Microchip Technology 11LC080-E/SN

Overview

11LC080-E/SN from Microchip Technology Inc. is an 8 Kbit (1,024 × 8) serial EEPROM with UNI/O® single-I/O bus interface, operating from 2.5V to 5.5V across -40°C to +125°C (Automotive grade). It features 16-byte page write buffer, Schmitt-trigger SCIO input, output slope control, and 100 kbps max bit rate. Used for nonvolatile parameter storage in automotive body controllers and engine management modules.

For engineers reviewing the 11LC080-E/SN datasheet, 11LC080-E/SN pinout, 11LC080-E/SN application, or 11LC080-E/SN equivalent, key selection criteria include UNI/O® bus compatibility, automotive temperature range support, 16-byte page write capability, standby current ≤1 µA at 125°C, and SOT-23-3 package footprint constraints.

Technical Context

The 11LC080-E/SN implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock or chip-select signals. Its internal timing recovery circuitry tolerates ±0.5% frequency drift per byte and ±0.06 UI edge jitter, enabling robust operation in electrically noisy automotive environments.

It integrates a write-enable latch, STATUS register (WIP/WEL/BP bits), and hardware block protection (none/¼/½/all array). Write cycles are self-timed (max 10 ms), with built-in power-on/off data protection and 1,000,000 endurance cycles per page.

Key Specifications

Pinout & Package

11LC080-E/SN is packaged in 3-lead SOT-23 (SN suffix), with SCIO as bidirectional serial I/O, VSS as ground, and VCC as supply voltage. No NC pins in this variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with 11LC080-E/SN, the 11AA080-I/SN offers lower-voltage operation but lacks automotive qualification, while the AT24C08D-SSHM-T provides identical density and temperature range but demands additional I/O resources and protocol redesign - making 11LC080-E/SN optimal for new automotive designs prioritizing pin efficiency and E-grade compliance.

Availability

11LC080-E/SN is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS sensor calibration requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 11LC080-E/SN includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions for industrial, automotive, and consumer markets.

The 11LC080-E/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for space- and pin-constrained embedded systems requiring robust, low-power nonvolatile storage in harsh environments.

FAQ

What is the UNI/O® interface used by the 11LC080-E/SN?

The 11LC080-E/SN uses Microchip's patented UNI/O® bus, a single-wire, Manchester-encoded serial interface that combines clock and data on the SCIO pin. This eliminates separate clock, data, and chip-select lines - reducing MCU pin count and PCB routing complexity. The 11LC080-E/SN fully complies with UNI/O® Specification Rev D, supporting up to 100 kbps and automatic timing recovery.

Does the 11LC080-E/SN support write protection at the hardware level?

Yes, the 11LC080-E/SN includes hardware-based block write protection controlled by BP0 and BP1 bits in its STATUS register. These nonvolatile bits allow locking 0%, 25%, 50%, or 100% of the memory array against accidental writes. Protection is enforced independently of software control and remains active after power cycles - a critical feature for safeguarding calibration data in automotive applications using the 11LC080-E/SN.

What is the maximum write cycle time for the 11LC080-E/SN?

The 11LC080-E/SN has a maximum write cycle time of 10 ms for both byte and page writes, as specified in DS22067J-page 4 (Parameter D13). This applies to all write operations including WRITE, WRSR, ERAL, and SETAL commands. The device uses self-timed internal programming, so no external delay is needed - the WIP bit in the STATUS register must be polled to confirm completion before issuing subsequent commands.

Can the 11LC080-E/SN operate reliably in high-EMI automotive environments?

Yes, the 11LC080-E/SN is engineered for automotive EMI resilience: its Schmitt-trigger SCIO input provides ≥0.05×VCC hysteresis to reject noise, output slope control limits edge rates to prevent ground bounce, and the UNI/O® Manchester encoding inherently rejects common-mode interference. Combined with AEC-Q100 stress testing and -40°C to +125°C qualification, the 11LC080-E/SN maintains reliable communication in engine bay and chassis-mounted modules.

Is the 11LC080-E/SN pin-compatible with other devices in the 11XX family?

The 11LC080-E/SN in SOT-23-3 (SN) package shares identical pinout (SCIO/VSS/VCC) with all 11XX family members offered in that package - including 11LC010-E/SN, 11LC020-E/SN, and 11LC040-E/SN. However, density, VCC range, and temperature grade differ; firmware must be validated for the specific part's memory map and electrical specs. Pin compatibility does not imply functional drop-in replacement without software review.