11LC020T-E/TT

Overview

The Microchip Technology 11LC020T-E/TT 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, Schmitt trigger inputs for noise suppression, and output slope control to eliminate ground bounce. It offers high reliability with 1,000,000 erase/write cycles endurance and data retention exceeding 200 years. The component is housed in a 3-lead SOT-23 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 write protection mechanisms such as power-on/off data protection and a write enable latch.
• Features block write protection allowing configuration to protect none, 1/4, 1/2, or all of the memory array.
• Provides low-power operation with typical active current of 1 mA and maximum standby current of 1 µA.

Applications

• Interfacing with microcontrollers requiring minimal I/O pin usage for non-volatile data storage
• Industrial systems operating in harsh environments with high noise levels
• Automotive electronic modules requiring extended temperature range compliance

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm the device address code corresponds to the intended bus configuration. Ensure supply chain sources provide authentic components with valid RoHS compliance documentation. Cross-reference the manufacturer part number against official datasheets to prevent substitution errors.

Selection Notes

Select this component when a single-wire serial interface is necessary to conserve microcontroller pins. Choose this device for applications requiring robust noise immunity through Schmitt trigger inputs. Consider this part for designs needing high endurance and long-term data retention without complex multi-wire protocols.

Part Context

This device belongs to the 11LCXXX family of serial electrically erasable PROMs manufactured by Microchip Technology. The family includes various densities ranging from 1 Kbit to 16 Kbit, all sharing the same UNI/O bus architecture. The 'E' designation indicates automotive-grade qualification, while 'TT' specifies the SOT-23-3 package format.

Replacement Considerations

Compatible substitutes within the same family include the 11LC020T-I/TT for industrial temperature ranges. Other density variants like the 11LC010T-E/TT or 11LC040T-E/TT may be considered if memory capacity requirements differ.