11AA080T-I/MS

Overview

The Microchip Technology 11AA080T-I/MS is an 8 Kbit serial electrically erasable programmable read-only memory (EEPROM) utilizing the UNI/O single-wire interface. It features a 1,024 x 8 organization with a 16-byte page write buffer. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports a maximum bus frequency of 100 kHz. Designed for industrial applications, it functions reliably between -40°C and +85°C.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for combined clock and data transmission.
• Includes built-in write protection mechanisms such as power-on/off data protection circuitry and a configurable write enable latch.
• Features block write protection allowing selective protection of none, one-quarter, one-half, or the entire memory array.
• Incorporates Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Applications

• Interfacing with microcontrollers requiring a discrete I/O line configured for the UNI/O protocol
• ASIC communication systems utilizing single-wire serial data exchange
• Industrial embedded systems operating within the specified temperature range

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the device address configuration aligns with system bus requirements. Ensure compatibility with the master controller's ability to generate the necessary start headers and standby pulses for proper UNI/O protocol synchronization.

Selection Notes

Select this component when a single-wire interface is preferred over multi-wire protocols like SPI or I2C to minimize pin count. Consider the 1.8 V minimum operating voltage for low-power designs. Evaluate the 16-byte page buffer size against application write throughput needs. Verify that the host controller can implement the Manchester encoding timing requirements.

Part Context

This part belongs to the 11AAXXX family of 1 Kbit through 16 Kbit serial EEPROMs from Microchip Technology. The family shares common architectural features including the UNI/O interface and similar command sets. Variations within the family differ primarily in storage density, voltage ranges, and available package options.

Replacement Considerations

Consult the manufacturer's selection guide for compatible alternatives within the 11AA series. Verify that any substitute maintains the same UNI/O protocol support and voltage specifications. Cross-reference package dimensions if physical footprint constraints exist.