Microchip Technology 24LC014T-E/MS

Overview

24LC014T-E/MS from Microchip Technology Inc. is a 1 Kbit (128 × 8) I²C-compatible serial EEPROM with automotive-grade temperature operation (−40°C to +125°C), 2.5V–5.5V supply range, and hardware write protection via the WP pin. It supports up to 400 kHz clock frequency, features a 16-byte page write buffer, and delivers 1 µA standby current and 100 kcycles endurance at 25°C. It is used for nonvolatile parameter storage in automotive control modules.

For engineers reviewing the 24LC014T-E/MS datasheet, 24LC014T-E/MS pinout, 24LC014T-E/MS application, or 24LC014T-E/MS equivalent, key selection criteria include its −40°C to +125°C automotive qualification, MSOP-8 package footprint, I²C address flexibility via A0–A2 pins, and hardware write-protection capability - all critical for safety-critical and long-life embedded systems.

Technical Context

The 24LC014T-E/MS implements a standard two-wire I²C interface with slave-only operation, supporting both byte and page write modes. Its internal address pointer auto-increments during sequential reads, and it uses Schmitt-trigger inputs on SDA/SCL for noise immunity.

Write protection is implemented via a dedicated WP pin tied to VCC (full-array lock) or VSS (unlocked); the WP pin is present in the MSOP-8 package but omitted in SOT-23 variants. The device uses on-chip charge pump for EEPROM programming and includes self-timed 5 ms max write cycles with automatic erase.

Key Specifications

Pinout & Package

24LC014T-E/MS is supplied in an 8-lead MSOP package (3.0 mm × 3.0 mm × 1.0 mm height), RoHS-compliant and Pb-free. Pin 1 is marked by laser indentation; the package includes exposed pad (optional VSS connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C01C-SSHM-T and BR24G01FJ-3GE2, the 24LC014T-E/MS uniquely combines automotive temperature qualification, hardware WP pin, and MSOP-8 footprint - delivering fail-safe, drop-in parameter storage for safety-critical automotive subsystems without firmware dependency.

Availability

24LC014T-E/MS is available at Aetrix Electronics and suitable for automotive control units, ADAS calibration modules, and electric power steering systems requiring stable component supply across multi-year production programs.

Supply support for 24LC014T-E/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 microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24LC014T-E/MS belongs to Microchip's automotive-qualified serial EEPROM product line, designed specifically for robust, long-term nonvolatile data storage in harsh-temperature automotive electronics.

FAQ

What is the maximum I²C clock frequency supported by the 24LC014T-E/MS?

The 24LC014T-E/MS supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At voltages below 2.5V, the maximum clock rate drops to 100 kHz. This dual-speed capability ensures compatibility with both legacy 100 kHz buses and modern high-throughput automotive networks. The 24LC014T-E/MS maintains full AC timing compliance across its entire operating range, including at −40°C to +125°C.

Does the 24LC014T-E/MS include hardware write protection?

Yes, the 24LC014T-E/MS includes a dedicated Write-Protect (WP) pin that provides hardware-level lockout of the entire memory array. When WP is tied to VCC, all write operations are inhibited while read access remains fully functional. This feature is physically present in the MSOP-8 package and is essential for preventing inadvertent writes during power-up, brown-out, or firmware update sequences. The 24LC014T-E/MS implements this protection independently of software control.

What package type is used for the 24LC014T-E/MS?

The 24LC014T-E/MS is packaged in an 8-lead MSOP (Mini Small Outline Package) with dimensions 3.0 mm × 3.0 mm × 1.0 mm and pitch of 0.65 mm. It features pin 1 identification via laser marking and an optional exposed pad for thermal or ground connection. This compact, surface-mount package supports automated assembly and meets IPC/JEDEC standards for automotive reliability. The "T-E/MS" suffix explicitly denotes the MSOP-8 automotive-grade variant of the 24LC014T-E/MS.

How many devices can share the same I²C bus using the 24LC014T-E/MS?

Up to eight 24LC014T-E/MS devices can operate on the same I²C bus using the three hardware address pins A0, A1, and A2. Each combination of VSS/VCC on these pins sets a unique 3-bit chip address, yielding I²C slave addresses from 0x50 to 0x57. This allows contiguous 8 Kbit memory expansion without additional address decoding logic. The 24LC014T-E/MS implements this addressing natively in hardware, requiring no firmware overhead for multi-device arbitration.

What is the write endurance and data retention specification for the 24LC014T-E/MS?

The 24LC014T-E/MS guarantees 1,000,000 erase/write cycles and 200 years of data retention at 25°C. These specifications are validated per JEDEC standards and apply across the full automotive temperature range (−40°C to +125°C), with derating applied per Microchip's Total Endurance™ model. The 24LC014T-E/MS achieves this through optimized oxide thickness and charge-pump design, making it suitable for daily recalibration logging in automotive ECUs over 15+ year lifetimes.