Microchip Technology 24FC08-E/MS

Overview

24FC08-E/MS 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, 5 ms max page write time, and extended temperature range (–40°C to +125°C). It delivers low-power operation (1 µA standby, 1 mA read) and hardware write-protection via the WP pin for industrial sensor calibration and embedded configuration storage.

For engineers reviewing the 24FC08-E/MS datasheet, 24FC08-E/MS pinout, 24FC08-E/MS application, or 24FC08-E/MS equivalent, this page provides verified electrical specs, MSOP-8 package details, I²C timing compliance at 1 MHz, endurance (1M cycles), and real-world use cases in automotive subsystems and programmable power supplies.

Technical Context

The 24FC08-E/MS implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes a 16-byte page write buffer, self-timed erase/write cycle, and address pointer logic enabling current-address, random, and sequential reads.

It supports full I²C protocol compliance-including Start/Stop condition generation, ACK polling during write cycles, and 7-bit client addressing with block-select bits (B1/B0)-and integrates hardware write protection that disables all writes when WP = VCC, while preserving read functionality across its entire 000–3FFh memory map.

Key Specifications

Pinout & Package

24FC08-E/MS is supplied in an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed pad option (not electrically connected). Pin 1 is marked by a beveled corner or dot; A0–A2 pins are unconnected and may be left floating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA08-I/MS, the 24FC08-E/MS doubles I²C bandwidth and extends temperature capability; versus AT24C08D-MAHM-T, it adds hardware write protection and higher endurance-critical for automotive and industrial firmware integrity.

Availability

24FC08-E/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive subsystem configuration, and programmable power supply trim requiring stable component supply across extended temperature ranges.

Supply support for 24FC08-E/MS 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 global manufacturing and quality certifications including ISO 9001 and AEC-Q200.

The 24FC08 belongs to Microchip's 24XX08 family of serial EEPROMs designed for robust, low-power, I²C-based nonvolatile storage in automotive, industrial, and medical applications demanding extended temperature operation and high reliability.

FAQ

What is the maximum I²C clock frequency supported by the 24FC08-E/MS?

The 24FC08-E/MS supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V VCC range and –40°C to +125°C temperature range. This is confirmed in Table 1-1 AC Characteristics (Param. No. 1, FCLK) and distinguishes it from the 24AA08 (max 400 kHz) and 24LC08B (max 400 kHz, min VCC 2.5V). The 24FC08-E/MS achieves this with optimized internal timing and slope-controlled outputs.

Does the 24FC08-E/MS have hardware write protection, and how is it implemented?

Yes, the 24FC08-E/MS includes hardware write protection via the WP (Write-Protect) pin. When WP is tied to VCC, all write operations to the entire memory array (addresses 000h–3FFh) are inhibited; read operations remain fully functional. When WP is tied to VSS, normal read/write access is enabled. This feature is documented in Section 2.4 Pin Descriptions and Section 6.3 Write Protection of the DS20001710M datasheet.

What package type does the 24FC08-E/MS use, and what are its key mechanical dimensions?

The 24FC08-E/MS uses an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm lead pitch, 3.0 mm × 3.0 mm body size, and nominal thickness of 1.1 mm. Pin 1 is identified by a beveled corner or dot. The exposed pad is optional and not electrically connected. Full mechanical drawings are specified in Microchip Drawing No. C04-057-SN Rev F, referenced on page 25 of DS20001710M.

How many erase/write cycles can the 24FC08-E/MS endure, and what is its data retention period?

The 24FC08-E/MS guarantees 1,000,000 erase/write cycles at 25°C and 5.5V (page mode), and provides greater than 200 years of data retention under normal operating conditions. These values are specified in Table 1-1 AC Characteristics (Param. No. 18, Endurance) and the Features list on page 1 of DS20001710M. Retention is measured at elevated temperature and extrapolated using industry-standard Arrhenius modeling.

Is the 24FC08-E/MS AEC-Q100 qualified, and for which temperature grade?

Yes, the 24FC08-E/MS is AEC-Q100 qualified for the Extended (E) temperature grade, covering –40°C to +125°C ambient operation. This qualification is explicitly stated in the Features section on page 1 of DS20001710M and confirmed in the Device Selection Table (page 1), where "24FC08" is listed with "Temp. Ranges: I, E" and "Available Packages: MS, P, SN, ST, Q4B, OT".