STMicroelectronics M24M01-DFMN6TP

Overview

M24M01-DFMN6TP from STMicroelectronics is a 1-Mbit I²C serial EEPROM organized as 128 K × 8 bits, operating from 1.7 V to 5.5 V across –40 °C to +85 °C. It supports 1 MHz, 400 kHz, and 100 kHz I²C bus modes, features 256-byte page write (≤5 ms), and includes hardware write protection via WC pin and dual Chip Enable inputs (E1/E2) for device addressing. Used in industrial control modules for parameter storage and calibration data retention.

For engineers reviewing the M24M01-DFMN6TP datasheet, M24M01-DFMN6TP pinout, M24M01-DFMN6TP application, or M24M01-DFMN6TP equivalent, key selection criteria include I²C speed compatibility (1 MHz max), supply voltage range (1.7–5.5 V), page size (256 bytes), write endurance (>4 million cycles), and package-specific pin mapping for SO8N (MN) footprint.

Technical Context

The M24M01-DF implements a true I²C slave interface with full compliance to standard, fast, and high-speed modes-supporting clock frequencies up to 1 MHz at VCC ≥ 2.5 V. Its internal architecture includes an address register with 17-bit addressing (A16 embedded in device select code), page decoder, and high-voltage generator for EEPROM programming.

Write control is managed through dedicated WC input: logic high disables all writes to main memory and identification page; logic low or floating enables writes. Chip Enable pins E1/E2 configure two bits of the 7-bit device address (b3,b2), enabling up to four devices on the same I²C bus without external address jumpers.

Key Specifications

Pinout & Package

Package: SO8N (150 mil width, ECOPACK2® compliant), 8-lead plastic small outline, body size 3.9 × 4.9 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24CM01-SSHD-T and BR24M10YFVM-WE2, the M24M01-DFMN6TP uniquely combines 1 MHz operation down to 1.7 V, dual CE-based addressing, hardware WC lock, and a dedicated lockable Identification Page - making it optimal for industrial and metrology applications requiring both configurability and security.

Availability

M24M01-DFMN6TP is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, medical infusion pumps, and automotive body control modules requiring stable component supply, long-lifecycle assurance, and ECOPACK2® environmental compliance.

Supply support for M24M01-DFMN6TP 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, delivering intelligent power, sensing, and connectivity solutions for industrial, automotive, and consumer markets.

The M24M01-DF belongs to ST's M24 serial EEPROM product line, engineered specifically for high-reliability industrial and metering applications demanding extended data retention, wide voltage operation, and hardware-level write protection.

FAQ

What is the function of the DU pin on M24M01-DFMN6TP?

Pin 8 is marked "DU" (Do Not Use) and has no internal connection. If physically routed on the PCB, it must be tied to VSS (ground). Applying any signal or leaving it floating violates the SO8N package specification and may cause undefined behavior or reliability risk. This pin exists solely for mechanical symmetry in the SO8N leadframe.

Can M24M01-DFMN6TP operate reliably at 1.7 V while running at 1 MHz?

Yes - unlike many 1 Mbit I²C EEPROMs, the M24M01-DF is explicitly characterized for 1 MHz operation across its full 1.7–5.5 V supply range. This is confirmed in Table 7 (Operating conditions, voltage range F) of the official datasheet (DocID12943 Rev 14), enabling high-speed parameter updates even during brown-out conditions.

How does the Identification Page differ from main memory in M24M01-DFMN6TP?

The Identification Page is a dedicated 256-byte memory region accessible only via a distinct I²C device address (1011b prefix instead of 1010b). Once locked using the Lock Identification Page command, it becomes permanently read-only - no further writes are possible, even with WC = low. This provides immutable storage for calibration IDs or security keys.

Is the SO8N package of M24M01-DFMN6TP RoHS and REACH compliant?

Yes - the SO8N package carries STMicroelectronics' ECOPACK2® designation, certifying full compliance with RoHS Directive 2011/65/EU (Pb-free, Cd-free, Hg-free, Cr⁶⁺-free, PBB/PBDE-free) and REACH SVHC thresholds. Full material declarations and test reports are available via ST's official product page under "Quality & Reliability" documentation.