11LC161-E/MS

Memory IC Overview

The Microchip Technology 11LC161-E/MS is a 16 Kbit serial electrically erasable programmable read-only memory (EEPROM) organized as 2,048 x 8 bits. It utilizes the UNI/O single I/O bus interface with a maximum clock frequency of 100 kHz. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports surface mount MSOP-8 packaging. It features an industrial temperature rating from -40°C to +85°C, ensuring reliable data retention exceeding 200 years and endurance of up to 1,000,000 write cycles.

Memory IC 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 hardware protections such as power-on/off data protection circuitry and a write enable latch to prevent accidental writes.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce during signal transitions.
• Provides flexible block write protection allowing users to protect none, one-quarter, one-half, or the entire memory array.

Memory IC Applications

• Microcontroller systems requiring non-volatile storage for configuration parameters
• Industrial control devices needing reliable data logging in harsh environments
• Embedded applications utilizing single-pin communication interfaces

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the extended automotive temperature range (-40°C to +125°C) if required by your design specifications, while the 'MS' indicates the MSOP-8 package. Confirm compliance with RoHS standards and ensure the specific revision level matches your schematic requirements before finalizing procurement orders.

Memory IC Selection Notes

Select this component when a single-wire interface is preferred to minimize pin count compared to standard I2C or SPI memories. Ensure the system voltage remains within the 2.5 V to 5.5 V operating range. Consider the 16-byte page-write buffer capability for efficient data throughput during write operations.

Memory IC Part Context

This part belongs to the 11LC161 series within the broader 11XX family of serial EEPROMs. It shares architectural similarities with the 11LC160 but differs in its hardwired device address code ('0001' vs '0000'), allowing both variants to coexist on the same bus without address conflicts.

Memory IC Replacement Considerations

The 11LC160-E/MS serves as a functional substitute provided the application can accommodate the different device address code. Verify that the replacement part maintains compatibility with the existing software drivers and bus timing constraints.