Microchip Technology 24LC014T-I/OT

Overview

24LC014T-I/OT 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 embedded system configuration storage where low-voltage operation and bus scalability are required.

For engineers reviewing the 24LC014T-I/OT datasheet, 24LC014T-I/OT pinout, 24LC014T-I/OT application, or 24LC014T-I/OT equivalent, key selection criteria include its 2.5–5.5 V supply range, SOT-23-6 package footprint, I²C address flexibility (A0/A1 configurable), WP-enabled hardware protection, and industrial temperature rating (–40°C to +85°C).

Technical Context

The 24LC014T-I/OT 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 wraps at 07Fh, enabling full-memory streaming without external address management.

It uses Schmitt-trigger inputs on SDA/SCL for noise immunity, features programmable chip addressing via A0/A1 pins (A2 not present in SOT-23), and relies on external pull-up resistors (2 kΩ typical for 400 kHz). Write protection is implemented solely through the WP pin-tied to VSS for enable, VCC for full-array lockout.

Key Specifications

Pinout & Package

24LC014T-I/OT is packaged in a 6-lead SOT-23 surface-mount package (3.0 mm × 1.7 mm × 1.3 mm), optimized for high-density PCB layouts and automated assembly. Pin 1 is marked by laser indentation; no exposed pad is present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC014T-I/OT, 24AA014T-I/OT extends operational voltage lower but shares identical timing and software compatibility, while AT24C01D-SSHM-T adds ESD headroom and polling capability at the cost of different manufacturer qualification and documentation structure.

Availability

24LC014T-I/OT is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded configuration storage, and automotive body control applications requiring stable component supply across extended production lifecycles.

Supply support for 24LC014T-I/OT 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 manufacturing and support infrastructure.

The 24LC014T-I/OT belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable nonvolatile storage with minimal external components and I²C bus compatibility.

FAQ

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

The 24LC014T-I/OT requires a minimum supply voltage of 2.5 V for guaranteed functionality across its full industrial temperature range (–40°C to +85°C). Operation below this threshold is not specified and may result in incomplete writes, read errors, or loss of data integrity. This distinguishes it from the 24AA014T-I/OT, which supports down to 1.7 V.

Does the 24LC014T-I/OT include a write-protect (WP) pin in its SOT-23-6 package?

No, the 24LC014T-I/OT in SOT-23-6 packaging does not include a WP pin. As confirmed in the DS21809G datasheet Section 6.3 and Pin Function Table, WP is omitted in the 6-lead variant. Hardware write protection is therefore unavailable; all memory locations remain writable whenever the device is powered and addressed.

How many devices can be connected on the same I²C bus using the 24LC014T-I/OT?

Up to four 24LC014T-I/OT devices can share a single I²C bus, enabled by the A0 and A1 address inputs. Since the SOT-23 package lacks A2, the slave address format is limited to 1010xx0 (where xx = A1/A0), yielding four unique combinations. Each device must have distinct A0/A1 logic levels tied to VSS or VCC.

What is the maximum supported I²C clock frequency for the 24LC014T-I/OT?

The 24LC014T-I/OT supports a maximum I²C clock frequency of 400 kHz under standard conditions (VCC ≥ 2.5 V). At this rate, timing parameters such as THIGH (≥600 ns), TLOW (≥1300 ns), and rise/fall times (≤300 ns) must be met. Clock rates above 400 kHz are not supported and will violate AC specifications.

Is the 24LC014T-I/OT RoHS compliant and lead-free?

Yes, the 24LC014T-I/OT is Pb-free and RoHS compliant, as explicitly stated in the "Features" section of the DS21809G datasheet. The "T" suffix denotes tape-and-reel packaging, and the "I/OT" suffix confirms industrial temperature grade and RoHS-compliant construction per JEDEC standards.