11LC080-E/P

Overview

The Microchip Technology 11LC080-E/P is an 8-kbit serial electrically erasable programmable read-only memory (EEPROM) utilizing the UNI/O single I/O bus interface. It features a 1,024 x 8 bit organization and operates within a supply voltage range of 2.5 V to 5.5 V. The device supports a maximum serial bus frequency of 100 kHz and includes a 16-byte page-write buffer. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +125°C and is housed in an 8-lead PDIP package.

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, one-quarter, one-half, or the entire memory array.
• Provides high reliability with specified endurance of one million erase/write cycles and data retention exceeding two hundred years.

Applications

• Microcontroller system configuration storage
• Calibration data retention in embedded devices
• Parameter logging in industrial sensors

Procurement Notes

Verify that the specific suffix 'E' confirms the automotive temperature grade (-40°C to +125°C) rather than the standard industrial grade. Confirm the 'P' suffix corresponds to the 8-lead PDIP package type required for your board layout. Ensure the design accounts for the single I/O interface requirements distinct from standard SPI protocols.

Selection Notes

Select this component when a single-pin serial interface is preferred to minimize microcontroller I/O usage. The 11LC080-E/P is suitable for designs requiring robust write protection and high endurance. Consider the 16-byte page buffer for efficient data writing operations. Verify compatibility with the master device's ability to generate the specific UNI/O start headers and acknowledge sequences.

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 11LC040 and 11LC160. The 'E' designation indicates an extended temperature range suitable for automotive environments, distinguishing it from the 'I' variant which covers the standard industrial range.

Replacement Considerations

Direct substitutes include other 11LC080 variants with different temperature grades or packages, such as 11LC080-I/P for industrial use or 11LC080-E/MS for surface mount. Cross-family replacements like the 25LC080 require significant software changes due to the SPI interface difference.