Microchip Technology 11LC010T-E/TT

Overview

11LC010T-E/TT from Microchip Technology Inc. is a 1 Kbit (128 × 8) serial EEPROM using the UNI/O® single I/O bus interface, operating from 2.5V to 5.5V across -40°C to +125°C, with 16-byte page write buffer, Schmitt-trigger SCIO input, and built-in write protection for automotive-grade embedded systems requiring nonvolatile parameter storage.

For engineers reviewing the 11LC010T-E/TT datasheet, 11LC010T-E/TT pinout, 11LC010T-E/TT application, or 11LC010T-E/TT equivalent, key selection criteria include its UNI/O® bus compatibility, automotive temperature rating, 100 kbps bit rate, 1 µA max standby current, and 3-lead SOT-23 (TT) package - all critical for space-constrained, low-power, high-reliability designs in vehicle subsystems.

Technical Context

The 11LC010T-E/TT implements Manchester-encoded serial communication over a single SCIO line, extracting clock and data from one bidirectional signal. Its internal architecture includes a status register with WIP and WEL bits, 16-byte page latches, and re-synchronization circuitry tolerant to ±0.50% frequency drift per byte and ±0.06 UI input edge jitter.

It supports block write protection (none, 1/4, 1/2, or full array), self-timed write cycles up to 10 ms, and automatic erase-before-write. The device enters Standby mode after NoMAK/SAK termination or a TSTBY ≥600 µs high pulse on SCIO, drawing ≤1 µA at 125°C.

Key Specifications

Pinout & Package

11LC010T-E/TT is packaged in a 3-lead SOT-23 (TT) surface-mount package with top-side marking "11LC010T-E/TT". 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 11LC010T-E/TT, the 11AA010T-I/TT trades automotive qualification for wider low-voltage operation, while the AT24C01D-SSHM-T sacrifices single-wire simplicity and noise resilience for broader ecosystem support - making 11LC010T-E/TT optimal where pin count, EMI robustness, and AEC-Q100 compliance are primary constraints.

Availability

11LC010T-E/TT is available at Aetrix Electronics and suitable for automotive control units, body electronics, and ADAS subsystems requiring stable component supply with guaranteed long-term availability and AEC-Q100-compliant traceability.

Supply support for 11LC010T-E/TT 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 manufacturer specializing in microcontrollers, analog devices, and memory products, with global manufacturing and quality certifications including AEC-Q200 for passive components.

The 11LC010T-E/TT belongs to Microchip's UNI/O® Serial EEPROM family, designed specifically for automotive and industrial applications demanding ultra-low pin count, high noise immunity, and extended temperature reliability in resource-constrained embedded systems.

FAQ

What is the UNI/O® interface used by the 11LC010T-E/TT, and how does it differ from I²C or SPI?

The 11LC010T-E/TT uses Microchip's patented UNI/O® interface - a single-wire, Manchester-encoded serial bus that combines clock and data on the SCIO pin. Unlike I²C (2-wire) or SPI (3–4 wires), UNI/O® eliminates dedicated clock lines and reduces MCU pin usage. It provides inherent noise immunity through encoding and requires no external pull-ups, distinguishing it from standard I²C implementations. The 11LC010T-E/TT fully complies with UNI/O® protocol timing, including start headers, MAK/NoMAK handshaking, and re-synchronization.

Does the 11LC010T-E/TT support write protection, and how is it configured?

Yes, the 11LC010T-E/TT supports hardware-configurable block write protection via BP0 and BP1 bits in its STATUS register. These bits - set using the WRSR command - enable protection of none, 1/4, 1/2, or the entire 128-byte array. Protection is nonvolatile and persists across power cycles. Additionally, built-in power-on/off write protection and a write-enable latch (WEL) prevent unintended writes during supply transitions. This dual-layer scheme ensures robust data integrity for critical automotive parameters stored in the 11LC010T-E/TT.

What is the maximum write speed and page size of the 11LC010T-E/TT?

The 11LC010T-E/TT supports a maximum bit rate of 100 kbps, translating to ~100 µs per bit and enabling full 16-byte page writes in under 13 ms (including overhead). Its page size is fixed at 16 bytes, aligned to physical boundaries (e.g., addresses 0x00–0x0F). Writes crossing page boundaries wrap within the current page - so firmware must validate address ranges before issuing WRITE commands. The 11LC010T-E/TT's self-timed write cycle completes in ≤10 ms per byte or page, with no external timing dependencies.

Is the 11LC010T-E/TT qualified for automotive applications, and what standards does it meet?

Yes, the 11LC010T-E/TT carries the "E" suffix denoting Automotive qualification, rated for -40°C to +125°C operation and compliant with AEC-Q100 stress testing requirements for integrated circuits. It features enhanced ESD protection (>4 kV HBM), 1,000,000 write cycles, and >200-year data retention - all validated under automotive ambient conditions. Its 3-lead SOT-23 (TT) package is qualified for reflow and thermal cycling per J-STD-020, making the 11LC010T-E/TT suitable for engine control, transmission, and ADAS modules where reliability is mission-critical.

How does the 11LC010T-E/TT handle power loss during a write operation?

The 11LC010T-E/TT incorporates hardware-level power-loss protection: write operations are disabled during brown-out conditions via internal voltage monitoring, and the write-enable latch resets automatically on power-up. If VCC drops below the functional threshold mid-write, the internal charge pump halts, preventing partial writes or corruption. Data remains intact in the pre-write state, and the STATUS register's WIP bit clears only upon successful completion - ensuring the 11LC010T-E/TT never leaves memory in an inconsistent state due to supply interruption.