Microchip Technology 11LC010-I/SN

Overview

11LC010-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 across -40°C to +85°C industrial temperature range. It features 16-byte page-write buffer, Schmitt-trigger SCIO input, output slope control, and built-in write protection for use in space-constrained embedded systems requiring nonvolatile parameter storage.

For engineers reviewing the 11LC010-I/SN datasheet, 11LC010-I/SN pinout, 11LC010-I/SN application, or 11LC010-I/SN equivalent, this device delivers low-power serial memory with Manchester-encoded timing recovery, self-timed write cycles, and block-level write protection - critical for firmware configuration, calibration data retention, and sensor node state storage in cost-sensitive industrial designs.

Technical Context

The 11LC010-I/SN implements a Manchester-encoded UNI/O® protocol over a single bidirectional SCIO line, eliminating separate clock and data lines. Its internal timing recovery circuitry synchronizes to master-generated bit periods (10–100 kHz), tolerating ±0.50% frequency drift per byte and ±0.06 UI edge jitter.

It integrates a status register with Write-In-Progress (WIP) and Write-Enable Latch (WEL) flags, plus BP0/BP1 bits enabling 0%, 25%, 50%, or 100% array write protection. The 16-byte page buffer supports burst writes within a single physical page boundary (0x00–0x0F, 0x10–0x1F, etc.), with automatic wraparound on overflow.

Key Specifications

Pinout & Package

11LC010-I/SN is packaged in an 8-lead SOIC (SN) with 150 mil body width, surface-mount footprint, and industry-standard pinout. Pin 1 is SCIO (Serial Clock/Data I/O), Pin 2 is VSS (Ground), Pin 3 is VCC (Supply Voltage), and Pins 4–8 are No Connect (NC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 11AA010-I/SN, the 11LC010-I/SN offers higher minimum supply voltage but identical timing, protection, and endurance - making it preferable in stable 3.3V/5V environments. Versus 24LC01B-I/SN, it trades I²C compatibility for single-pin simplicity and noise-immune Manchester encoding.

Availability

11LC010-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer appliance configuration, medical device parameter storage, and automotive body control module applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 11LC010-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 11LC010-I/SN belongs to Microchip's UNI/O® serial EEPROM family, designed specifically for ultra-low-pin-count systems where minimizing I/O usage and board space is critical - targeting cost-sensitive, space-constrained industrial and consumer electronics.

FAQ

What is the maximum bus frequency supported by the 11LC010-I/SN?

The 11LC010-I/SN supports a maximum serial bus frequency of 100 kHz, corresponding to a minimum bit period of 10 µs. This is specified under AC characteristics Table 1-2, Param. No. 1 (FBUS). Operation above this frequency violates timing specifications and may cause communication failure due to insufficient setup/hold margins on the Manchester-encoded SCIO line.

Does the 11LC010-I/SN require an external pull-up resistor on the SCIO pin?

Yes, the 11LC010-I/SN requires an external pull-up resistor on the SCIO pin to ensure proper high-level signaling and bus idle state. The datasheet specifies typical pull-up values of 4.7 kΩ to 10 kΩ, depending on bus capacitance and desired rise time. Without this resistor, the SCIO line cannot achieve valid VIH levels during master-driven high states.

How does the 11LC010-I/SN handle write protection for its memory array?

The 11LC010-I/SN implements hardware-based block write protection using BP0 and BP1 bits in its STATUS register. These nonvolatile bits, set via the WRSR command, enable protection of 0%, 25%, 50%, or 100% of the 128-byte array. Protection is enforced at the hardware level - attempts to write to protected blocks are ignored, and no error flag is generated.

Can the 11LC010-I/SN be used in automotive applications?

The 11LC010-I/SN is rated for Industrial temperature range (-40°C to +85°C) only. While Microchip offers automotive-grade variants (e.g., 11LC010-E/SN) qualified to -40°C to +125°C, the 11LC010-I/SN is not AEC-Q100 qualified and lacks automotive-specific reliability testing - it should not be deployed in safety-critical or engine-bay automotive systems.

What is the purpose of the STATUS register in the 11LC010-I/SN?

The STATUS register in the 11LC010-I/SN provides real-time visibility into device state: the WIP bit indicates active write cycles, the WEL bit shows write-enable latch status, and BP0/BP1 bits reflect current block protection configuration. It is readable at any time - including during writes - via the RDSR command, enabling robust firmware flow control without fixed delay loops.