11AA160-I/TO

Overview

The Microchip Technology 11AA160-I/TO is a 16 Kbit serial EEPROM featuring a UNI/O single-wire interface. It offers a 2048 x 8 bit organization with a 16-byte page write buffer. Operating within a 1.8V to 5.5V supply range, it supports up to 100 kbps data rates. The device provides high reliability with over one million erase/write cycles and greater than 200 years of data retention. It includes built-in write protection and block protection features.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding for combined clock and data transmission on the SCIO pin.
• Features a 16-byte page-write buffer and self-timed write cycles with automatic erase capabilities.
• Includes comprehensive write protection mechanisms such as a write enable latch, power-on/off data protection, and configurable block write protection.
• Utilizes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Applications

• Interfacing with microcontrollers via discrete I/O lines configured for the UNI/O protocol
• Data storage in low-power embedded systems requiring single-wire communication
• Applications needing non-volatile memory with hardware-based write protection

Procurement Notes

Verify that the specific ordering suffix corresponds to the TO-92 package type. Confirm the industrial temperature grade (-40°C to +85°C) matches your operational requirements. Ensure the 1.8V minimum voltage rating aligns with your system's supply rails. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a single-wire interface is necessary to minimize pin count. Choose the 11AA160 variant for 16 Kbit capacity needs. Consider the TO-92 package only if through-hole mounting is specified. Verify that the master controller can generate the required Manchester encoded signals and standby pulses for proper bus synchronization.

Part Context

This part belongs to the 11XX family of serial EEPROMs from Microchip Technology. The family includes various densities ranging from 1 Kbit to 16 Kbit. The 'AA' designation indicates support for low-voltage operation down to 1.8V, distinguishing it from the 'LC' series which requires a minimum of 2.5V.

Replacement Considerations

Compatible substitutes include other members of the 11AA160 family with different packages, such as 11AA160-I/P or 11AA160-I/SN. Devices like the 11AA161 share similar electrical characteristics but utilize a different device address (0xA1 instead of 0xA0).