Microchip Technology 24FC01-I/SN

Overview

24FC01-I/SN from Microchip Technology is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory with hardware write-protection, 1 MHz clock support (down to 1.7V), and 8-byte page write buffer. It operates across -40°C to +85°C industrial temperature range in an 8-lead SOIC package and is used for configuration storage in embedded controllers and power management systems.

For engineers reviewing the 24FC01-I/SN datasheet, 24FC01-I/SN pinout, 24FC01-I/SN application, or 24FC01-I/SN equivalent, this page delivers verified electrical specs, SOIC pin mapping, I²C timing compliance at 1 MHz, endurance (1M cycles), and real-world use cases - all confirmed against Microchip DS20001711M.

Technical Context

The 24FC01-I/SN implements a 2-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.

Write protection is managed via the dedicated WP pin: tied to VSS for full read/write access, or VCC to lock the entire 00h–7Fh memory array. Acknowledge polling allows host firmware to detect write completion without fixed delays, improving bus utilization in time-critical systems.

Key Specifications

Pinout & Package

24FC01-I/SN uses an 8-lead SOIC (Small Outline Integrated Circuit) package with 150 mil body width, JEDEC MS-012AC compliant footprint, and matte tin (Sn) lead finish. Pin 1 is marked by a beveled corner or notch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA01-I/SN, the 24FC01-I/SN delivers 2.5× faster I²C throughput and guaranteed 1 MHz operation down to 1.7V, while AT24C01D-SSHM-T trades automotive/industrial qualification for broader distributor availability - making 24FC01-I/SN optimal for performance-critical embedded control.

Availability

24FC01-I/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, smart power supplies, medical diagnostic devices, and automotive body control modules requiring stable component supply, long-term obsolescence planning, and RoHS-compliant sourcing.

Supply support for 24FC01-I/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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24FC01 belongs to Microchip's 24XX01 family of I²C serial EEPROMs, designed specifically for reliable, low-power nonvolatile storage in space-constrained embedded systems where voltage flexibility and noise immunity are critical.

FAQ

What is the maximum I²C clock frequency supported by the 24FC01-I/SN?

The 24FC01-I/SN supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range, as specified in Table 1-2 of DS20001711M. This exceeds the 400 kHz limit of the 24AA01/24LC01B variants and enables faster configuration loading in time-sensitive applications. The 24FC01-I/SN maintains full AC timing compliance including THIGH (260 ns min) and TLOW (500 ns min) at 1 MHz.

Does the 24FC01-I/SN require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC01-I/SN requires external pull-up resistors on both SDA and SCL because these pins are open-drain. For 1 MHz operation, Microchip recommends a 2 kΩ pull-up to VCC (DS20001711M, Section 2.2). Incorrect resistor values cause timing violations or bus lockup; 10 kΩ is acceptable only for 100 kHz mode.

How does the WP pin function on the 24FC01-I/SN?

The WP (Write-Protect) pin on the 24FC01-I/SN is a logic-level input: tying it to VSS enables full read/write access to the entire 00h–7Fh memory array, while tying it to VCC disables all write operations (including byte and page writes) while preserving read functionality. This hardware lock prevents accidental overwrites during power transitions or firmware errors.

Is the 24FC01-I/SN AEC-Q100 qualified?

Yes, the 24FC01-I/SN is explicitly listed as "Automotive AEC-Q100 Qualified" in the Features section of DS20001711M. This qualification covers the industrial temperature grade (I: -40°C to +85°C) and confirms reliability testing per AEC-Q100 Rev-H stress requirements, making it suitable for automotive body electronics and infotainment systems.

What is the endurance and data retention specification for the 24FC01-I/SN?

The 24FC01-I/SN guarantees 1,000,000 erase/write cycles and 200 years of data retention at 25°C, as documented in Table 1-2 (Param. No. 18) and Features list of DS20001711M. These values are measured under standard conditions (5.5V, 25°C) and represent minimum guaranteed performance - actual field lifetime typically exceeds specifications under typical operating voltages and temperatures.