11LC161T-E/MS

Overview

The Microchip Technology 11LC161T-E/MS is a 16 Kbit serial electrically erasable programmable read-only memory (EEPROM) utilizing the UNI/O single-wire interface. It features a 2,048 x 8 organization and operates within a supply voltage range of 2.5 V to 5.5 V. The device supports a maximum clock frequency of 100 kHz and includes a 16-byte page-write buffer. It is housed in an 8-lead MSOP package and rated for automotive temperature ranges from -40°C to +125°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 circuitry and a write enable latch.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides high reliability with one million erase/write cycles endurance and over 200 years of data retention.

Applications

• Interfacing with microcontrollers requiring low-pin-count non-volatile storage
• ASIC applications needing simple serial configuration memory
• Automotive electronic systems operating in extended temperature environments

Procurement Notes

Verify that the specific ordering suffix corresponds to the required temperature grade and packaging format. Confirm the device address code matches system requirements, as the '1' suffix indicates a distinct hardware address compared to other family members. Ensure compatibility with the master controller's UNI/O protocol implementation before finalizing procurement.

Selection Notes

Select this component when a single-wire interface is necessary to minimize pin count on the host system. The automotive temperature rating makes it suitable for harsh environments where industrial grades are insufficient. Consider the 16-byte page buffer size for write efficiency and verify that the 2.5 V minimum supply voltage aligns with the target system's power rails.

Part Context

This part belongs to the 11LCXXX family of 1 Kbit to 16 Kbit serial EEPROMs. It shares architectural similarities with the 11AA series but differs in minimum operating voltage and availability. The family utilizes a common instruction set and communication protocol, allowing for potential design flexibility within the same product line while maintaining specific electrical characteristics for each variant.

Replacement Considerations

The 11LC161-I/MS serves as the industrial temperature equivalent. Other density variants within the 11LC160 or 11LC080 families may be compatible if memory size differences are acceptable. Verify that substitute parts maintain the same 8-lead MSOP package and UNI/O interface compatibility.