11LC010-E/MS

Overview

The Microchip Technology 11LC010-E/MS is a 1 Kbit (128 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 kHz. The device features a 16-byte page-write buffer, self-timed write cycles, and block write protection capabilities. It is housed in an 8-lead MSOP package and is rated for an extended industrial temperature range 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 power-on/off data protection circuitry and a write enable latch for enhanced reliability.
• Features Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Provides hardware block write protection allowing configuration to protect none, 1/4, 1/2, or all of the memory array.

Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded systems
• Device identification and parameter logging

Procurement Notes

Verify that the specific ordering suffix corresponds to the Automotive grade (-E) with the MSOP-8 package. Confirm the required operating temperature range aligns with the -40°C to +125°C specification. Ensure the design accommodates the 2.5 V minimum supply voltage requirement for this specific part variant.

Selection Notes

Select this component when a single-pin serial interface is required to minimize PCB trace count. Choose the 11LC010-E/MS over the Industrial grade if operation at temperatures up to +125°C is necessary. Consider the 16-byte page buffer size for write efficiency requirements and ensure the host controller supports the UNI/O Manchester encoding protocol.

Part Context

This device 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, differentiated primarily by memory density and operating temperature grades.

Replacement Considerations

The 11AA010 series serves as a low-voltage alternative but lacks the Automotive temperature rating. Cross-referencing with other UNI/O devices requires verifying compatibility with the specific device address codes and command instruction sets defined in the datasheet.

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 the clock signal to correctly decode timing and values.

What mechanism prevents unintended writes to the memory array?

Writes are prevented unless the Write Enable Latch is explicitly set via the WREN instruction. The latch is automatically reset upon power-up, successful execution of WRDI, or completion of any write cycle.