11LC080-I/MS

Overview

The Microchip Technology 11LC080-I/MS is an 8 Kbit serial electrically erasable programmable read-only memory (EEPROM) utilizing the UNI/O single I/O bus interface. It features a 1,024 x 8 bit organization and operates within a supply voltage range of 2.5 V to 5.5 V. The device supports a maximum serial bus frequency of 100 kHz and includes a 16-byte page-write buffer. 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 on the SCIO pin.
• Includes built-in write protection mechanisms such as power-on/off data protection circuitry and a software-controlled write enable latch.
• Features block write protection allowing configuration to protect 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 effects.

Applications

• Microcontroller-based systems requiring non-volatile data storage with minimal pin usage
• Industrial control devices needing reliable parameter retention in harsh environments
• Low-pin-count embedded sensors storing calibration data

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the device address code aligns with system bus requirements. Ensure compatibility with the master controller's UNI/O protocol implementation before finalizing procurement.

Selection Notes

Select this component when a single-wire interface is necessary to conserve microcontroller pins. Choose this part over standard SPI EEPROMs if board space is limited and only one I/O line is available for memory communication. Verify that the 2.5 V minimum supply voltage meets the system's operational requirements.

Part Context

This device belongs to the 11XX family of serial EEPROMs from Microchip Technology. The family offers densities ranging from 1 Kbit to 16 Kbit. The 'I' suffix indicates an industrial temperature rating, while the 'MS' suffix denotes the 8-lead MSOP package format used for surface-mount applications.

Replacement Considerations

Check for other members of the 11LC series with different densities or the 11AA series which supports lower voltages. Ensure any substitute maintains the UNI/O interface and MSOP package constraints.