Microchip Technology 24FC02-E/SN

Overview

24FC02-E/SN 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), and extended temperature operation from –40°C to +125°C. It features 8-byte page write buffering, Schmitt-trigger inputs, slope-controlled outputs, and >1 million erase/write cycles - deployed in automotive body control modules for storing calibration data and configuration parameters.

For engineers reviewing the 24FC02-E/SN datasheet, 24FC02-E/SN pinout, 24FC02-E/SN application, or 24FC02-E/SN equivalent, key selection criteria include its 1.7V–5.5V supply range, E-temp grade qualification, SOIC-8 package compatibility, and I²C timing compliance at 1 MHz under extended temperature conditions.

Technical Context

The 24FC02-E/SN implements a two-wire I²C interface with fixed 7-bit client address (1010xxx) and no internal A0–A2 decoding logic - all three address pins are unconnected. Its internal architecture includes an on-chip HV generator, page latches, and EEPROM array with self-timed write cycles.

It supports byte and page write modes (max 8 bytes per page), uses acknowledge polling for write-cycle completion detection, and incorporates input filtering (50 ns spike suppression) and output slew-rate control to suppress ground bounce and bus noise - critical for robust operation in electrically noisy automotive environments.

Key Specifications

Pinout & Package

24FC02-E/SN is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package with standard 150-mil body width and gull-wing leads. Pin 1 is marked by a beveled corner or notch; the package is RoHS-compliant and rated for surface-mount reflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA02-I/SN, the 24FC02-E/SN delivers higher-speed I²C operation and automotive qualification; versus AT24C02D-SSHM-T, it shares identical electrical behavior but originates from Microchip's legacy 24XX02 family with distinct traceability and packaging markings.

Availability

24FC02-E/SN is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and medical instrumentation requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant nonvolatile memory.

Supply support for 24FC02-E/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 for embedded and automotive markets.

The 24FC02 belongs to Microchip's 24XX02 family of I²C EEPROMs designed specifically for space-constrained, low-power, and high-reliability applications requiring guaranteed data retention and extended temperature operation.

FAQ

What is the maximum I²C clock frequency supported by the 24FC02-E/SN?

The 24FC02-E/SN supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range and –40°C to +125°C operating temperature. This is confirmed in Table 1-2 of DS20001709N, where FCLK = 1000 kHz is specified for 24FC02 under extended temperature conditions. The 24FC02-E/SN achieves this performance without requiring elevated VCC - unlike 24LC02B, which is limited to 400 kHz below 2.5V.

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

Yes, the 24FC02-E/SN requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. Typical values are 2 kΩ for 1 MHz operation (as noted in Section 2.2), though actual resistance depends on bus capacitance and rise-time requirements. The 24FC02-E/SN's Schmitt-trigger inputs tolerate slow-rising edges, but proper pull-ups remain essential for I²C bus compliance.

How is write protection implemented on the 24FC02-E/SN?

Write protection on the 24FC02-E/SN is controlled by the WP pin: when tied to VCC, the entire memory array (addresses 00h–FFh) is locked against write operations while reads remain fully functional. When WP is tied to VSS, full read/write access is enabled. No software command or internal register controls this function - it is purely hardware-based and active immediately upon power-up.

Can the 24FC02-E/SN be used in place of the 24LC02B in an existing design?

The 24FC02-E/SN can replace the 24LC02B in most designs due to identical pinout, memory organization, and I²C protocol, but caution is required: the 24FC02-E/SN supports 1 MHz operation down to 1.7V, whereas the 24LC02B is limited to 400 kHz below 2.5V. Also, verify that WP pin logic and standby current (3 µA at E-temp) meet system requirements - the 24FC02-E/SN draws slightly more current than the 24LC02B in extended temperature mode.

What package type does the 24FC02-E/SN use, and is it RoHS-compliant?

The 24FC02-E/SN uses an 8-lead SOIC (Small Outline Integrated Circuit) package with 150-mil body width, designated by the "SN" suffix per Microchip's packaging table. It is RoHS-compliant, lead-free, and qualified for Pb-free reflow soldering per JEDEC J-STD-020. The package marking includes "24FC02" and date code, consistent with Microchip's standard OTP labeling.