STMicroelectronics M24512-DRMN3TP/K

Overview

M24512-DRMN3TP/K from STMicroelectronics is an AEC-Q100 Grade 1 automotive serial EEPROM delivering 512 Kbit (64 Kbyte) nonvolatile storage over I²C at up to 1 MHz, with 128-byte page size, -40 °C to 125 °C operation, and 1.7 V to 5.5 V supply range. It integrates an embedded ECC logic for enhanced data integrity and includes a dedicated 128-byte lockable Identification Page for device ID and application parameters.

For engineers reviewing the M24512-DRMN3TP/K datasheet, M24512-DRMN3TP/K pinout, M24512-DRMN3TP/K application, or M24512-DRMN3TP/K equivalent, key selection considerations include its automotive-grade temperature/voltage specs, 4 million write cycles at 25 °C, 50-year data retention at 125 °C, Schmitt-trigger noise immunity, and WC-controlled hardware write protection.

Technical Context

The device operates as a slave on the I²C bus using standard Start/Stop protocols and supports all I²C modes (100 kHz, 400 kHz, 1 MHz). Its memory array is organized into 512 pages of 128 bytes each, with address decoding based on two-byte addressing (A15–A0) and device select code (1010b for memory, 1011b for Identification Page).

It implements hardware-based write inhibition via the WC pin, which disables all writes when high, and features an additional 128-byte Identification Page accessible via distinct device select codes. The internal ECC logic corrects single-bit errors across all memory pages, improving reliability in harsh automotive environments.

Key Specifications

Pinout & Package

Package: SO8N (150 mil width, 3.9 × 4.9 mm, RoHS-compliant and halogen-free ECOPACK2®).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C512B-SSHL-T and BR24T512FJ-WE2, the M24512-DRMN3TP/K uniquely combines AEC-Q100 Grade 1 qualification, embedded ECC, lockable Identification Page, and hardware WC pin-making it the only choice for mission-critical automotive storage where data integrity and tamper resistance are mandated.

Availability

M24512-DRMN3TP/K is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, body control modules, and infotainment head units requiring stable component supply across extended automotive lifecycles.

Supply support for M24512-DRMN3TP/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 specializing in automotive, industrial, and power management ICs, with broad expertise in nonvolatile memory design and AEC-Q100 qualification.

The M24512-A125 product line targets automotive electronics demanding high-reliability EEPROM storage-specifically designed for ECU, ADAS, and body electronics where extended temperature operation, data integrity, and functional safety are essential.

FAQ

What is the function of the WC pin on the M24512-DRMN3TP/K?

The WC (Write Control) pin is a hardware enable/disable input for all write operations. When driven high, it inhibits writes to both main memory and the Identification Page-even if valid I²C commands are sent. This prevents accidental corruption during power transitions or firmware faults. When low or floating, writes are permitted subject to address and page boundaries.

Does the M24512-DRMN3TP/K require external components for I²C operation?

Yes: external pull-up resistors on SDA and SCL lines are mandatory. Their values depend on bus capacitance and target clock speed (e.g., ≤1 kΩ for 1 MHz with ≤20 pF bus load). No external capacitors or voltage regulators are needed-the device operates directly from VCC (1.7–5.5 V) and includes internal charge-pump circuitry for EEPROM programming.

How is the Identification Page different from main memory?

The Identification Page is a separate 128-byte block accessible via distinct I²C device select code (1011b instead of 1010b). It contains factory-programmed ST identifiers (bytes 0–2) and user-writable fields. Once locked via the Lock Identification Page command, the entire page becomes permanently read-only-unlike main memory, which remains fully writable unless protected by WC or software locks.

Can the M24512-DRMN3TP/K be used in non-automotive applications?

Yes-it functions reliably in industrial and commercial systems, but its AEC-Q100 Grade 1 qualification, extended temperature range (-40 °C to 125 °C), and 50-year data retention at 125 °C are over-spec for most non-automotive uses. For cost-sensitive non-automotive designs, lower-grade alternatives like the M24512-DWDW may be more appropriate, though they lack the same endurance and retention guarantees.