Microchip Technology 24LC024-I/P

Overview

24LC024-I/P 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 400 kHz clock rate (100 kHz below 2.5V), features 16-byte page write buffer, and delivers typical standby current of 1 μA and read current of 1 mA. It is used in industrial sensor calibration storage and embedded system configuration retention.

For engineers reviewing the 24LC024-I/P datasheet, 24LC024-I/P pinout, 24LC024-I/P application, or 24LC024-I/P equivalent, key selection considerations include its industrial temperature range (–40°C to +85°C), hardware write-protect functionality, 8-pin PDIP package, and compatibility with multi-device I²C bus topologies up to eight devices.

Technical Context

The 24LC024-I/P implements a two-wire I²C interface with Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce. Its address decoding uses A0–A2 pins to support up to eight devices on a single bus, with fixed 4-bit control code '1010' and R/W bit determining operation mode.

Internally, it employs a self-timed erase/write cycle with 5 ms maximum page write time, 16-byte page buffer, and on-chip high-voltage generator for EEPROM programming. Write protection is hardware-enforced via the WP pin tied to VCC, disabling all writes to the entire 256-byte array.

Key Specifications

Pinout & Package

24LC024-I/P is supplied in an 8-lead plastic dual in-line package (PDIP), 300 mil width, with through-hole mounting and industry-standard pin layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC024-I/P, 24AA024-I/P offers lower-voltage operation but identical pinout and WP functionality in PDIP, while AT24C02-PU trades hardware protection for broader vendor availability and simpler address mapping - critical for BOM flexibility versus security assurance.

Availability

24LC024-I/P is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, and IoT edge device identity management requiring stable component supply across extended production cycles.

Supply support for 24LC024-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 microcontroller, analog, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing infrastructure.

The 24LC024-I/P belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power nonvolatile data storage in industrial, automotive, and consumer applications demanding proven endurance and long-term data retention.

FAQ

What is the operating voltage range for the 24LC024-I/P?

The 24LC024-I/P operates from 2.5V to 5.5V. Operation below 2.5V is not supported - unlike the 24AA024 variant, which functions down to 1.7V. This voltage range ensures compatibility with standard 3.3V and 5V digital systems while maintaining stable EEPROM programming margins. The 24LC024-I/P includes internal VCC threshold detection that disables writes below ~1.5V to prevent data corruption.

Does the 24LC024-I/P support hardware write protection?

Yes, the 24LC024-I/P includes a dedicated WP (Write-Protect) pin. When tied to VCC, it disables all write operations to the entire 256-byte memory array. This hardware-level lock is independent of software state and remains active during power transitions, making it essential for safeguarding calibration data or firmware patches. The WP pin is present and functional in the PDIP package of the 24LC024-I/P.

What is the maximum I²C clock frequency supported by the 24LC024-I/P?

The 24LC024-I/P supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At voltages below 2.5V, the maximum clock rate drops to 100 kHz - though this condition does not apply to the 24LC024-I/P since its minimum VCC is 2.5V. This 400 kHz capability enables faster configuration reads compared to legacy 100 kHz EEPROMs, reducing boot-time latency in time-sensitive applications.

How many devices can be connected on the same I²C bus using the 24LC024-I/P?

Up to eight 24LC024-I/P devices can be connected on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit slave addresses. Each pin must be hardwired to either VCC or VSS to select one of eight possible combinations (000–111). This cascading capability allows up to 16 Kbits of contiguous EEPROM space when multiple 24LC024-I/P units are deployed, simplifying memory expansion without additional address decoding logic.

What package type is used for the 24LC024-I/P part number?

The 24LC024-I/P uses an 8-lead plastic dual in-line package (PDIP) with 300 mil body width and through-hole mounting. The "I" denotes Industrial temperature grade (–40°C to +85°C), and "P" explicitly identifies the PDIP package per Microchip's part numbering convention. This package is compatible with legacy socketed designs and manual soldering workflows, distinguishing it from SOIC, TSSOP, or DFN variants of the same base part.