Microchip Technology 11LC010T-I/SN

Overview

11LC010T-I/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, featuring 16-byte page write buffer, 1 µA max standby current (I-temp), and industrial temperature range (–40°C to +85°C). It is used for nonvolatile parameter storage in space-constrained embedded systems such as sensor calibration modules and power supply configuration registers.

For engineers reviewing the 11LC010T-I/SN datasheet, 11LC010T-I/SN pinout, 11LC010T-I/SN application, or 11LC010T-I/SN equivalent, key selection considerations include its 3-lead SOT-23 package, Manchester-encoded UNI/O® timing compliance (100 kHz max bit rate), block write protection (0%, 25%, 50%, or 100% array), and guaranteed 1,000,000 erase/write cycles with >200 years data retention.

Technical Context

The 11LC010T-I/SN implements a Manchester-encoded, single-wire UNI/O® bus protocol where clock and data share the SCIO pin. Its internal architecture includes a status register with WIP and WEL bits, page latches for 16-byte buffered writes, and slope-controlled output drivers to suppress ground bounce.

It supports dynamic re-synchronization during communication via MAK-bit edge tracking, tolerating ±0.50% frequency drift per byte and ±5% total drift per command, while rejecting input noise via Schmitt-trigger inputs with 0.05×VCC hysteresis and 50 ns spike suppression on SCIO.

Key Specifications

Pinout & Package

11LC010T-I/SN is housed in a 3-lead SOT-23 package (SN suffix), with leads arranged as SCIO (pin 1), VCC (pin 2), and VSS (pin 3) in top-down view. 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 11AA010T-I/SN, the 11LC010T-I/SN trades 1.8V operation for higher VCC noise margin and simplified power domain design; compared with 24LC01B-I/SN, it reduces pin count and eliminates clock stretching dependencies but requires UNI/O®-capable firmware.

Availability

11LC010T-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply configuration, and medical device settings requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 11LC010T-I/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 for embedded control applications.

The 11LC010T-I/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for space- and pin-constrained systems needing robust, low-power nonvolatile storage with minimal MCU resource overhead.

FAQ

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

The 11LC010T-I/SN uses Microchip's patented UNI/O® single-wire serial bus, which combines clock and data onto the SCIO pin using Manchester encoding. This eliminates the need for separate clock and data lines, reducing MCU pin count and PCB routing complexity. The 11LC010T-I/SN operates as a slave device synchronized to the master's bus frequency, supporting up to 100 kHz bit rate with built-in jitter tolerance and re-synchronization logic.

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

Yes, the 11LC010T-I/SN supports hardware-based block write protection via two nonvolatile BP0/BP1 bits in its STATUS register. These bits can be programmed using the WRSR instruction to lock 0%, 25%, 50%, or 100% of the memory array against accidental writes. Protection is enforced independently of the write-enable latch and remains active across power cycles, providing deterministic safeguarding of critical calibration or configuration data stored in the 11LC010T-I/SN.

What is the maximum write cycle time for the 11LC010T-I/SN?

The 11LC010T-I/SN specifies a maximum write cycle time of 10 ms for page or byte writes under worst-case conditions (VCC = 2.5V). This value includes internal auto-erase and programming phases. During this time, the Write-In-Progress (WIP) bit in the STATUS register remains set, allowing the host MCU to poll completion status without fixed delays. The 11LC010T-I/SN guarantees this timing across its full industrial temperature range (–40°C to +85°C).

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

Yes, the 11LC010T-I/SN is fully specified to operate from 2.5V to 5.5V, making it compatible with standard 3.3V logic systems. At VCC = 3.3V, it delivers typical active current of 1 mA and maximum standby current of 1 µA (I-temp), with guaranteed AC timing margins including 100 kHz bus frequency, 100 ns input rise/fall times, and 50 ns input spike suppression. No level-shifting circuitry is required when interfacing with 3.3V microcontrollers.

How does the 11LC010T-I/SN handle power loss during a write operation?

The 11LC010T-I/SN incorporates built-in power-loss protection: its write cycle is self-timed and atomic-only completing if sufficient charge is available to finish programming and verify. If VCC drops below the minimum operating threshold during a write, the internal state machine aborts the operation and leaves memory unchanged. Additionally, the write-enable latch resets on power-up, preventing unintended writes after brown-out recovery. These features ensure data integrity for the 11LC010T-I/SN even in unstable power environments.