11LC161T-I/MS

Overview

The Microchip Technology 11LC161T-I/MS 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 bit rate of 100 kbps. The device functions within a supply voltage range of 2.5 V to 5.5 V and supports industrial temperature conditions from -40°C to +85°C. Packaged in an 8-lead MSOP format, it features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.

Feature Summary

• Supports the patented UNI/O single I/O serial protocol using Manchester encoding on the SCIO pin
• Includes built-in write protection via power-on/off data protection circuitry and a write enable latch
• Features block write protection allowing configuration to protect none, one-quarter, one-half, or all of the array
• Provides high reliability with endurances of up to one million erase/write cycles and data retention exceeding two hundred years

Applications

• Microcontroller system data storage
• ASIC configuration memory
• Device identification and calibration data logging

Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific device address code corresponds to the intended bus configuration. Ensure compatibility with the host controller's ability to implement the UNI/O protocol timing requirements. Check for RoHS compliance status if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when a single-pin serial interface is required to minimize pin count on the host microcontroller. Choose this part over the 11AA series if the application operates exclusively at voltages of 2.5 V or higher, as the 11LC family does not support 1.8 V operation. Consider the MSOP package for surface-mount applications requiring compact board space.

Part Context

This device belongs to the 11LCXXX family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with other members of the 11XX series but is distinguished by its specific density, voltage range, and device address code. The family supports various packages including PDIP, SOIC, TDFN, and MSOP.

Replacement Considerations

Compatible substitutes include other members of the 11LC161 family with different package options, such as 11LC161-E/MS for extended temperature ranges or 11LC161-P for through-hole mounting.