Microchip Technology 24LC014-I/P

Overview

24LC014-I/P 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/400 kHz clock rates, features 16-byte page write buffering, and delivers 1 μA standby current and 5 ms max write cycle time. It is widely used in embedded system configuration storage for industrial controllers and sensor calibration data retention.

For engineers reviewing the 24LC014-I/P datasheet, 24LC014-I/P pinout, 24LC014-I/P application, or 24LC014-I/P equivalent, this page provides verified electrical specs, package mapping to 8-lead PDIP, validated I²C timing compliance, and confirmed alternative parts for industrial-grade EEPROM replacement scenarios.

Technical Context

The 24LC014-I/P implements a two-wire I²C interface with Schmitt-trigger inputs on SDA/SCL for noise immunity, and uses internal high-voltage generation for EEPROM cell programming. Its address decoding logic accepts three hardware-configurable chip select bits (A0–A2), enabling up to eight devices on one bus.

Write operations are managed via an internal 16-byte page buffer and self-timed erase/write cycles; hardware write protection is enforced by the WP pin tied to VCC. The device maintains full I²C protocol compliance-including START/STOP detection, ACK polling, and addressable random/sequential read modes-across its −40°C to +85°C industrial temperature range.

Key Specifications

Pinout & Package

24LC014-I/P is supplied in an 8-lead PDIP (Plastic Dual In-line Package) with 0.300-inch body width, lead finish matte tin, and RoHS-compliant construction. Pin 1 is marked by laser indentation; pin 1 identifier is located at top-left corner when notch faces upward.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA014-I/P, the 24LC014-I/P provides stricter 2.5V–5.5V operation ideal for fixed-rail industrial designs, while AT24C01D-SSHM-T offers a second-source option with matching package and endurance but requires functional verification of write-protect implementation.

Availability

24LC014-I/P is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration memory, and power meter firmware parameter logging requiring stable component supply across extended production cycles.

Supply support for 24LC014-I/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-I/P belongs to Microchip's serial EEPROM product line, engineered specifically for reliable, low-power nonvolatile data storage in industrial, automotive, and consumer applications demanding long-term data integrity.

FAQ

What is the minimum operating voltage for the 24LC014-I/P?

The 24LC014-I/P operates from 2.5V to 5.5V. Unlike the 24AA014 variant, it does not support voltages below 2.5V - attempting operation at 1.8V will result in undefined behavior or failure to respond on the I²C bus. This makes the 24LC014-I/P appropriate for stable 3.3V or 5V systems but unsuitable for ultra-low-voltage battery-powered designs.

Does the 24LC014-I/P support 400 kHz I²C communication at all supply voltages?

Yes, the 24LC014-I/P supports 400 kHz I²C clock frequency across its full 2.5V–5.5V VCC range. The datasheet confirms 400 kHz operation is valid for VCC ≥ 2.5V; no derating is required. This allows full fast-mode performance in 3.3V and 5V applications without timing margin concerns.

How many devices can share the same I²C bus with the 24LC014-I/P?

Up to eight 24LC014-I/P devices can operate on a single I²C bus using unique combinations of the A0, A1, and A2 address pins. Each pin must be hardwired to either VSS or VCC to set a distinct 3-bit slave address. All eight addresses (0x50–0x57) are valid and fully supported in the 24LC014-I/P's PDIP package.

What happens when the WP pin is left floating on the 24LC014-I/P?

The WP pin on the 24LC014-I/P must be actively driven to either VSS (enables writes) or VCC (disables writes). Leaving it floating violates the absolute maximum ratings and may cause unpredictable write-enable states, risking unintended data corruption or failed writes. A pull-down resistor to VSS is recommended unless hardware write protection is required.

Is the 24LC014-I/P pin-compatible with other Microchip 1 Kbit EEPROMs like the 24LC01B?

No, the 24LC014-I/P is not pin-compatible with the obsolete 24LC01B. While both are 8-pin PDIP EEPROMs, the 24LC01B lacks the A2 pin (uses only A0/A1) and has different internal addressing and timing. The 24LC014-I/P requires all three address pins (A0–A2) and supports full 8-device addressing - direct substitution would cause address conflicts or communication failure.