STMicroelectronics M24512-DFMN6TP

Overview

M24512-DFMN6TP from STMicroelectronics is a 512-Kbit (64 Kbyte) I²C-compatible serial EEPROM with 128-byte page size, 1.7 V to 5.5 V single-supply operation, and 1 MHz max clock speed. It features an additional write-lockable 128-byte identification page, enhanced ESD/latch-up protection, and supports industrial temperature range (–40 °C to +85 °C). Used in embedded systems for storing calibration data, device configuration, and secure parameters.

For engineers reviewing the M24512-DFMN6TP datasheet, M24512-DFMN6TP pinout, M24512-DFMN6TP application, or M24512-DFMN6TP equivalent, key selection considerations include supply voltage headroom (1.7 V min), identification page lockability, I²C bus mode compatibility (100 kHz/400 kHz/1 MHz), and ECOPACK2®-compliant TSSOP8 packaging for space-constrained PCBs.

Technical Context

The M24512-DFMN6TP implements a standard I²C slave interface with hardware-based chip enable (E0–E2) addressing and write control (WC) input for full-array write protection. Its internal ECC logic operates transparently across groups of four bytes, correcting single-bit errors during read operations without protocol modification.

It supports three I²C bus modes (100 kHz, 400 kHz, 1 MHz), uses open-drain SDA with external pull-up, and incorporates a power-on-reset (POR) circuit that prevents spurious writes during power ramp-up. The identification page-accessible via dedicated device select code (1011b)-is writable and permanently lockable to read-only mode using a specific address-bit pattern (A10 = 1).

Key Specifications

Pinout & Package

Package: TSSOP8 (DW), 169 mil width, ECOPACK2®-compliant, surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C512-MAHM-T and BR24G512FJ-WE2, the M24512-DFMN6TP uniquely delivers a cryptographically relevant, hardware-locked identification page - critical for traceability, anti-cloning, and regulatory compliance in medical and industrial deployments.

Availability

M24512-DFMN6TP is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, smart utility meters, and automotive body control modules requiring stable component supply, long-lifecycle assurance, and ECOPACK2®-compliant packaging.

Supply support for M24512-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, designing and manufacturing microcontrollers, power ICs, sensors, and memory solutions for industrial, automotive, and consumer markets.

The M24512 series belongs to ST's high-reliability serial EEPROM product line, engineered specifically for mission-critical data storage in harsh environments where data integrity, long-term retention, and hardware-level security are mandatory.

FAQ

What is the function of the WC pin on the M24512-DFMN6TP?

The WC (Write Control) pin is an active-high hardware write protect input. When driven high, it disables all write operations-including byte, page, and identification page writes-regardless of I²C command or address. This provides fail-safe, non-software-dependent protection against unintended memory corruption during power transients or firmware faults.

How does the identification page differ from standard memory pages?

The identification page is a dedicated 128-byte region accessible only via device select code 1011b. Unlike standard pages, it supports a permanent lock command (A10 = 1) that irreversibly disables further writes. Once locked, reads remain functional but all write attempts return NoAck-enabling secure storage of immutable identifiers or keys.

Can the M24512-DFMN6TP operate reliably at 1.7 V while running at 1 MHz?

Yes. The M24512-DFMN6TP is fully specified for 1 MHz I²C operation across its entire 1.7 V to 5.5 V supply range. Electrical characteristics-including setup/hold times, rise/fall times, and ACK timing-are guaranteed at 1.7 V, enabling direct interface with ultra-low-voltage MCUs without level shifters.

Is ECC applied to the identification page?

No. Error Correction Code (ECC) is implemented only on the main 64 Kbyte memory array, operating per 4-byte group. The identification page has no ECC protection. However, its permanent lock capability and separate addressing reduce exposure to bit errors, and its typical usage (infrequent writes, static reads) mitigates risk.