Microchip Technology 24FC08-I/SN

Overview

24FC08-I/SN from Microchip Technology Inc. is an 8-Kbit I²C-compatible serial EEPROM organized as four 256 × 8-bit blocks, operating from 1.7V to 5.5V with 1 MHz clock support, 16-byte page write buffer, and hardware write-protect via WP pin - deployed in industrial sensor calibration, embedded configuration storage, and power-management parameter retention.

For engineers reviewing the 24FC08-I/SN datasheet, 24FC08-I/SN pinout, 24FC08-I/SN application, or 24FC08-I/SN equivalent, key selection criteria include extended temperature operation (–40°C to +125°C), fast 1 MHz I²C timing at full V_CC range, low 1 µA standby current, and SOIC-8 (SN) package compatibility with legacy PCB footprints.

Technical Context

The 24FC08-I/SN implements a two-wire I²C interface with Schmitt-trigger inputs and slew-rate-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer supports current-address, random, and sequential read modes, while the 16-byte page buffer enables efficient burst writes without host-side buffering.

Write protection is implemented via the dedicated WP pin: tied to V_SS, full read/write access is enabled; tied to V_CC, the entire 8-Kbit array (addresses 000–3FF_H) is write-inhibited. The device uses self-timed erase/write cycles with no external timing components required.

Key Specifications

Pinout & Package

24FC08-I/SN is packaged in an 8-lead narrow SOIC (SN) per Microchip drawing C04-057-SN Rev F, with 1.27 mm pitch, 3.90 mm body width, and gull-wing leads. The exposed pad is not present in this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA08-I/SN, the 24FC08-I/SN delivers 2.5× faster I²C throughput and extended temperature support, while AT24C08D-SSHM-T offers alternate sourcing but lacks AEC-Q100 qualification and high-temp reliability data.

Availability

24FC08-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded configuration storage, and automotive body control module applications requiring stable component supply across long product lifecycles.

Supply support for 24FC08-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products for embedded control applications.

The 24FC08-I/SN belongs to Microchip's 24XX08 family of I²C EEPROMs, designed specifically for robust, low-power nonvolatile storage in space-constrained industrial and automotive systems requiring extended temperature operation and high reliability.

FAQ

What is the maximum I²C clock frequency supported by the 24FC08-I/SN?

The 24FC08-I/SN supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range. This is confirmed in the Device Selection Table and AC Characteristics section of DS20001710M, distinguishing it from the 24AA08 (400 kHz max) and 24LC08B (400 kHz, 2.5V min). The 24FC08-I/SN maintains this speed even at 1.7V, enabling faster configuration loads in battery-powered systems.

Does the 24FC08-I/SN support hardware write protection, and how is it implemented?

Yes, the 24FC08-I/SN implements hardware write protection via the WP pin. When WP is tied to V_CC, the entire 8-Kbit memory array (addresses 000–3FF_H) is write-inhibited; read operations remain fully functional. When WP is tied to V_SS, normal read/write access is enabled. This feature is active in the SOIC-8 (SN) package and is documented in Section 2.4 and Figure 6-3 of DS20001710M.

What is the endurance rating and data retention specification for the 24FC08-I/SN?

The 24FC08-I/SN is rated for more than 1 million erase/write cycles and guarantees data retention exceeding 200 years at 25°C. These values are specified in the Features list and Table 1-1 (Endurance) of DS20001710M. Endurance is characterized at 25°C and 5.5V using page-mode writes, making it suitable for infrequent but mission-critical parameter updates in industrial equipment.

Which packages are available for the 24FC08-I/SN, and what does the 'SN' suffix indicate?

The 'SN' suffix in 24FC08-I/SN denotes the 8-lead narrow SOIC package per Microchip drawing C04-057-SN Rev F. Per the Device Selection Table, 24FC08 is offered in MSOP, PDIP, SOIC (SN), TSSOP, and 4-Ball CSP. The SN variant features 1.27 mm lead pitch, 3.90 mm body width, and gull-wing leads - compatible with standard SOIC-8 PCB footprints and reflow processes.

Is the 24FC08-I/SN qualified for automotive applications, and what certifications does it hold?

Yes, the 24FC08-I/SN is explicitly listed as "Automotive AEC-Q100 Qualified" in the Features section of DS20001710M. It operates across the Extended temperature range (–40°C to +125°C) and meets AEC-Q100 stress test requirements for Grade 1 devices. This qualification is validated per the full AEC-Q100-001 through -011 test suite, supporting use in body control modules and under-hood sensors.