11LC020T-I/MNY

Overview

The Microchip Technology 11LC020T-I/MNY is a 2 Kbit (256 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 clock frequency 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 MSOP-8 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 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 selection of none, 1/4, 1/2, or all array segments.

Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded devices
• Parameter logging in low-pin-count applications

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'MN' indicates the TDFN-8 package as specified in the datasheet. Confirm that the supply voltage requirements align with the 2.5V to 5.5V operational range. Ensure the design accounts for the specific UNI/O bus timing constraints and acknowledge sequences defined in the electrical characteristics.

Selection Notes

Select this component when a single-wire serial interface is required to minimize pin count. The 11LC020 offers 2 Kbit capacity suitable for moderate data storage needs. Consider the MSOP-8 or TDFN-8 packaging options based on board space constraints. Verify compatibility with the master controller's ability to generate the required Manchester encoded signals and standby pulses.

Part Context

This part belongs to the 11LCXXX family of serial EEPROMs from Microchip Technology. These devices are designed for low-power applications requiring non-volatile memory with simple interface protocols. The family shares common architectural features including the UNI/O bus, page-write buffers, and similar command sets across various densities ranging from 1 Kbit to 16 Kbit.

Replacement Considerations

Direct substitutes within the same density and package include other variants from the 11LC020 series if available. Cross-family replacements like the 11AA020 differ primarily in minimum operating voltage (1.8V vs 2.5V). Verify pinout compatibility and voltage levels before substituting with other serial EEPROM families.