Microchip Technology 24LC014-I/MS

Overview

24LC014-I/MS from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM with hardware write protection, organized as a single memory block and operating down to 2.5V. It supports 400 kHz clock speed at V_CC ≥ 2.5V, delivers 1 mA typical active current and 1 µA standby current, and features a 16-byte page write buffer. It is used in embedded systems for storing calibration data, configuration settings, and device identifiers where low-voltage operation and nonvolatile retention are critical.

For engineers reviewing the 24LC014-I/MS datasheet, 24LC014-I/MS pinout, 24LC014-I/MS application, or 24LC014-I/MS equivalent, key selection considerations include its MSOP-8 package, industrial temperature range (–40°C to +85°C), I²C bus compatibility up to 400 kHz, hardware write-protection via WP pin, and 1,000,000 erase/write endurance - all validated for use in power-constrained, space-limited designs requiring long-term data integrity.

Technical Context

The 24LC014-I/MS implements a standard two-wire I²C interface with slave addressing using A0–A2 pins, supporting up to eight devices on one bus. Its internal architecture includes an address pointer, page write buffer, high-voltage generator for EEPROM programming, and Schmitt-trigger inputs on SDA/SCL for noise immunity.

It uses self-timed internal write cycles (max 5 ms), supports byte and page write modes, and enforces hardware write protection when WP is tied to V_CC. The device operates across 2.5V–5.5V supply and meets industrial temperature requirements, with ESD protection >4 kV and data retention >200 years.

Key Specifications

Pinout & Package

24LC014-I/MS is packaged in an 8-lead MSOP (Mini Small Outline Package) with 0.65 mm lead pitch and exposed pad option. This compact surface-mount package measures 3.0 mm × 3.0 mm × 1.0 mm and is optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA014-I/MS and AT24C01D-MAHM-T, the 24LC014-I/MS uniquely balances 400 kHz speed, industrial temperature reliability, and hardware write protection in a space-constrained MSOP-8 package - making it optimal for next-generation industrial and medical edge devices requiring both performance and robustness.

Availability

24LC014-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, and embedded bootloader settings requiring stable component supply, long-term obsolescence management, and traceable sourcing.

Supply support for 24LC014-I/MS 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 leading provider of microcontroller, analog, and memory solutions, headquartered in Chandler, Arizona, with global design, manufacturing, and sales operations.

The 24LC014-I/MS belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power nonvolatile data storage in space- and power-constrained embedded systems across industrial, automotive, and medical markets.

FAQ

What is the maximum I²C clock frequency supported by the 24LC014-I/MS?

The 24LC014-I/MS supports up to 400 kHz I²C clock frequency when V_CC is 2.5V or higher. At supply voltages below 2.5V, the maximum clock rate drops to 100 kHz. This dual-speed capability ensures interoperability with both legacy and high-performance I²C masters while maintaining timing compliance per specification DS21809G.

Does the 24LC014-I/MS require external pull-up resistors on SDA and SCL lines?

Yes, the 24LC014-I/MS requires external pull-up resistors on both SDA and SCL lines because these pins are open-drain. For 400 kHz operation, a 2 kΩ pull-up to V_CC is recommended; for 100 kHz, 10 kΩ is typical. Proper pull-up values ensure signal rise times meet AC specifications and prevent bus contention in multi-device configurations.

How does the WP (Write-Protect) pin function on the 24LC014-I/MS?

The WP pin on the 24LC014-I/MS is an active-high hardware write-protection input. When tied to V_CC, it disables all write operations (byte and page) to the entire memory array while allowing unrestricted read access. When tied to V_SS, writes are enabled. This feature prevents accidental or malicious overwrites of critical configuration data during power-up, reset, or firmware updates.

What is the endurance and data retention specification for the 24LC014-I/MS?

The 24LC014-I/MS guarantees 1,000,000 erase/write cycles per memory location and >200 years of data retention at +25°C. These values are characterized and ensured per Microchip's Total Endurance™ model. Real-world retention remains robust across the full industrial temperature range (–40°C to +85°C), making the 24LC014-I/MS suitable for mission-critical, long-lifecycle deployments.

Is the 24LC014-I/MS pin-compatible with other Microchip EEPROMs in the same family?

Yes, the 24LC014-I/MS is pin-compatible with other 8-pin variants in the 24AA014/24LC014 family, including PDIP, SOIC, TSSOP, DFN, and TDFN packages. All share identical pin functions (A0–A2, VSS, SDA, SCL, WP, VCC) and electrical behavior. The MSOP-8 footprint matches industry-standard land patterns, enabling direct PCB reuse across package variants without layout modification.