11LC160-I/MS

Overview

The Microchip Technology 11LC160-I/MS is a 16 Kbit serial electrically erasable programmable read-only memory (EEPROM) housed in an 8-lead MSOP package. It features a UNI/O single I/O interface with a maximum bit rate of 100 kbps and operates within a supply voltage range of 2.5 V to 5.5 V. The device supports a 16-byte page-write buffer, offers 1,000,000 erase/write cycle endurance, and retains data for over 200 years. 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 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, 1/4, 1/2, or all of the memory array.

Applications

• Interfacing with microcontrollers requiring low-pin-count non-volatile storage
• ASIC designs needing compact serial EEPROM solutions
• Industrial systems operating within standard temperature ranges

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm that the device address hardwired to '0000' aligns with system bus allocation requirements. Ensure compatibility with the master controller's ability to implement the UNI/O protocol timing and acknowledge sequences correctly before finalizing procurement.

Selection Notes

Select this component when a single-wire interface is preferred to minimize pin count compared to SPI or I2C alternatives. Choose the Industrial temperature grade variant for environments ranging from -40°C to +85°C. Consider the 16-byte page buffer size for write efficiency and verify that the 2.5 V minimum supply voltage meets the system's power rail specifications.

Part Context

This part belongs to the 11LCXXX family of 1 Kbit to 16 Kbit serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features including the UNI/O interface and similar command sets, differing primarily in memory density and device addressing codes. The 11LC160 specifically provides 16 Kbit capacity organized as 2,048 x 8 bits.

Replacement Considerations

The 11LC161T-E/MS serves as a functional substitute within the same family, offering identical memory organization but utilizing a different hardwired device address ('0001') to prevent bus conflicts. Both parts share the UNI/O interface and similar electrical characteristics, though package and temperature variations should be verified.