Microchip Technology 24LC024T/SN

Overview

24LC024T/SN from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, operating from 2.5V to 5.5V, supporting up to 400 kHz clock rate, and rated for industrial temperature range (–40°C to +85°C). It features 16-byte page write buffer, Schmitt-trigger inputs, and >1 million erase/write cycles - used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.

For engineers reviewing the 24LC024T/SN datasheet, 24LC024T/SN pinout, 24LC024T/SN application, or 24LC024T/SN equivalent, key selection considerations include VCC voltage compatibility (2.5–5.5 V), hardware WP pin functionality, 8-pin SOIC package dimensions, I²C bus timing compliance (100/400 kHz), and endurance/data retention specs for long-life nonvolatile storage.

Technical Context

The 24LC024T/SN implements a standard two-wire I²C interface with open-drain SDA/SCL pins, internal address pointer auto-increment, and cascading support for up to eight devices on one bus via A0–A2 address pins. Its write-protect logic is hardware-controlled via the dedicated WP pin tied to VCC/VSS.

It uses low-power CMOS technology with typical standby current of 1 μA and active read current of 1 mA, incorporates slope-controlled outputs to suppress ground bounce, and includes built-in noise filtering on SDA/SCL with 50 ns spike suppression and Schmitt-trigger hysteresis (0.05 × VCC).

Key Specifications

Pinout & Package

24LC024T/SN is packaged in an 8-pin SOIC (3.90 mm body width, 1.27 mm pitch), RoHS-compliant and Pb-free. Pin 1 is marked by laser dot; package meets JEDEC MS-012AA standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA024T/SN, the 24LC024T/SN trades wider voltage flexibility for guaranteed 2.5 V+ operation and integrated hardware write protection; versus AT24C02D-SSHM-T, it adds deterministic WP pin control essential for industrial and medical use cases.

Availability

24LC024T/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and smart energy meter configuration requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 24LC024T/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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products, with global manufacturing and quality certifications.

The 24LC024T/SN belongs to Microchip's 24LCxx family of I²C EEPROMs designed for robust, low-power, and pin-compatible nonvolatile storage in space-constrained embedded systems.

FAQ

What is the maximum I²C clock frequency supported by the 24LC024T/SN?

The 24LC024T/SN supports up to 400 kHz I²C clock frequency when VCC ≥ 1.8 V. At VCC < 2.5 V, maximum clock rate drops to 100 kHz per Microchip DS21210N specifications. This dual-speed capability ensures interoperability with both legacy and high-speed controllers while maintaining signal integrity.

Does the 24LC024T/SN have hardware write protection, and how is it implemented?

Yes, the 24LC024T/SN includes a dedicated hardware write-protect (WP) pin. When WP is tied to VCC, the entire 2 Kbit memory array is locked against write operations; tying WP to VSS enables full write access. This pin-based lock operates independently of I²C commands and remains active during power transitions.

What package type is used for the 24LC024T/SN part number?

The 24LC024T/SN uses an 8-pin SOIC package with 3.90 mm body width and 1.27 mm lead pitch (JEDEC MS-012AA). The "SN" suffix explicitly denotes this SOIC variant, distinguishing it from PDIP (P), TSSOP (T), DFN (D), or MSOP (M) versions of the same base part.

How many devices can be connected on the same I²C bus using the 24LC024T/SN?

Up to eight 24LC024T/SN devices can share one I²C bus using the three hardware address pins A0, A1, and A2. Each device must have a unique combination of these pins tied to VSS or VCC to generate distinct 7-bit slave addresses (1010xxxR/W), enabling contiguous 16 Kbit expansion.

What is the page write buffer size of the 24LC024T/SN, and why does it matter?

The 24LC024T/SN has a 16-byte page write buffer. This allows up to 16 bytes to be written in a single I²C transaction, significantly reducing bus overhead versus individual byte writes. It improves system responsiveness and minimizes bus contention in multi-master environments.