STMicroelectronics M24C02-FMN6P

Overview

M24C02-FMN6P from STMicroelectronics is a 2-Kbit (256-byte) I²C-compatible serial EEPROM organized as 256 × 8 bits, operating as a slave device on standard and fast-mode I²C buses (up to 400 kHz), with 1.7 V to 5.5 V supply range over –40 °C to +85 °C, 16-byte page size, and hardware write protection via WC pin - used for configuration storage in industrial sensors and embedded power management systems.

For engineers reviewing the M24C02-FMN6P datasheet, M24C02-FMN6P pinout, M24C02-FMN6P application, or M24C02-FMN6P equivalent, key selection considerations include its extended low-voltage operation (1.7 V min), DFN8 ECOPACK2 package footprint, I²C address flexibility via E0–E2 pins, and hardware write control for robust firmware parameter protection.

Technical Context

The M24C02-F implements a synchronous I²C slave interface with start/stop detection, ACK/NACK handshaking, and internal address counter auto-increment. Its memory array uses floating-gate EEPROM technology with charge-pump-based programming, enabling byte- and page-write operations within ≤5 ms.

It integrates a power-on reset (POR) circuit that prevents spurious writes during power ramp-up, and supports random/sequential read modes with automatic address roll-over (except in DFN5 package). The WC pin provides hardware-level write inhibition independent of I²C command flow.

Key Specifications

Pinout & Package

Package: UFDFPN8 (ECOPACK2), 2 mm × 3 mm, 0.5 mm pitch, RoHS-compliant and halogen-free - optimized for space-constrained industrial PCBs and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C02C and BR24G02NUX, the M24C02-FMN6P uniquely combines 400 kHz I²C speed, 1.7 V operation, and dedicated WC pin - making it optimal for safety-critical, low-voltage, and high-throughput configuration storage where deterministic write control is mandatory.

Availability

M24C02-FMN6P is available at Aetrix Electronics and suitable for industrial sensor calibration, smart energy metering, and embedded power management requiring stable component supply across extended temperature and voltage ranges.

Supply support for M24C02-FMN6P 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 M24C02-F belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, and space-constrained nonvolatile storage in harsh industrial environments with wide supply voltage tolerance.

FAQ

What is the function of the WC pin on M24C02-FMN6P?

The WC (Write Control) pin is an active-high hardware enable that globally disables all write operations to the EEPROM array. When driven high, the device acknowledges device select and address bytes but rejects data bytes with NACK - preventing accidental writes during power transitions or firmware errors. It operates independently of I²C commands and requires no software configuration.

Can M24C02-FMN6P operate at 1.6 V?

Yes - M24C02-FMN6P supports 1.6 V operation, but only under restricted temperature conditions: write operations require ambient temperature ≥0 °C, while read operations are valid down to –40 °C. This extended low-voltage mode is documented in Table 7 of DS9398 Rev 8 and applies exclusively to the "F" variant, not W or R versions.

How many unique I²C addresses can be configured on M24C02-FMN6P?

Eight unique I²C addresses (1010000x to 1010111x) are possible using the E2, E1, and E0 pins. In the UFDFPN8 package (MN6P), all three pins are accessible and must be hardwired to VCC or VSS. Each combination sets the three LSBs of the 7-bit slave address, enabling up to eight devices on a single I²C bus without address conflict.

Does M24C02-FMN6P support sequential read with automatic address roll-over?

Yes - sequential read automatically increments the internal address counter after each byte, and rolls over from address FFh to 00h upon reaching the end of the 256-byte array. This behavior is guaranteed in SO8N and TSSOP8 packages. In UFDFPN8 (MN6P), roll-over is fully supported; only the UFDFPN5 variant disables this feature due to pin count constraints.