Microchip Technology 11LC020T-I/MNY

Overview

11LC020T-I/MNY from Microchip Technology is a 2 Kbit (256 x 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 Schmitt-trigger SCIO input for noise immunity in space-constrained industrial control modules.

For engineers reviewing the 11LC020T-I/MNY datasheet, 11LC020T-I/MNY pinout, 11LC020T-I/MNY application, or 11LC020T-I/MNY equivalent, key selection considerations include its 3-lead SOT-23 package, UNI/O® protocol timing compliance (10–100 kHz bus frequency), block write protection (0/1/4/2), and -40°C to +85°C industrial temperature range.

Technical Context

The 11LC020T-I/MNY implements Manchester-encoded UNI/O® communication over a single bidirectional SCIO line, using master-controlled bit timing with slave re-synchronization on each MAK edge. It integrates an 8-bit instruction register, internal address pointer, and STATUS register with WIP/WEL/BP bits.

Its architecture includes a current-limited slope-controlled SCIO driver, HV generator for EEPROM programming, and page latches enabling self-timed 5–10 ms write cycles. Block protection is implemented via nonvolatile BP0/BP1 bits controlling 0%, 25%, 50%, or 100% array lock.

Key Specifications

Pinout & Package

11LC020T-I/MNY uses a 3-lead SOT-23 package (MNY suffix), with SCIO as bidirectional serial data/clock line, VSS as ground reference, and VCC as supply input. 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 11AA020T-I/MNY, the 11LC020T-I/MNY trades 1.8V compatibility for improved VCC regulation stability above 2.5V; versus 24LC02BT-I/SN, it reduces pin count and enhances noise immunity at the cost of protocol-specific firmware implementation.

Availability

11LC020T-I/MNY is available at Aetrix Electronics and suitable for industrial sensor calibration storage, medical device configuration memory, and automotive body control module NVM requiring stable component supply across extended temperature ranges.

Supply support for 11LC020T-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 manufacturer specializing in microcontrollers, analog devices, and memory solutions for industrial, automotive, and consumer applications.

The 11LC020T-I/MNY belongs to Microchip's UNI/O® Serial EEPROM family, designed specifically to reduce pin count and simplify firmware integration in resource-constrained embedded systems using single GPIO communication.

FAQ

What is the UNI/O® interface used by the 11LC020T-I/MNY?

The 11LC020T-I/MNY uses Microchip's patented UNI/O® bus, a single-wire, Manchester-encoded serial interface where clock and data are combined into one signal (SCIO). This eliminates separate clock and data lines, allowing connection to any general-purpose I/O pin on a microcontroller without dedicated hardware peripherals. The 11LC020T-I/MNY supports bus frequencies from 10 kHz to 100 kHz with built-in re-synchronization on each MAK bit.

Does the 11LC020T-I/MNY support write protection, and how is it configured?

Yes, the 11LC020T-I/MNY supports hardware block write protection via two nonvolatile BP0 and BP1 bits in its STATUS register. These bits can be set using the WRSR command to protect 0%, 25%, 50%, or 100% of the memory array. Protection is enforced at the hardware level during WRITE commands, and remains active after power cycles. The 11LC020T-I/MNY also includes built-in power-on/off data protection circuitry that inhibits writes during unstable VCC conditions.

What is the maximum write speed and endurance rating of the 11LC020T-I/MNY?

The 11LC020T-I/MNY has a typical write cycle time of 5 ms for byte writes and up to 10 ms for full-page writes, with guaranteed endurance of 1,000,000 erase/write cycles per memory location. Its 16-byte page buffer allows efficient burst writes within a single physical page boundary (e.g., addresses 0x00–0x0F), and data retention exceeds 200 years at 85°C ambient temperature - verified through accelerated life testing per JEDEC standards.

Can the 11LC020T-I/MNY operate at 1.8V?

No, the 11LC020T-I/MNY is specified for 2.5V to 5.5V operation only. For 1.8V systems, Microchip offers the pin-compatible 11AA020T-I/MNY, which shares identical density (2 Kbit), page size (16 bytes), UNI/O® protocol, and SOT-23 packaging but extends VCC down to 1.8V. The 11LC020T-I/MNY's higher minimum VCC improves noise margin and timing stability in electrically noisy industrial environments where 1.8V operation is not required.

What package type does the 11LC020T-I/MNY use, and what are its key mechanical features?

The 11LC020T-I/MNY uses a 3-lead SOT-23 package (MNY suffix), measuring 2.9 mm × 1.6 mm × 1.1 mm with gull-wing leads. It has no NC pins - all three terminals (SCIO, VSS, VCC) are functional and must be soldered. The package is Pb-free and RoHS compliant, qualified for industrial temperature range (-40°C to +85°C), and optimized for automated pick-and-place assembly and reflow soldering per IPC/JEDEC J-STD-020.