11LC160T-I/SN

Overview

The Microchip Technology 11LC160T-I/SN is a 16 Kbit (2,048 x 8) serial electrically erasable PROM utilizing the UNI/O single I/O bus interface. It operates within a voltage range of 2.5 V to 5.5 V and supports a maximum clock frequency of 100 kHz. The device features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce. It includes a STATUS register for write protection and in-progress monitoring, with block write protection capabilities. The component is housed in an 8-lead MSOP package and is rated for industrial temperature operation from -40°C to +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 via power-on/off data protection circuitry and a configurable write enable latch.
• Features a 16-byte page-write buffer for efficient data storage operations.
• Provides high reliability with over one million erase/write cycles and greater than 200 years of data retention.

Applications

• Microcontroller system configuration storage
• Calibration data and parameter logging
• Device identification and security key storage

Procurement Notes

Verify that the ordering suffix corresponds to the MSOP-8 package and Industrial temperature grade (-40°C to +85°C). Confirm the specific density variant matches the required memory organization. Ensure compatibility with the master controller's UNI/O protocol implementation. Check for RoHS compliance status if required by assembly specifications.

Selection Notes

Select this part when a single-pin serial interface is required to minimize PCB trace count. Choose this model for applications needing robust write protection and high endurance. Verify that the operating voltage range aligns with the system supply rails. Consider the MSOP package size constraints during layout planning.

Part Context

This component belongs to the 11LC160 family of serial EEPROMs manufactured by Microchip Technology. The family shares common architectural features including the UNI/O interface and similar command sets across various densities. The 'I' designation indicates the industrial temperature range, while 'SN' specifies the MSOP package type.

Replacement Considerations

Compatible substitutes include other members of the 11LC160 family such as 11LC160T-I/MS or 11LC160T-I/MNY, provided the package footprint and pinout are compatible with the existing design.

FAQ

How does the UNI/O interface manage clock and data signals?

The UNI/O interface combines the clock and data into a single serial bit stream (SCIO) using Manchester encoding techniques, allowing the receiver to extract timing and decode values from the same line.

What happens if a page write crosses a physical page boundary?

If a page write operation attempts to cross a physical page boundary, the address counter rolls over to the beginning of the current page, causing the new data to overwrite previously stored data instead of writing to the next page.