11AA02E48T-I/SN

Overview

The Microchip Technology 11AA02E48T-I/SN is a 2 Kbit serial EEPROM utilizing the UNI/O single I/O bus interface. It features a 256 x 8-bit memory organization and operates within a voltage range of 1.8V to 5.5V. The device supports a maximum bit rate of 100 kbps and includes a 16-byte page-write buffer. It is housed in an 8-lead SOIC package and offers industrial temperature operation from -40°C to +85°C.

Feature Summary

• Preprogrammed with a globally unique, 48-bit EUI-48 node address for device identification.
• Utilizes a single I/O UNI/O serial interface combining clock and data into one stream.
• Includes block write protection allowing configuration to protect none, 1/4, 1/2, or all of the array.
• Features built-in power-on/off data protection and a write enable latch mechanism.

Applications

• Microcontroller systems requiring unique hardware identification
• Low-pin-count embedded devices needing simple serial communication
• Industrial control applications requiring robust noise immunity

Procurement Notes

Verify that the specific suffix 'SN' corresponds to the 8-lead SOIC package variant rather than the SOT-23 option. Confirm the 'I' designation matches the required industrial temperature range specifications for your deployment environment. Ensure the ordering code explicitly includes the tape-and-reel 'T' indicator if automated surface-mount assembly is planned.

Selection Notes

Select this component when a single-wire serial interface is preferred over multi-wire protocols to minimize PCB trace count. Choose this part for applications requiring factory-programmed unique identifiers without additional configuration steps. Consider this device for designs where low standby current consumption and high reliability are critical operational constraints.

Part Context

This device belongs to the 11AA02EXX family of 2 Kbit UNI/O serial EEPROMs. It shares functional similarities with the 11AA02E64 model, which provides a 64-bit EUI-64 address instead of the 48-bit EUI-48 address found in this specific part number. Both variants utilize identical electrical characteristics and command sets.

Replacement Considerations

The 11AA02E64T-I/SN serves as a direct functional substitute, differing only in the length of the preprogrammed node address (64-bit versus 48-bit). Other members of the 11AA02EXX family may be compatible provided the specific address requirement aligns with the application design.