Microchip Technology 24FC01-E/P

Overview

24FC01-E/P from Microchip Technology Inc. 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 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 calibration storage.

For engineers reviewing the 24FC01-E/P datasheet, 24FC01-E/P pinout, 24FC01-E/P application, or 24FC01-E/P equivalent, this page delivers verified electrical specs, package-confirmed pin functions, real-world use cases, and two validated alternative parts - all aligned to Microchip's DS20001711M specification for the 24FC01 variant.

Technical Context

The 24FC01-E/P implements a 2-wire I²C interface with fixed 7-bit client address (1010xxx) and R/W bit control, supporting standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) modes depending on V_CC. Its internal architecture includes an 8-byte page latch, HV generator for EEPROM programming, and address pointer auto-increment logic for sequential reads.

It operates across two temperature grades: Industrial (–40°C to +85°C) and Extended (–40°C to +125°C), with V_CC range 1.7V–5.5V. Write protection is implemented via dedicated WP pin tied to V_CC, disabling all writes while preserving read functionality - no internal pull-ups or configuration registers required.

Key Specifications

Pinout & Package

24FC01-E/P uses an 8-lead PDIP (Plastic Dual In-Line Package) with 300-mil body width. Pin 1 is top-left corner (A0), pin 8 is top-right (V_CC). A0–A2 are not internally connected and may be left floating or tied to V_SS/V_CC without functional impact.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24FC01-E/P, the 24AA01-I/P trades 1 MHz speed for broader voltage compatibility but sacrifices extended temperature support, while the 24LC01B-I/P imposes stricter 2.5V minimum supply and excludes high-temp operation - making 24FC01-E/P the sole option for 1.7V–5.5V, 1 MHz, and –40°C to +125°C concurrent requirements.

Availability

24FC01-E/P is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 24FC01-E/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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory solutions for embedded control applications.

The 24FC01 belongs to Microchip's 24XX01 family of I²C serial EEPROMs, designed specifically for reliable, low-power nonvolatile storage in automotive, industrial, and medical systems where data integrity and extended temperature operation are critical.

FAQ

What is the maximum I²C clock frequency supported by the 24FC01-E/P?

The 24FC01-E/P supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range, unlike the 24AA01 (400 kHz max) or 24LC01B (400 kHz, min 2.5V). This enables faster configuration writes in time-sensitive applications such as automotive gateway boot sequences. The 24FC01-E/P maintains full AC timing compliance at 1 MHz per DS20001711M Table 1-2.

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

Yes, the 24FC01-E/P requires external pull-up resistors on both SDA and SCL lines because it uses open-drain I/O architecture. For 1 MHz operation, a 2 kΩ pull-up is recommended per Microchip's DS20001711M Section 2.2. Pull-up values scale inversely with bus capacitance and target speed - 10 kΩ is sufficient for 100 kHz, but insufficient for reliable 1 MHz signaling.

How does the WP pin function on the 24FC01-E/P?

The WP (Write-Protect) pin on the 24FC01-E/P is a hardware-level enable: when tied to V_CC, all write operations (byte and page) are inhibited while read operations remain fully functional. When tied to V_SS, full read/write access is granted. This pin requires no software configuration and provides deterministic, glitch-immune protection - essential for safeguarding calibration data in safety-critical systems.

What is the endurance and data retention specification for the 24FC01-E/P?

The 24FC01-E/P guarantees 1,000,000 erase/write cycles and data retention exceeding 200 years at +25°C, as specified in DS20001711M Section 1.0 and Table 1-2. These values are characterized and ensured by Microchip - not estimated or extrapolated - enabling long-life deployment in infrastructure equipment and medical devices where field replacement is impractical.

Is the 24FC01-E/P AEC-Q100 qualified?

Yes, the 24FC01-E/P is explicitly listed as AEC-Q100 qualified in the "Features" section of DS20001711M. This qualification covers stress testing for temperature cycling, humidity bias, and high-temperature operating life - confirming suitability for automotive applications including body electronics, infotainment, and ADAS subsystems where reliability under vibration and thermal shock is mandatory.