Microchip Technology 24FC04HT-E/SN

Overview

24FC04HT-E/SN from Microchip Technology Inc. is a 4-Kbit I²C-compatible serial EEPROM organized as two 256 × 8-bit blocks, supporting 1 MHz clock operation down to 1.7V supply, with 16-byte page write buffer, hardware half-array write-protection (100h–1FFh), and AEC-Q100 qualification for automotive applications.

For engineers reviewing the 24FC04HT-E/SN datasheet, 24FC04HT-E/SN pinout, 24FC04HT-E/SN application, or 24FC04HT-E/SN equivalent, this page delivers verified electrical specs, SOIC-8 package details, I²C timing compliance at 1 MHz, endurance (1M cycles), and data retention (>200 years) - all confirmed for the exact E-temp (–40°C to +125°C) variant in SN package.

Technical Context

The 24FC04HT-E/SN implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address counter 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 WP pin: tied to VCC, it disables writes to addresses 100h–1FFh (half-array); tied to VSS, full-array access is enabled. Acknowledge polling allows host firmware to detect write completion without fixed delays, optimizing bus throughput during page writes.

Key Specifications

Pinout & Package

24FC04HT-E/SN is supplied in an 8-lead narrow SOIC package (SN), 3.90 mm body width, with standard JEDEC MS-012AC footprint. Pin 1 is marked by a beveled corner or dot; device orientation follows industry-standard SOIC conventions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA04HT-I/SN and AT24C04D-SSHM-T, the 24FC04HT-E/SN uniquely combines 1 MHz speed, –40°C to +125°C operation, and AEC-Q100 qualification in a drop-in SOIC-8 package - making it the only choice for production automotive modules requiring both performance and compliance.

Availability

24FC04HT-E/SN is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and medical device calibration storage requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.

Supply support for 24FC04HT-E/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 leading provider of microcontrollers, analog, and memory solutions, serving automotive, industrial, and consumer markets with vertically integrated design and manufacturing capabilities.

The 24FC04H family was designed specifically for automotive and extended-temperature applications requiring high-speed I²C communication, robust data integrity, and long-term reliability in harsh environments.

FAQ

What is the maximum I²C clock frequency supported by the 24FC04HT-E/SN?

The 24FC04HT-E/SN supports up to 1 MHz I²C clock frequency across its full 1.7V–5.5V supply range. This is confirmed in Table 1-2 of DS20002119C, where FCLK is specified as 1000 kHz for 24FC04H at VCC ≥ 1.7V. The 24FC04HT-E/SN achieves twice the bandwidth of 400 kHz EEPROMs, enabling faster firmware parameter loading in time-critical automotive ECUs.

Does the 24FC04HT-E/SN require external pull-up resistors on SDA and SCL lines?

Yes, the 24FC04HT-E/SN requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. For 1 MHz operation, a 2 kΩ pull-up to VCC is recommended per Microchip's AC characteristics table and application guidance. Incorrect pull-up values can cause timing violations or bus lockup.

How does the WP pin function on the 24FC04HT-E/SN?

On the 24FC04HT-E/SN, the WP pin provides hardware write protection: when tied to VCC, writes to memory addresses 100h–1FFh (half-array) are inhibited while reads remain fully functional; when tied to VSS, full-array write access is enabled. This behavior is explicitly defined in Section 2.4 and Figure 6-3 of DS20002119C.

Is the 24FC04HT-E/SN AEC-Q100 qualified, and what grade does it meet?

Yes, the 24FC04HT-E/SN is AEC-Q100 qualified per the "Automotive AEC-Q100 Qualified" feature listed in the datasheet front page and confirmed in the Device Selection Table. It meets Grade 1 requirements (–40°C to +125°C), validated for automotive powertrain and body electronics applications per DS20002119C revision C.

What is the endurance and data retention specification for the 24FC04HT-E/SN?

The 24FC04HT-E/SN guarantees 1,000,000 erase/write cycles and greater than 200 years of data retention at 25°C, as stated in Table 1-1 (DC Characteristics) and Table 1-2 (AC Characteristics) of DS20002119C. These values are measured and characterized - not estimated - and apply to the exact 24FC04H part number under specified test conditions.