11AA080-I/P

Overview

The Microchip Technology 11AA080-I/P is an 8 Kbit (1K x 8) serial EEPROM utilizing the UNI/O single I/O bus interface. It operates within a supply voltage range of 1.8V to 5.5V and supports a maximum bit rate of 100 kbps. The device features a 16-byte page-write buffer, Schmitt trigger inputs for noise suppression, and output slope control to eliminate ground bounce. It provides high reliability with 1,000,000 erase/write cycle endurance and data retention exceeding 200 years. The component is housed in an 8-lead PDIP package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Supports the patented UNI/O serial protocol using Manchester encoding over a single bidirectional I/O line.
• Includes built-in write protection mechanisms such as power-on/off data protection and a configurable write enable latch.
• Features block write protection allowing selective protection of none, one-quarter, one-half, or the entire memory array.
• Integrates a status register for monitoring write-in-progress states and managing write enable latches.

Applications

• Interfacing with microcontrollers requiring low pin-count non-volatile storage
• ASIC applications needing simple serial configuration data retention
• Systems utilizing discrete I/O lines configured for UNI/O protocol communication

Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm that the application design accommodates the UNI/O single-wire interface timing requirements. Ensure the supply voltage remains within the specified operational range for the selected temperature conditions. Check for any recent product change notifications regarding packaging or material compliance updates.

Selection Notes

Select this component when a single-wire serial interface is preferred to minimize pin usage on the host controller. Choose this part for designs requiring robust noise immunity through Schmitt trigger inputs. Consider this device for applications demanding high endurance and long-term data retention without complex multi-wire bus protocols. Verify compatibility with the master device's ability to generate the required Manchester encoded signals.

Part Context

This device belongs to the 11XX family of serial EEPROMs, which includes variants with densities ranging from 1 Kbit to 16 Kbit. The family shares common architectural features such as the UNI/O interface and similar command sets. Other members include the 11LC series, which operates at a minimum voltage of 2.5V, and different density options like the 11AA010 or 11AA160.

Replacement Considerations

The 11LC080-I/P serves as a functional substitute within the same family, though it requires a minimum supply voltage of 2.5V compared to the 1.8V minimum of the 11AA080. Both devices share identical pinouts, memory organization, and interface protocols.