Microchip Technology 24FC01-I/P

Overview

24FC01-I/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 at 1.7–5.5 V, and industrial temperature range (–40°C to +85°C). It features 8-byte page write buffer, Schmitt-trigger inputs, and <1 µA standby current - used for firmware parameter storage in embedded controllers.

For engineers reviewing the 24FC01-I/P datasheet, 24FC01-I/P pinout, 24FC01-I/P application, or 24FC01-I/P equivalent, key selection criteria include I²C speed compatibility (1 MHz), low-voltage operation down to 1.7 V, extended temperature capability, and hardware WP pin control for secure configuration retention.

Technical Context

The 24FC01-I/P implements a 2-wire I²C interface with fixed 7-bit device address (1010xxx) and R/W bit control, supporting byte and page write modes. Its internal address pointer auto-increments during sequential reads, enabling full 128-byte memory access without re-addressing.

It uses on-chip high-voltage generation for EEPROM programming, includes slope-controlled outputs to suppress ground bounce, and integrates Schmitt-trigger inputs with 50 ns spike filtering for robust noise immunity on shared I²C buses.

Key Specifications

Pinout & Package

8-Lead PDIP (Plastic Dual In-Line Package), 300 mil body width, through-hole mounting. Pin 1 marked by notch or dot; leads are gull-wing shaped with standard 0.100" pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA01-I/P, the 24FC01-I/P delivers 2.5× higher I²C bandwidth for faster configuration loads, while AT24C01D-SSHM-T offers comparable speed without automotive validation - making 24FC01-I/P optimal for time-critical, certified industrial and automotive deployments.

Availability

24FC01-I/P is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart energy meter firmware requiring stable component supply across long-lifecycle programs.

Supply support for 24FC01-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products with broad industrial and automotive qualification coverage.

The 24FC01-I/P belongs to Microchip's 24XX01 family of serial EEPROMs designed specifically for reliable, low-voltage, I²C-based nonvolatile storage in resource-constrained embedded systems.

FAQ

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

The 24FC01-I/P supports up to 1 MHz I²C clock frequency across its full 1.7 V to 5.5 V supply range. This is confirmed in Table 1-2 of DS20001711M, where FCLK is specified as 1000 kHz for 1.7V ≤ VCC ≤ 5.5V - distinguishing it from the 400 kHz limit of the 24AA01-I/P and 24LC01B-I/P variants. The 24FC01-I/P maintains this speed even at minimum 1.7 V supply.

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

Yes, the 24FC01-I/P requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Per Section 2.2 of DS20001711M, typical values are 2 kΩ for 1 MHz operation. The resistor value must be selected based on bus capacitance and desired rise time to meet AC timing requirements including TR ≤ 1000 ns.

How does the Write-Protect (WP) pin function on the 24FC01-I/P?

On the 24FC01-I/P, the WP pin is a logic-level input: when tied to VCC, the entire 128-byte memory array (addresses 00h–7Fh) is write-protected and only read operations are permitted; when tied to VSS, full read/write access is enabled. This hardware lock operates independently of I²C commands and provides tamper resistance without software overhead.

What is the endurance rating of the 24FC01-I/P, and under what conditions is it specified?

The 24FC01-I/P is rated for 1,000,000 erase/write cycles, as stated in Table 1-2 Note 4 of DS20001711M. This endurance is specified at 25°C and 5.5 V supply using page-mode writes. The device maintains robustness across its full industrial temperature range (–40°C to +85°C), with actual field endurance typically exceeding specification due to wear-leveling effects in small-memory devices.

Is the 24FC01-I/P AEC-Q100 qualified, and which grade applies to this part number?

Yes, the 24FC01-I/P is AEC-Q100 qualified per the "Automotive AEC-Q100 Qualified" feature listed in the Device Selection Table of DS20001711M. The "I" suffix in 24FC01-I/P denotes Industrial temperature grade (–40°C to +85°C), which aligns with AEC-Q100 Grade 2 requirements - validated for automotive under-hood and cabin applications.