11AA160T-I/MS

Overview

The Microchip Technology 11AA160T-I/MS is a 16 Kbit (2,048 x 8) serial electrically erasable programmable read-only memory (EEPROM). It utilizes the UNI/O single I/O bus interface with Manchester encoding for clock and data transmission. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports a maximum bit rate of 100 kbps. It features industrial temperature ratings from -40°C to +85°C and is housed in an MSOP-8 surface-mount package.

Feature Summary

• Supports the UNI/O single I/O serial interface protocol using Manchester encoding
• Includes built-in write protection via power-on/off circuitry and a write enable latch
• Features block write protection allowing configuration of none, 1/4, 1/2, or all array segments
• Provides high reliability with one million erase/write cycles and over 200 years of data retention

Applications

• Microcontroller system data storage
• ASIC memory integration
• Industrial control parameter logging

Procurement Notes

Verify that the ordering suffix 'T' corresponds to the reel packaging format specified by the manufacturer. Confirm the 'I' suffix indicates the industrial temperature range (-40°C to +85°C). Ensure the 'MS' suffix matches the required MSOP-8 package type. Cross-reference the full part number against official Microchip documentation to validate electrical characteristics and pinout compatibility before procurement.

Selection Notes

Select this component when a low-pin-count serial EEPROM is required for space-constrained designs. The UNI/O interface reduces I/O usage compared to standard SPI or I2C protocols. Choose this specific variant for applications requiring operation down to 1.8 V and industrial temperature stability. Verify that the master controller can support the Manchester encoding timing requirements for reliable communication.

Part Context

This device belongs to the 11AAXXX/11LCXXX family of serial EEPROMs manufactured by Microchip Technology. The 'AA' prefix denotes devices supporting low-voltage operation starting at 1.8 V, whereas 'LC' variants typically start at 2.5 V. The 160 designation indicates a 16 Kbit density. This family shares common architectural features including page-write buffers and status registers across various densities.

Replacement Considerations

Consult official Microchip documentation for verified substitute part numbers. Generic cross-references are not supported without explicit manufacturer confirmation.