11LC040-E/MS

Overview

The Microchip Technology 11LC040-E/MS is a 4 Kbit (512 x 8) serial EEPROM 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 bit rate of 100 kbps. The device features a 16-byte page-write buffer, self-timed write cycles, and block write protection capabilities. Designed for automotive applications, it functions across an extended temperature range of -40°C to +125°C and is housed in an 8-lead MSOP package.

Feature Summary

• Supports the patented UNI/O single I/O serial bus protocol using Manchester encoding on the SCIO pin.
• Includes built-in power-on/off data protection and a write enable latch to prevent unintended writes.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides hardware-based block write protection allowing configuration to protect none, 1/4, 1/2, or all of the memory array.

Applications

• Automotive electronic systems requiring high reliability and wide temperature operation
• Microcontroller-based designs needing non-volatile storage for calibration data
• Industrial control devices with limited I/O pin availability

Procurement Notes

Verify that the ordering suffix corresponds to the Automotive grade (-E) and MSOP package (-MS). Confirm the specific revision level matches your design requirements. Ensure the supplier provides documentation confirming RoHS compliance and Pb-free status as specified in the datasheet.

Selection Notes

Select this component when a single-wire serial interface is required to minimize PCB trace count. Choose the 11LC040-E/MS over industrial variants if the application demands operation up to 125°C ambient temperature. Consider the 16-byte page buffer size for write efficiency compared to byte-write only devices.

Part Context

This part belongs to the 11LCXXX family of serial EEPROMs from Microchip Technology. It shares the UNI/O interface architecture with other densities in the series, such as the 11LC010 and 11LC160. The 'E' designation indicates automotive qualification, while 'MS' specifies the Mini Small Outline Package.

Replacement Considerations

Direct substitutes within the same family include the 11LC040-I/MS for industrial temperature ranges. For different densities, the 11LC020 or 11LC080 may be considered if memory capacity allows. Verify package compatibility when replacing with other 8-lead MSOP devices.