Microchip Technology 24LC014T-I/SN

Overview

24LC014T-I/SN 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 from 2.5V to 5.5V. It supports 100 kHz and 400 kHz clock rates, features a 16-byte page write buffer, and delivers 1 µA standby current and 5 ms max write cycle time. It is used in embedded systems for storing calibration data, configuration settings, and firmware parameters.

For engineers reviewing the 24LC014T-I/SN datasheet, 24LC014T-I/SN pinout, 24LC014T-I/SN application, or 24LC014T-I/SN equivalent, key selection criteria include VCC range (2.5–5.5V), industrial temperature rating (–40°C to +85°C), SOIC-8 package compatibility, I²C bus timing compliance, and hardware WP pin functionality.

Technical Context

The 24LC014T-I/SN implements a standard two-wire I²C interface with slave addressing via A0–A2 pins, supporting up to eight devices on one bus. Its internal architecture includes an address pointer, page buffer, HV generator for EEPROM programming, and Schmitt-trigger inputs on SDA/SCL for noise immunity.

It operates in byte-write and page-write modes, with automatic self-timed erase-and-write cycles. Write protection is controlled solely by the WP pin state (VSS = enabled, VCC = inhibited), and acknowledge polling is supported to detect write completion without fixed delays.

Key Specifications

Pinout & Package

24LC014T-I/SN is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package, 3.90 mm body width, RoHS-compliant, with gull-wing leads and standard JEDEC MS-012AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC014T-I/SN, the 24AA014T-I/SN extends low-voltage operation but shares identical packaging and interface behavior, while the AT24C01D-SSHM-T trades hardware write protection for faster clock support - making it suitable only where firmware-controlled security suffices.

Availability

24LC014T-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, and automotive body control modules requiring stable component supply, long-term data retention, and I²C bus compatibility.

Supply support for 24LC014T-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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing infrastructure.

The 24LC014T-I/SN belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-power embedded systems needing reliable, pin-compatible nonvolatile storage with minimal external components.

FAQ

What is the minimum supply voltage required for reliable operation of the 24LC014T-I/SN?

The 24LC014T-I/SN requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Below 2.5V, the device is not specified - unlike the 24AA014 variant, which supports down to 1.7V. Operating at voltages below 2.5V may result in unpredictable write failures or communication errors, especially at temperature extremes.

Does the 24LC014T-I/SN support page write operations, and what is the maximum number of bytes per page?

Yes, the 24LC014T-I/SN supports page write operations with a 16-byte page buffer. Up to 16 bytes can be written in a single I²C transaction initiated by a Start condition and terminated by a Stop condition. Attempting to write more than 16 bytes before issuing Stop causes address wraparound within the same page - so application firmware must enforce page boundary alignment.

How does the WP (Write-Protect) pin function on the 24LC014T-I/SN, and what happens when it is tied to VCC?

When the WP pin of the 24LC014T-I/SN is tied to VCC, all write operations (byte and page) to the entire memory array are inhibited - reads remain fully functional. The device still acknowledges write commands but performs no internal programming. This hardware-level lock prevents accidental or malicious overwrites independent of firmware state, making it essential for safety-critical configuration storage.

Can multiple 24LC014T-I/SN devices share the same I²C bus, and how many are supported?

Yes, up to eight 24LC014T-I/SN devices can share a single I²C bus using hard-wired A0, A1, and A2 address pins to generate unique 3-bit chip addresses. Each device responds only to its assigned 7-bit slave address (1010xxxA), enabling scalable memory expansion to 8 Kbits without additional address decoding logic.

What is the maximum write endurance and data retention specification for the 24LC014T-I/SN?

The 24LC014T-I/SN is rated for 1,000,000 erase/write cycles and guarantees data retention exceeding 200 years at +25°C. These specifications are characterized and ensured per Microchip's Total Endurance™ model - meaning actual field performance meets or exceeds these values under recommended operating conditions, including proper WP pin usage and valid VCC/timing margins.