choose the 11AA160 over the 11LC160 if operation below 2.5V is necessary, as the AA series supports 1.8V. Consider the 11AA161 variant if a different hardwired device address (0xA1) is needed to avoid conflicts on the same bus.

Part Context

This part belongs to the 11XX family of serial EEPROMs, which offers densities from 1 Kbit to 16 Kbit. The family shares common electrical characteristics and command sets, differing primarily in density and minimum operating voltage between the AA and LC sub-series. The 11AA160 represents the highest density option within the 1.8V capable AA series.

Replacement Considerations

The 11LC160-I/SN is a functional substitute but requires a minimum supply voltage of 2.5V. The 11AA161-I/SN serves as an alternative if a distinct device address (0xA1) is required for bus arbitration.