Microchip Technology 11LC010T-E/SN

Overview

11LC010T-E/SN from Microchip Technology Inc. is a 1 Kbit (128 × 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 temperature range. It features 16-byte page-write buffer, Schmitt-trigger SCIO input, output slope control, and built-in write protection for use in automotive body control modules requiring reliable nonvolatile storage.

For engineers reviewing the 11LC010T-E/SN datasheet, 11LC010T-E/SN pinout, 11LC010T-E/SN application, or 11LC010T-E/SN equivalent, key selection criteria include its automotive-grade temperature rating, UNI/O® bus compatibility with minimal GPIO usage, 1 µA max standby current, 100 kbps bit rate, and block write protection configuration via STATUS register.

Technical Context

The 11LC010T-E/SN implements Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating need for separate clock and data lines. Its internal timing recovery circuitry tolerates ±0.50% frequency drift per byte and ±0.06 UI edge jitter, enabling robust communication in electrically noisy automotive environments.

It integrates a current-limited slope-controlled SCIO driver, Schmitt-trigger input for noise immunity, and an 8-bit instruction register supporting READ, WRITE, RDSR, WRSR, ERAL, and SETAL commands. The device uses on-chip high-voltage generation for EEPROM programming and includes dynamic WIP/WEL status bits accessible during active write cycles.

Key Specifications

Pinout & Package

11LC010T-E/SN is packaged in 3-lead SOT-23 (SN) with top-side marking "11LC010T-E/SN". Pin 1 = SCIO (Serial Clock/Data I/O), Pin 2 = VSS (Ground), Pin 3 = VCC (Supply Voltage). No NC pins present in this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 11AA010T-I/SN, the 11LC010T-E/SN provides automotive temperature qualification and higher minimum VCC, making it suitable for engine bay or headlamp control units; compared with AT24C01D-SSH-T, it reduces pin count and improves noise immunity but requires UNI/O®-capable firmware stack support.

Availability

11LC010T-E/SN is available at Aetrix Electronics and suitable for automotive body electronics, engine management systems, and ADAS sensor calibration requiring stable component supply with guaranteed automotive-grade qualification and long-term lifecycle support.

Supply support for 11LC010T-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 products, with broad automotive AEC-Q100 qualification coverage.

The 11LC010T-E/SN belongs to Microchip's 11XX UNI/O® serial EEPROM family, designed specifically for space-constrained, noise-prone automotive subsystems needing minimal GPIO footprint and robust single-wire communication.

FAQ

What is the UNI/O® interface used by the 11LC010T-E/SN?

The 11LC010T-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 lines, reduces MCU pin count, and simplifies PCB layout. The 11LC010T-E/SN supports up to 100 kbps, with built-in timing recovery tolerant of ±0.50% frequency drift per byte and ±0.06 UI edge jitter - essential for reliable operation in electrically noisy automotive environments.

Does the 11LC010T-E/SN support hardware write protection?

Yes, the 11LC010T-E/SN supports configurable hardware write protection via BP0 and BP1 bits in its STATUS register. These nonvolatile bits allow locking 0%, 25%, 50%, or 100% of the 128 × 8 memory array against accidental writes. Protection is enforced at the silicon level and remains active even after power cycles. The 11LC010T-E/SN also includes power-on/off data protection circuitry and a write-enable latch (WEL) that must be set via WREN command before any write operation can proceed.

What is the maximum write endurance and data retention of the 11LC010T-E/SN?

The 11LC010T-E/SN guarantees 1,000,000 erase/write cycles per memory location and data retention exceeding 200 years at +85°C ambient. These specifications are validated per JEDEC standards and apply across its full automotive temperature range (-40°C to +125°C). Endurance is measured at 25°C and 5.5V, with derating applied per Microchip's Total Endurance™ Model for application-specific lifetime estimation - critical for long-life automotive deployments where field updates occur infrequently but must remain reliable over 15+ years.

Can the 11LC010T-E/SN operate from a 3.3V supply?

Yes, the 11LC010T-E/SN operates from 2.5V to 5.5V, fully supporting standard 3.3V logic systems. At VCC = 3.3V, it delivers typical active current of 1 mA and maximum standby current of 1 µA (at +85°C), meeting stringent low-power requirements for always-on automotive modules. DC characteristics including VIH (≥2.31V), VOL (≤0.4V), and output drive capability (±3 mA at 2.5V) are specified and tested across this range - ensuring interoperability with 3.3V MCUs without level-shifting.

What package type does the 11LC010T-E/SN use, and what are its key mechanical features?

The 11LC010T-E/SN uses the 3-lead SOT-23 (SN) package - a surface-mount, RoHS-compliant plastic case measuring 2.9 mm × 1.6 mm × 1.1 mm. It features gull-wing leads with 0.95 mm pitch, optimized for automated reflow assembly. Pin 1 (SCIO) is marked by a dot; pin order is SCIO-VSS-VCC (top view). This compact package enables placement in space-constrained locations such as behind instrument clusters or inside lamp housings - where the 11LC010T-E/SN's automotive temperature rating and low-profile form factor deliver distinct design advantages.