11LC161T-I/MNY

Overview

The Microchip Technology 11LC161T-I/MNY is a 16 Kbit serial electrically erasable programmable read-only memory (EEPROM) organized as 2048 x 8 bits. It utilizes the UNI/O single I/O serial interface bus, operating with a maximum clock frequency of 100 kHz. The device supports a supply voltage range from 2.5 V to 5.5 V and is housed in an 8-lead TDFN package. Designed for industrial applications, it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Supports the patented UNI/O single I/O serial protocol using Manchester encoding on the SCIO pin.
• Includes built-in write protection mechanisms such as power-on/off data protection and a write enable latch.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides block write protection allowing configuration to protect none, one-quarter, one-half, or all of the array.

Applications

• Interfacing with microcontrollers requiring low-pin-count non-volatile storage
• ASIC designs needing compact serial EEPROM solutions
• Industrial systems utilizing discrete I/O lines for memory access

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the device address code corresponds to the '1' variant for proper bus addressing. Ensure the design accounts for the single I/O interface requirements rather than standard multi-wire protocols.

Selection Notes

Select this component when a single-pin serial interface is preferred over traditional two-wire or four-wire buses. It is suitable for applications requiring moderate density with robust write protection features. Consider the TDFN package constraints for PCB layout and thermal management during selection.

Part Context

This part belongs to the 11LC161 family of serial EEPROMs from Microchip Technology. The family offers various densities and organizations, supporting both UNI/O and other interface types depending on the specific model. The 11LC series is distinguished by its 2.5V minimum operating voltage compared to the 1.8V capable 11AA series.

Replacement Considerations

Check for alternative packages within the same family, such as MSOP or SOIC variants, if lead-free compliance or specific footprint dimensions differ. Verify compatibility with existing firmware drivers designed for the UNI/O protocol before substituting.