11AA02E64-I/SN

Overview

The Microchip Technology 11AA02E64-I/SN is a 2 Kbit Serial Electrically Erasable PROM organized as 256 x 8-bit memory. It operates within a supply voltage range of 1.8V to 5.5V and supports an industrial temperature range from -40°C to +85°C. The device utilizes the UNI/O single I/O serial interface with a maximum bit rate of 100 kbps. It features a preprogrammed globally unique 64-bit node address compatible with EUI-64 standards, housed in an 8-lead SOIC package.

Feature Summary

• Preprogrammed globally unique 64-bit node address for device identification
• Single I/O UNI/O serial interface bus using Manchester encoding
• Built-in write protection including power-on/off data protection circuitry
• High reliability with over one million erase/write cycles and extended data retention

Applications

• Microcontroller system configuration storage
• Device identity and authentication modules
• Low-pin-count embedded sensor interfaces

Procurement Notes

Verify that the specific suffix 'I/SN' corresponds to the Industrial temperature grade (-40°C to +85°C) and the 8-lead SOIC package type. Confirm the presence of the preprogrammed 64-bit EUI-64 address during incoming inspection if required by the design specification. Ensure compatibility with the master controller's UNI/O protocol implementation.

Selection Notes

Select this component when a unique hardware identifier is required without external components. The UNI/O interface minimizes pin count compared to standard SPI or I2C alternatives. Verify that the host microcontroller can generate the specific Manchester-encoded timing requirements for the SCIO line. Consider the page-write buffer size relative to the application's write throughput needs.

Part Context

This part belongs to the 11AA02EXX family of 2 Kbit serial EEPROMs. It shares the same physical package and electrical characteristics as the 11AA02E48 variant, differing primarily in the length of the factory-programmed node address (64-bit versus 48-bit). Both devices utilize the same low-power CMOS technology and interface protocols.

Replacement Considerations

The 11AA02E48 is a functional substitute within the same package and interface family, provided the application does not strictly require a 64-bit address space.