STMicroelectronics M24C16-DFCU6TP/K

Overview

M24C16-DFCU6TP/K from STMicroelectronics is a 16-Kbit I²C-compatible serial EEPROM in a 4-ball WLCSP (Wafer-Level Chip Scale Package), operating across 1.6 V–5.5 V supply, supporting up to 1 MHz I²C bus speed, with 128 × 16-byte pages plus a dedicated 16-byte lockable identification page, and embedded ECC for single-bit error correction-used for secure parameter storage in space-constrained IoT sensor nodes and wearable health monitors.

For engineers reviewing the M24C16-DFCU6TP/K datasheet, M24C16-DFCU6TP/K pinout, M24C16-DFCU6TP/K application, or M24C16-DFCU6TP/K equivalent, key selection considerations include its ultra-thin WLCSP footprint, 4-million write endurance at 25°C, 200-year data retention, Schmitt-triggered SDA/SCL inputs for noise immunity, and dual-mode addressing for memory vs. identification page access.

Technical Context

The M24C16-DFCU6TP/K implements a true EEPROM array organized as 128 pages of 16 bytes each, with an additional 16-byte identification page that supports permanent read-only locking via a dedicated instruction. Its internal ECC logic corrects single-bit errors transparently during read operations.

It operates strictly as an I²C slave device with fixed 7-bit address prefix (1010b for memory, 1011b for ID page), supports byte/page/ID-page write modes, and uses a power-on-reset circuit to prevent spurious writes during voltage ramp-up; SDA is open-drain with required external pull-up, and SCL is CMOS-compatible input with Schmitt trigger.

Key Specifications

Pinout & Package

Package: RoHS-compliant, halogen-free 4-ball WLCSP (ECOPACK2®), 0.4 mm pitch, 1.19 mm × 1.19 mm footprint, 0.37 mm max height - optimized for ultra-thin wearables and miniaturized modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C16D-SSHM-T, the M24C16-DFCU6TP/K delivers superior miniaturization and data integrity via ECC and ID page lock, while M95160-DFMN6TP/K trades I²C compatibility for SPI speed and density - neither offers identical feature parity for space-constrained, security-aware I²C systems.

Availability

M24C16-DFCU6TP/K is available at Aetrix Electronics and suitable for medical wearables, automotive cabin sensors, and industrial edge controllers requiring stable component supply, guaranteed traceability, and long-lifecycle support.

Supply support for M24C16-DFCU6TP/K 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, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.

The M24Cxx series targets ultra-compact, high-reliability non-volatile storage in resource-constrained embedded systems - emphasizing low-voltage operation, robust packaging, and integrated data integrity features like ECC and secure ID pages.

FAQ

What is the function of the identification page, and how is it locked?

The identification page is a dedicated 16-byte memory region used to store sensitive parameters like calibration data or cryptographic keys. It is locked permanently to read-only mode using the Lock Identification Page instruction, which requires a specific device address (1011b prefix, A7 = 1) and a data byte matching pattern xxxx xx1x. Once locked, writes to this page are ignored and acknowledged only if unlocked.

Does the M24C16-DFCU6TP/K require external pull-up resistors on SDA and SCL?

Yes - SDA is an open-drain output and must be pulled up to VCC with an external resistor; SCL is an input but also benefits from a pull-up for noise margin. Recommended values range from 1.8 kΩ to 10 kΩ depending on bus capacitance and I²C speed; ST's AN2841 provides calculation guidance based on rise-time requirements for 1 MHz operation.

How does the embedded ECC improve system reliability?

The ECC logic performs single-bit error correction on every byte read from the main memory array - detecting and correcting flipped bits caused by radiation, aging, or voltage droop. This occurs transparently during normal I²C reads, eliminating silent data corruption without software overhead or external checksum validation, critical for calibration-critical applications.

Can the M24C16-DFCU6TP/K operate reliably at 1.6 V supply?

Yes, but with temperature limitations: at 1.6 V, read operations are guaranteed from −40°C to +85°C, while write operations are specified only from 0°C to +85°C. For full −40°C write capability, VCC must be ≥1.7 V. This reflects charge-pump limitations in the internal write circuitry at lowest voltage corners.