STMicroelectronics M24C04-FDW6TP

Overview

M24C04-FDW6TP from STMicroelectronics is a 4-Kbit I²C-compatible serial EEPROM organized as 512 × 8 bits, operating at up to 400 kHz clock frequency with 1.7 V to 5.5 V supply voltage (full temperature range) or 1.6 V to 5.5 V under restricted conditions. It features 16-byte page write, hardware write protection via WC pin, and -40 °C to +85 °C operation - deployed in industrial control modules for parameter storage and calibration data retention.

For engineers reviewing the M24C04-FDW6TP datasheet, M24C04-FDW6TP pinout, M24C04-FDW6TP application, or M24C04-FDW6TP equivalent, this device supports byte/page write with ≤5 ms internal cycle time, random/sequential read modes, enhanced ESD/latch-up protection, and >4 million write cycles - critical for firmware configuration storage in space-constrained embedded systems requiring long-term data integrity.

Technical Context

The M24C04-FDW6TP implements a standard I²C slave protocol with 7-bit device address (1010xxxA8), where E1/E2 pins configure the two MSBs of the address - though these pins are unconnected in the UFDFPN5 package, fixing address bits b3–b2 to 00. It uses an internal high-voltage generator and sequencer for EEPROM programming, with automatic address incrementing and page-boundary roll-over during page writes.

Write control (WC) is a dedicated active-high input that disables all write operations when asserted, while SDA operates as an open-drain bidirectional bus line requiring external pull-up. The device includes a power-on-reset circuit ensuring no spurious writes during VCC ramp-up, and supports ACK polling to detect write completion without fixed timing delays.

Key Specifications

Pinout & Package

Package: UFDFPN5 (1.7 mm × 1.4 mm, ECOPACK2, RoHS-compliant and halogen-free), with exposed pad not connected internally. Pin 1 marked by dot; pin numbering follows top-view marking-side orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C04D-SSHM-T and BR24G04NUX-5TR, the M24C04-FDW6TP uniquely combines hardware write protection, 4-million-cycle endurance, and 200-year data retention in a 1.7×1.4 mm package - making it optimal for industrial and automotive applications demanding long-term reliability without software mitigation.

Availability

M24C04-FDW6TP is available at Aetrix Electronics and suitable for industrial PLCs, smart sensor modules, IoT edge gateways, and automotive body control units requiring stable component supply, extended temperature operation, and guaranteed long-term data integrity.

Supply support for M24C04-FDW6TP 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.

The M24C04 series belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, I²C-based nonvolatile storage in space-constrained embedded systems where reliability and long-term data retention are critical.

FAQ

What is the function of the WC pin on M24C04-FDW6TP?

The WC (Write Control) pin is an active-high input that disables all write operations to the entire memory array when driven high. When WC is low or floating, writes are enabled. This hardware-level protection prevents accidental or spurious writes during power-up, brownouts, or firmware crashes - eliminating reliance on software locks alone.

Does M24C04-FDW6TP support I²C clock stretching?

No, the M24C04-FDW6TP does not support clock stretching. As a standard I²C slave EEPROM, it relies on internal timing for write cycles (≤5 ms) and responds with ACK/NACK within defined AC timing limits. Bus masters must implement ACK polling or fixed delay waits to detect write completion instead of stretching SCL.

Can M24C04-FDW6TP be used with 1.6 V supply in automotive applications?

The 1.6 V minimum supply is only valid under restricted temperature conditions (e.g., TA ≥ 0 °C for write operations), per DS9387 Rev 6 Table 7. For full -40 °C to +85 °C automotive use, the guaranteed operating range is 1.7 V to 5.5 V. Using 1.6 V outside specified thermal constraints risks write failure or data corruption.

How does the UFDFPN5 package affect I²C address configuration?

In the UFDFPN5 package, E1 and E2 pins are not connected - forcing the two most significant address bits (b3, b2) to 00. This fixes the device select code to 101000xx, meaning only one M24C04-FDW6TP can occupy the 1010xxxx address block on a given I²C bus unless external multiplexing is used.