Microchip Technology 11LC080T-I/MNY

Overview

11LC080T-I/MNY 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 over -40°C to +85°C industrial temperature range. It features 16-byte page-write buffer, Schmitt-trigger SCIO input, output slope control, and 100 kbps max bit rate. Used for parameter storage in space-constrained embedded systems such as sensor calibration modules and firmware configuration registers.

For engineers reviewing the 11LC080T-I/MNY datasheet, 11LC080T-I/MNY pinout, 11LC080T-I/MNY application, or 11LC080T-I/MNY equivalent, key selection considerations include its 3-lead SOT-23 package, UNI/O® protocol timing compliance (±0.5% frequency drift tolerance), write endurance (1M cycles), standby current (≤1 µA), and block write protection granularity (none/¼/½/all array).

Technical Context

The 11LC080T-I/MNY implements Manchester-encoded UNI/O® communication on a single SCIO line, eliminating need for separate clock and data lines. Its internal architecture includes a status register with WIP and WEL bits, 16-byte page latches, and HV generator for EEPROM programming.

It supports master-initiated commands including READ, WRITE, RDSR, WRSR, ERAL, and SETAL, with automatic re-synchronization during each MAK bit to tolerate edge jitter (±0.06 UI) and frequency drift (±0.5% per byte). Standby mode activates after NoMAK/SAK termination or explicit standby pulse (≥600 µs high on SCIO).

Key Specifications

Pinout & Package

11LC080T-I/MNY is packaged in a 3-lead SOT-23 (MNY suffix), with pin 1 = SCIO, pin 2 = VSS, pin 3 = VCC. No NC pins are present in this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 11AA080T-I/MNY, the 11LC080T-I/MNY trades 1.8V operation for improved noise immunity at 2.5V+, while versus 24LC08B-I/P it replaces dual-pin I²C with single-pin UNI/O® and adds page-write efficiency - making it optimal for GPIO-limited, space-constrained industrial designs.

Availability

11LC080T-I/MNY is available at Aetrix Electronics and suitable for smart sensor calibration, industrial PLC configuration, and medical device settings requiring stable component supply across extended product lifecycles.

Supply support for 11LC080T-I/MNY 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 emphasis on embedded control and reliability.

The 11LC080T-I/MNY belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for ultra-low-pin-count, low-power, and space-constrained embedded systems requiring robust nonvolatile storage.

FAQ

What is the UNI/O® interface used by the 11LC080T-I/MNY?

The 11LC080T-I/MNY 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 the need for separate clock lines and reduces GPIO usage. The 11LC080T-I/MNY supports up to 100 kbps bit rate, with built-in re-synchronization to tolerate ±0.5% frequency drift per byte and ±0.06 UI edge jitter - enabling reliable communication even with low-precision MCU timers.

Does the 11LC080T-I/MNY support hardware write protection?

Yes, the 11LC080T-I/MNY includes hardware-based block write protection controlled by BP0 and BP1 bits in its STATUS register. These nonvolatile bits allow users to protect none, 1/4, 1/2, or the entire memory array from accidental writes. Protection is enforced independently of software control and remains active across power cycles. Additionally, built-in power-on/off data protection circuitry prevents writes during unstable supply conditions, ensuring integrity of stored data in the 11LC080T-I/MNY.

What is the maximum write speed and page size of the 11LC080T-I/MNY?

The 11LC080T-I/MNY has a fixed page size of 16 bytes and supports page-write operations - allowing up to 16 sequential bytes to be loaded into its internal buffer and written atomically. The maximum write cycle time is 10 ms for page writes (ERAL/SETAL) and 5 ms for byte or status register writes. This page-write capability significantly improves effective write throughput compared to byte-by-byte programming, especially when updating configuration blocks in the 11LC080T-I/MNY.

Can the 11LC080T-I/MNY operate at 1.8V?

No, the 11LC080T-I/MNY is specified for 2.5V to 5.5V operation only. For 1.8V systems, Microchip offers the pin-compatible 11AA080T-I/MNY, which shares identical density, package, UNI/O® interface, and timing but extends VCC down to 1.8V. Using the 11LC080T-I/MNY below 2.5V may result in unreliable communication, failed writes, or undefined behavior - always verify supply voltage against the 11LC080T-I/MNY's absolute maximum rating of 6.5V and operational range.

How does the 11LC080T-I/MNY handle power-loss during a write operation?

The 11LC080T-I/MNY incorporates built-in power-loss protection: its write cycle is self-timed and only commits data after full internal verification. If VCC drops below the functional threshold during a write, the operation aborts and no partial or corrupted data is written. The STATUS register's WIP bit remains set until completion, allowing host firmware to detect incomplete writes. Combined with the 11LC080T-I/MNY's 1 µA standby current and >200-year data retention, this ensures robustness in intermittently powered applications.