Microchip Technology 24FC02-I/MS

Overview

24FC02-I/MS from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 1 MHz clock support (down to 1.7V), 8-byte page buffer, and industrial temperature range (–40°C to +85°C) in an 8-lead MSOP package. It enables nonvolatile storage for configuration data in space-constrained embedded systems.

For engineers reviewing the 24FC02-I/MS datasheet, 24FC02-I/MS pinout, 24FC02-I/MS application, or 24FC02-I/MS equivalent, key selection criteria include low-voltage operation (1.7V), high-speed I²C timing (1 MHz), write-protection via WP pin, endurance (>1M cycles), and MSOP footprint compatibility with PCB layout constraints.

Technical Context

The 24FC02-I/MS implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer supports current-address, random, and sequential read modes, while the 8-byte page buffer enables efficient multi-byte writes without host intervention between bytes.

Write protection is implemented via a dedicated WP pin tied to VCC to inhibit all write operations across the full 00h–FFh address space; no internal pull-up/pull-down is required. The device uses self-timed erase/write cycles with ACK polling support to determine completion without fixed delay timing.

Key Specifications

Pinout & Package

8-Lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed pad option (not electrically connected). Pin 1 marked by notch or dot; pin numbering follows standard MSOP convention (counterclockwise from mark).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA02-I/MS and AT24C02D-MAHM-T, the 24FC02-I/MS uniquely delivers 1 MHz operation *with* AEC-Q100 qualification and 1M-cycle endurance in the same MSOP-8 footprint-enabling automotive-grade performance without layout changes.

Availability

24FC02-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, and IoT edge node identity applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 24FC02-I/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 24FC02 belongs to Microchip's 24XX02 family of I²C serial EEPROMs, designed specifically for reliable, low-voltage nonvolatile storage in space-constrained embedded systems across automotive, industrial, and medical markets.

FAQ

What is the maximum I²C clock frequency supported by the 24FC02-I/MS?

The 24FC02-I/MS supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V VCC range. This is confirmed in the Device Selection Table and AC Characteristics section of the DS20001709N datasheet. At lower voltages (1.7V ≤ VCC < 2.5V), it maintains full 1 MHz capability-unlike the 24AA02, which drops to 100 kHz below 2.5V. The 24FC02-I/MS achieves this with optimized internal timing and slope-controlled outputs.

How does the WP pin function on the 24FC02-I/MS?

The WP (Write-Protect) pin on the 24FC02-I/MS is a logic-level input that disables all write operations when tied to VCC. When WP = VCC, the entire memory array (addresses 00h–FFh) becomes read-only; reads remain fully functional. When WP = VSS, normal read/write access is enabled. No internal pull-up or pull-down is present, so the pin must be actively driven-floating is not recommended. This hardware-level protection prevents accidental overwrites during system operation.

What package type is used for the 24FC02-I/MS?

The 24FC02-I/MS uses an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm lead pitch and 3.0 mm × 3.0 mm body dimensions. This is explicitly listed in the Device Selection Table under "Available Packages" for 24FC02 and confirmed in the Package Marking Information section. The MSOP-8 footprint provides higher density than SOIC-8 while maintaining hand-solderability and compatibility with standard reflow profiles.

Does the 24FC02-I/MS require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC02-I/MS requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. The datasheet specifies typical values of 2 kΩ for 1 MHz operation, 10 kΩ for 100 kHz, and 2 kΩ for 400 kHz. These resistors ensure proper logic high levels and meet rise time requirements (TR ≤ 1000 ns at 1.7–5.5V). Without them, communication will fail due to undefined bus states.

Is the 24FC02-I/MS qualified for automotive applications?

Yes, the 24FC02-I/MS is AEC-Q100 qualified for automotive applications. This is explicitly stated in the Features section of the DS20001709N datasheet and confirmed in the Temperature Ranges row of the Device Selection Table, which lists "I, E" (Industrial and Extended) grades for 24FC02. The "I" grade corresponds to –40°C to +85°C, meeting AEC-Q100 Grade 2 requirements, and the device is manufactured and tested to automotive reliability standards.