Microchip Technology 24AA024T-I/MNY

Overview

24AA024T-I/MNY from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 1.7V to 5.5V with industrial temperature range (–40°C to +85°C), hardware write-protection via WP pin, and 16-byte page write buffer. It enables nonvolatile storage for MAC address, calibration data, and configuration settings in embedded controllers and IoT edge nodes.

For engineers reviewing the 24AA024T-I/MNY datasheet, 24AA024T-I/MNY pinout, 24AA024T-I/MNY application, or 24AA024T-I/MNY equivalent, key selection considerations include its 1 μA standby current, Schmitt-triggered I²C inputs for noise immunity, 400 kHz clock support at V_CC ≥ 1.8V, and factory-programmable capability for secure device identity storage.

Technical Context

The 24AA024T-I/MNY implements a standard two-wire I²C slave interface with fixed 7-bit address prefix '1010' and three programmable chip-select bits (A2–A0), enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and wraps from 0xFF to 0x00.

It integrates Schmitt-trigger inputs on SDA/SCL with 50 ns spike suppression and hysteresis of 0.05×V_CC, plus slope-controlled outputs to suppress ground bounce. Write protection is implemented via dedicated WP pin tied to V_CC (enabled) or V_SS (disabled), and is physically present only on 24XX024 variants-not on 24XX025.

Key Specifications

Pinout & Package

24AA024T-I/MNY is packaged in an 8-lead DFN (2 mm × 3 mm, 0.5 mm pitch) with wettable flank leads for automated optical inspection. The package is RoHS-compliant, Pb-free, and rated for industrial temperature operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA024T-I/MNY, the 24LC024T-I/MNY offers extended temperature range and automotive qualification but removes factory programming capability, while the AT24C02D-SSHM-T provides identical electrical specs in SOIC-8 but omits DFN packaging and laser-marked traceability.

Availability

24AA024T-I/MNY is available at Aetrix Electronics and suitable for industrial automation, IoT endpoint devices, and medical instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed factory-programmable MAC address storage.

Supply support for 24AA024T-I/MNY 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 24AA024T-I/MNY belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power, I²C-based nonvolatile storage in cost-sensitive and space-constrained embedded systems.

FAQ

What is the maximum I²C clock frequency supported by the 24AA024T-I/MNY?

The 24AA024T-I/MNY supports up to 400 kHz I²C clock frequency when V_CC ≥ 1.8V. At V_CC < 1.8V, maximum clock rate drops to 100 kHz per AC specifications in DS21210N. This dual-speed capability allows flexible integration across 1.8V sensor nodes and 3.3V/5V host controllers without protocol translation.

Does the 24AA024T-I/MNY have hardware write protection, and how is it enabled?

Yes, the 24AA024T-I/MNY includes a dedicated WP (Write-Protect) pin. To enable hardware write protection, tie WP to V_CC; this locks the entire 2 Kbit memory array against write or erase commands. When WP is tied to V_SS, full read/write access is permitted. The WP pin is physically present and functional on the 24AA024T-I/MNY.

Can multiple 24AA024T-I/MNY devices share the same I²C bus?

Yes, up to eight 24AA024T-I/MNY devices can operate on a single I²C bus using unique 3-bit hardware addresses set by A2, A1, and A0 pins. Each device responds only when its address matches the transmitted control byte (1010xxx), enabling scalable memory expansion to 16 Kbits without additional addressing logic.

What package type is used for the 24AA024T-I/MNY, and what are its key mechanical features?

The 24AA024T-I/MNY uses an 8-lead DFN package (2 mm × 3 mm, 0.5 mm pitch) with wettable flank leads. This package supports automated optical inspection (AOI), offers low profile (<0.8 mm height), and provides thermal and electrical performance advantages over SOIC or TSSOP in dense PCB layouts.

Is factory programming available for the 24AA024T-I/MNY, and what data can be pre-programmed?

Yes, factory programming is available for the 24AA024T-I/MNY. Microchip supports pre-programming of permanent data such as IEEE 48-bit MAC addresses, unique serial numbers, or calibration constants into the EEPROM array prior to shipment, enabling secure device identity and eliminating post-manufacturing programming steps.