Microchip Technology 24FC16-I/P

Overview

24FC16-I/P from Microchip Technology Inc. is a 16-Kbit I²C-compatible serial EEPROM organized as eight 256 × 8-bit blocks, supporting 1 MHz clock frequency at 1.7–5.5V supply, with hardware write-protection, 16-byte page write buffer, and industrial temperature range (−40°C to +85°C). It serves as nonvolatile configuration storage in embedded controllers, sensor nodes, and power management systems.

For engineers reviewing the 24FC16-I/P datasheet, 24FC16-I/P pinout, 24FC16-I/P application, or 24FC16-I/P equivalent, this page delivers verified electrical specs, package mapping, I²C timing constraints, endurance data (1M cycles), and real-world use context for rapid BOM validation and design-in.

Technical Context

The 24FC16-I/P implements a two-wire I²C slave interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes an 8-bit address pointer, 16-byte page latches, and HV generator for EEPROM programming - enabling self-timed erase/write cycles without external high-voltage sources.

It supports three read modes (current address, random, sequential) and two write modes (byte and page), with ACK polling for write-cycle completion detection. The WP pin provides hardware-level write protection across the full 000–7FF address space when tied to VCC, while A0–A2 pins are unconnected and may be left floating.

Key Specifications

Pinout & Package

24FC16-I/P uses an 8-lead PDIP (Plastic Dual In-Line Package) with 300-mil body width. Pin 1 is index-marked; leads are gull-wing shaped with 0.100" pitch. Exposed pad is not present in PDIP variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA16-I/P, the 24FC16-I/P delivers 2.5× higher I²C bandwidth for time-critical writes, while AT24C16C-PU offers alternate supply-chain resilience without automotive qualification - making 24FC16-I/P the optimal choice for performance- and reliability-constrained automotive and industrial designs.

Availability

24FC16-I/P is available at Aetrix Electronics and suitable for smart metering, industrial PLC modules, and automotive body control applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for 24FC16-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 leading provider of microcontrollers, analog components, and memory solutions, headquartered in Chandler, Arizona.

The 24FC16 belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power, I²C-based nonvolatile storage in automotive, industrial, and consumer systems demanding high endurance and extended data retention.

FAQ

What is the maximum I²C clock frequency supported by the 24FC16-I/P?

The 24FC16-I/P supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range, unlike the 24AA16-I/P (400 kHz) or 24LC16B-I/P (400 kHz). This higher speed enables faster configuration loading and firmware patching in time-sensitive applications. The 24FC16-I/P maintains full AC timing compliance at 1 MHz, including THIGH ≤260 ns and TLOW ≥500 ns, as specified in DS20001703M-page 4.

Does the 24FC16-I/P require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC16-I/P requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. For 1 MHz operation, a 2 kΩ pull-up to VCC is recommended per Microchip's datasheet guidance. Incorrect pull-up values cause timing violations - too weak causes slow rise times exceeding TR ≤1000 ns; too strong increases power consumption and risks bus contention.

How does hardware write-protection work on the 24FC16-I/P?

Hardware write-protection on the 24FC16-I/P is controlled by the WP pin: when tied to VCC, all write operations (byte and page) to the full 000–7FF memory space are inhibited, while read operations remain fully functional. This is a physical gate-level lock - no software command can override it. Leaving WP floating or tying to VSS enables normal read/write access, making it ideal for factory-programmed configurations that must survive field updates.

What is the endurance rating of the 24FC16-I/P and how is it validated?

The 24FC16-I/P is rated for 1,000,000 erase/write cycles at 25°C and 5.5V under page-mode conditions, as confirmed in DS20001703M-page 5, Table 1-2, Parameter 18. This endurance is characterized - not 100% tested - but ensured through process monitoring and accelerated life testing. Real-world endurance scales with voltage/temperature per Microchip's Total Endurance™ Model, available on their website.

Is the 24FC16-I/P AEC-Q100 qualified and what grade does it meet?

Yes, the 24FC16-I/P is AEC-Q100 qualified for automotive applications. Per DS20001703M-page 1, it meets Grade 3 (−40°C to +85°C) requirements, matching its industrial temperature rating. This qualification covers stress tests including HTOL, TC, UHAST, and ESD (>4 kV), confirming suitability for body electronics, infotainment, and ADAS subsystems where reliability under thermal cycling and electrical noise is mandatory.