STMicroelectronics M24C04-FMN6TP

Summary of the M24C04-FMN6TP Series Products

The STMicroelectronics M24C04-FMN6TP is a 4-Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) designed for use in systems requiring non-volatile data storage with reliable serial communication. Organized as 512 × 8 bits, the M24C04 family is compatible with industry-standard I²C protocols and is offered in several package variants, including SO8N, TSSOP8, UFDFPN8, and UFDFPN5, optimizing board space for a wide range of application needs. The series comprises wide voltage options—M24C04-W (2.5V to 5.5V), M24C04-R (1.8V to 5.5V), and M24C04-F (1.7V to 5.5V)—supporting diverse power rails and environmental conditions commonly found in industrial, consumer, and automotive electronics.

Key Functions and Unique Selling Points of M24C04-FMN6TP

At the heart of the M24C04-FMN6TP is robust data integrity and flexibility in communication. The device operates at clock frequencies of up to 400 kHz (Fast-mode I²C), and supports both 400 kHz and 100 kHz I²C bus operations. Featuring a 16-byte page size for efficient batch writes and fast single byte and page write operations (typically under 5 ms), the EEPROM streamlines firmware and configuration data uploads during production or field updates.

Key protection features include a write-protect pin capable of disabling all write operations, ensuring firmware integrity against accidental overwrites—a necessity for certain medical or safety-critical equipment. The EEPROM further boasts over 4 million write cycles per memory cell, guaranteeing longevity across repeated updates, with 200 years data retention to secure calibration, identification or configuration records throughout the device’s lifecycle. Enhanced ESD and latch-up protections reinforce suitability for demanding industrial installations.

Signal Characteristics and Functional Operation of M24C04-FMN6TP

The M24C04-FMN6TP interfaces via standard I²C bus lines: Serial Data (SDA) and Serial Clock (SCL). The SDA is a bidirectional open-drain line requiring a user-supplied pull-up resistor, customizable according to bus capacitance and speed. Chip enable lines E1 and E2 allow hardware addressing for multi-device bus arrangements, although packages such as UFDFPN5 fix these bits to prevent misaddressing.

Write operations are controlled by the WC (Write Control) pin; when driven high, the entire memory array is write-protected. During write cycles, the bus master can poll for device readiness via the acknowledge bit (ACK), expediting firmware update sequences in automated systems by minimizing idle wait intervals.

Memory Structure and Access Techniques in M24C04-FMN6TP

Memory in the M24C04-FMN6TP is organized into pages for batch writing (up to 16 bytes), enhancing throughput over byte-wise updates. Addressing is achieved by transmitting the memory location after the device select code. The device supports random address read (requiring a dummy write for address setup), current address read (using the internal address counter), and sequential read (auto-incrementing address for buffer dumps). This scheme allows engineers to efficiently access configurations or sensor logs without complex external logic.

Designers should note that after the last memory address in some packages (such as DFN5), the address counter behavior changes and the output data may become undefined—a consideration for cyclic logging applications.

Power Efficiency and Durability of M24C04-FMN6TP

Reliable power-up and power-down routines are essential for EEPROM data integrity. The M24C04-FMN6TP employs an internal Power-On-Reset (POR) to inhibit all operations until the supply voltage stabilizes above threshold, protecting against unintended writes or corrupted reads during voltage transients. A recommended decoupling capacitor (10nF—100nF) should be placed near the device’s VCC/VSS pins to ensure supply stability.

For power-down, the device reacts by entering standby mode once voltage drops below operating limits, and ceases responding to bus commands below the POR threshold. These features, alongside RoHS-compliant and halogen-free packaging, support high-reliability and environmentally-conscious applications.

Comprehensive Packaging Choices for M24C04-FMN6TP

To cater to varied layout constraints, the M24C04-FMN6TP is available in several package formats:

SO8N (8-lead, 4.9 x 6mm)

TSSOP8 (8-lead, 3 x 6.4mm, thin shrink)

UFDFPN8 (8-lead, 2 x 3mm, ultra thin profile)

UFDFPN5 (5-lead, 1.7 x 1.4mm, ultra thin fine pitch)

Recommended footprint dimensions and mechanical outlines are provided by STMicroelectronics to facilitate precision PCB design with reliable solderability. Package selection should consider board space, thermal profile, and assembly processes.

Environmental Standards and Operating Conditions for M24C04-FMN6TP

All M24C04-FMN6TP package options are RoHS-compliant and halogen-free, meeting industry standards for hazardous substance restrictions. The operating temperature range is -40°C to +85°C, supporting use in both standard and industrial settings.

Absolute maximum ratings must be observed to avoid permanent damage; exceeding recommended VCC, temperature, or handling voltage may compromise reliability. Advanced ESD and latch-up protection mechanisms withstand harsh environments and assembly practices.

Comparable or Substitute Models for M24C04-FMN6TP

When selecting or replacing the M24C04-FMN6TP, engineers may also evaluate adjacent models in the M24C04 series:

M24C04-W: Recommended for standard voltage operation (2.5V–5.5V)

M24C04-R: Suitable for lower voltage rails (1.8V–5.5V)

M24C04-F: Supports extended low-voltage operation (down to 1.7V across full temperature range, 1.6V with constraints)

These offer comparable firmware architectures and package options but differ primarily in voltage compatibility, which should be matched to system requirements for reliable performance.

Conclusion

The STMicroelectronics M24C04-FMN6TP 4-Kbit EEPROM delivers reliable, flexible non-volatile memory for systems utilizing the I²C interface. Its combination of robust endurance, flexible voltage options, multiple package formats, and deep environmental protections make it a preferred choice for engineers requiring secure storage of configurations, calibration data, or operational logs in embedded designs. Careful consideration of voltage range, package selection, and equivalent models can further optimize performance and longevity in critical applications.