Microchip Technology 24LC024T-E/MS

Overview

24LC024T-E/MS from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 2.5V to 5.5V with hardware write-protection via the WP pin. It supports up to 400 kHz clock rate, features 16-byte page write buffer, and delivers ≤5 ms write cycle time. Used in industrial sensor calibration storage and embedded system configuration retention.

For engineers reviewing the 24LC024T-E/MS datasheet, 24LC024T-E/MS pinout, 24LC024T-E/MS application, or 24LC024T-E/MS equivalent, key selection factors include its MSOP-8 package, -40°C to +125°C automotive temperature grade, hardware write-protect functionality, and guaranteed 1 million erase/write cycles with >200-year data retention.

Technical Context

This device implements a standard two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs for noise immunity on shared buses. Its internal address pointer auto-increments during sequential reads and wraps from 0xFF to 0x00, enabling full-array streaming without external address management.

The 24LC024T-E/MS integrates a dedicated hardware write-protect circuit tied to the WP pin-when pulled high, it disables all array writes regardless of command sequence. It uses an internal high-voltage generator for EEPROM programming and includes VCC threshold detection to inhibit writes below 1.5V.

Key Specifications

Pinout & Package

24LC024T-E/MS is housed in an 8-lead MSOP package (3.0 mm × 3.0 mm × 1.0 mm body, 0.65 mm pitch), optimized for space-constrained automotive and industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC024T-E/MS, the 24AA024T-I/MS offers broader voltage flexibility but lacks automotive qualification, while the AT24C02D-SSHM-T eliminates hardware write protection-making 24LC024T-E/MS the only option meeting AEC-Q100 and requiring fail-safe memory locking.

Availability

24LC024T-E/MS is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLCs, and medical device configuration storage requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 24LC024T-E/MS 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 24LC024T-E/MS belongs to Microchip's legacy serial EEPROM product line, engineered specifically for automotive and industrial applications demanding high reliability, extended temperature operation, and hardware-enforced data integrity.

FAQ

What is the maximum I²C clock frequency supported by the 24LC024T-E/MS?

The 24LC024T-E/MS supports up to 400 kHz I²C clock frequency when VCC ≥ 2.5V. At lower voltages, the maximum clock rate drops to 100 kHz. This dual-speed capability ensures interoperability across diverse host controller platforms while maintaining timing compliance per I²C specification. The 24LC024T-E/MS does not require external clock stretching or arbitration logic.

Does the 24LC024T-E/MS have built-in write protection, and how is it enabled?

Yes, the 24LC024T-E/MS includes a hardware write-protect (WP) pin. When WP is tied to VCC, the entire 2 Kbit memory array is locked against all write and erase operations-even during active I²C transactions. This physical lock remains effective regardless of power state or software execution, making it ideal for safety-critical applications. The 24LC024T-E/MS WP function is independent of any internal registers or command sequences.

What package type and dimensions does the 24LC024T-E/MS use?

The 24LC024T-E/MS is supplied in an 8-lead MSOP package measuring 3.0 mm × 3.0 mm × 1.0 mm with 0.65 mm lead pitch. This surface-mount outline provides superior thermal performance and board-space efficiency compared to SOIC or TSSOP variants. The MSOP footprint is fully compatible with standard reflow profiles and automated optical inspection (AOI) systems used in high-reliability manufacturing.

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

Up to eight 24LC024T-E/MS devices can be connected on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit slave addresses (000–111). Each device responds only to its assigned address, enabling scalable memory expansion without additional bus controllers. The 24LC024T-E/MS supports contiguous addressing across devices when software maps A0–A2 to higher address bits (A8–A10).

What is the guaranteed endurance and data retention for the 24LC024T-E/MS?

The 24LC024T-E/MS is guaranteed for 1,000,000 erase/write cycles and >200 years of data retention at +85°C ambient temperature. These specifications are validated per JEDEC standards and apply across the full automotive temperature range (-40°C to +125°C). The 24LC024T-E/MS achieves this reliability through oxide degradation mitigation techniques and charge-loss compensation in its floating-gate EEPROM cells.