Microchip Technology 24AA014-I/P

Overview

24AA014-I/P from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 1.7V to 5.5V with hardware write protection, 400 kHz max clock rate (100 kHz below 2.5V), and 1 μA typical standby current. It supports up to eight devices on one bus via A0–A2 address pins and is used for nonvolatile parameter storage in embedded control systems.

For engineers reviewing the 24AA014-I/P datasheet, 24AA014-I/P pinout, 24AA014-I/P application, or 24AA014-I/P equivalent, key selection criteria include low-voltage operation down to 1.7V, industrial temperature range (−40°C to +85°C), page-write capability (up to 16 bytes), 1 million erase/write cycles, and compatibility with standard I²C master controllers requiring minimal external components.

Technical Context

The 24AA014-I/P implements a two-wire I²C interface with Schmitt-trigger inputs on SDA and SCL for noise immunity, supports both byte and page write modes with self-timed internal write cycles (≤5 ms), and uses hardware-based write protection via the WP pin tied to VCC or VSS. Its address decoding logic accepts three chip-select bits (A0–A2) to enable multi-device bus configurations.

It features an internal address pointer that auto-increments during sequential reads, supports current-address, random, and sequential read operations, and relies on acknowledge polling to detect write completion-no external timing delays required. The device operates across 1.7V–5.5V with guaranteed DC/AC specifications over the full industrial temperature range.

Key Specifications

Pinout & Package

The 24AA014-I/P is supplied in an 8-lead PDIP package (0.300" wide), with pin 1 identified by a notch or laser mark. This through-hole package supports manual prototyping and legacy PCB designs requiring robust mechanical mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC014-I/P and AT24C01D-SSHM-T, the 24AA014-I/P uniquely supports true 1.7V operation and provides dedicated hardware write protection - critical for safety-critical or battery-constrained designs where voltage headroom and fail-safe data integrity are non-negotiable.

Availability

24AA014-I/P is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart energy metering requiring stable component supply across extended lifecycle commitments.

Supply support for 24AA014-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 devices, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.

The 24AA014-I/P belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in space-constrained and voltage-flexible embedded systems.

FAQ

What is the minimum operating voltage for the 24AA014-I/P?

The 24AA014-I/P operates down to 1.7V, making it compatible with 1.8V logic families and battery-powered systems where supply voltage may sag under load. This is a key differentiator from the 24LC014-I/P, which requires a minimum of 2.5V. The 24AA014-I/P maintains full I²C functionality-including 100 kHz clock support-at 1.7V, and its 1 μA standby current helps extend battery life in always-on monitoring applications.

How does hardware write protection work on the 24AA014-I/P?

The 24AA014-I/P uses a dedicated WP (Write-Protect) pin: when tied to VCC, all write operations-including byte, page, and erase-are disabled while read operations remain fully functional. This hardware-level lock prevents accidental or malicious overwrites without requiring firmware intervention or command authentication. Unlike software-protected EEPROMs, the 24AA014-I/P's WP function remains active even during brown-out or reset conditions, ensuring data integrity in unstable power environments.

Can multiple 24AA014-I/P devices share the same I²C bus?

Yes - the 24AA014-I/P supports up to eight devices on a single I²C bus using its three hardware address inputs (A0, A1, A2). Each device is assigned a unique 3-bit slave address by hardwiring these pins to VSS or VCC, enabling contiguous 8 Kbit memory expansion. For example, connecting A2–A0 as 000, 001, and 010 yields addresses 0x50, 0x51, and 0x52. This eliminates the need for multiplexers or additional GPIOs in systems requiring scalable nonvolatile storage.

What is the maximum write cycle time for the 24AA014-I/P?

The 24AA014-I/P has a maximum write cycle time of 5 ms for both byte and page writes, regardless of VCC level or temperature. This self-timed internal cycle includes automatic erase and programming, so no external delay is needed - firmware can use acknowledge polling (repeated START + control byte) to detect completion. This deterministic timing simplifies real-time system design and avoids blocking interrupts longer than necessary, especially important in time-critical embedded control loops.

Is the 24AA014-I/P RoHS compliant and lead-free?

Yes, the 24AA014-I/P is Pb-free and RoHS compliant per Microchip's DS21809G documentation. It uses matte tin (Sn) plating per JEDEC standards, and the "P" suffix in the part number denotes PDIP packaging with lead-free finish. Traceability codes and Pb-free markings appear on the package or reel label per Microchip's conversion guidelines. This ensures compliance with EU WEEE and RoHS directives, as well as customer sustainability and environmental requirements for industrial and medical end equipment.