Microchip Technology 24LC014-E/P

Overview

24LC014-E/P from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz max clock rate and hardware write protection via WP pin. It supports page writes up to 16 bytes, delivers ≤5 ms write cycle time, and guarantees 1,000,000 erase/write cycles with >200 years data retention. It is used in industrial control systems for storing calibration data, configuration settings, and firmware revision identifiers.

For engineers reviewing the 24LC014-E/P datasheet, 24LC014-E/P pinout, 24LC014-E/P application, or 24LC014-E/P equivalent, key selection criteria include its automotive-grade temperature range (–40°C to +125°C), PDIP-8 package compatibility, I²C bus address flexibility (up to eight devices), and low-power standby current (≤1 µA at 5.5V).

Technical Context

The 24LC014-E/P implements a standard two-wire I²C interface with Schmitt-trigger inputs on SDA and SCL for noise immunity, supporting both 100 kHz (VCC < 2.5V) and 400 kHz (VCC ≥ 2.5V) operation. Its internal architecture includes an address pointer, page buffer, HV generator for EEPROM programming, and hardware write-protection logic tied to the WP pin.

It operates as a slave device only, responding to 7-bit slave addresses formed by fixed '1010' control code plus A2/A1/A0 chip-select bits. The device uses self-timed internal write cycles with auto-erase and supports acknowledge polling to detect write completion without fixed delay timing.

Key Specifications

Pinout & Package

24LC014-E/P is supplied in an 8-lead PDIP (Plastic Dual In-line Package) with 0.300-inch body width, RoHS-compliant matte tin lead finish, and laser-marked pin 1 identifier. Pin 1 is bottom-left when notch faces up.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC014-I/P, the 24LC014-E/P adds automotive-grade thermal robustness and AEC-Q100 alignment; compared with AT24C01D-SSHM-T, it provides hardware-level write security and guaranteed 400 kHz timing at 2.5V+, making it preferable for safety-critical automotive and industrial deployments.

Availability

24LC014-E/P is available at Aetrix Electronics and suitable for automotive body control units, industrial programmable logic controllers, medical infusion pump calibration storage, and smart energy meter firmware identification requiring stable component supply across extended lifecycle programs.

Supply support for 24LC014-E/P 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 24LC014-E/P belongs to Microchip's serial EEPROM product line, engineered specifically for automotive and industrial applications demanding extended temperature operation, high endurance, and I²C bus compatibility without protocol complexity.

FAQ

What is the maximum I²C clock frequency supported by the 24LC014-E/P?

The 24LC014-E/P supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At VCC below 2.5V, the maximum clock rate drops to 100 kHz. This dual-speed capability ensures interoperability with both legacy and modern microcontrollers while maintaining timing compliance across its full operating voltage range. The 24LC014-E/P datasheet specifies exact setup/hold times for both modes to guarantee reliable communication.

Does the 24LC014-E/P have hardware write protection, and how is it implemented?

Yes, the 24LC014-E/P includes hardware write protection via the WP (Write-Protect) pin. When WP is tied to VCC, all write operations-including byte, page, and erase-are disabled, while read operations remain fully functional. This feature is implemented in silicon and does not rely on software locks or status registers. The 24LC014-E/P maintains this protection even during brown-out or reset conditions, ensuring data integrity in harsh automotive environments.

What is the endurance and data retention specification for the 24LC014-E/P?

The 24LC014-E/P guarantees 1,000,000 erase/write cycles and greater than 200 years of data retention at 25°C. These values are characterized per JEDEC standards and validated across the full automotive temperature range (–40°C to +125°C). Endurance testing is performed at worst-case voltage (5.5V) and temperature (+125°C), ensuring real-world reliability in engine control units and other high-stress applications where the 24LC014-E/P is deployed.

Can multiple 24LC014-E/P devices share the same I²C bus, and how many?

Up to eight 24LC014-E/P devices can share a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit chip-select codes. Each device responds only to its assigned 7-bit slave address (1010xxxR/W), enabling contiguous 8 Kbit memory expansion. The 24LC014-E/P's address decoding is hardwired and deterministic-no configuration registers or initialization sequences are required before addressing.

What package type is used for the 24LC014-E/P, and what are its key mechanical features?

The 24LC014-E/P is packaged in an 8-lead PDIP (Plastic Dual In-line Package) with 0.300-inch body width, 0.100-inch lead pitch, and matte tin (Pb-free) plating. It features laser-marked pin 1 identification, RoHS compliance, and is rated for automated through-hole insertion and wave soldering. The PDIP-8 form factor provides robust mechanical stability and thermal performance for high-reliability automotive and industrial PCB assemblies where the 24LC014-E/P is commonly deployed.