STMicroelectronics M24512-DRDW8TP/K

Overview

M24512-DRDW8TP/K from STMicroelectronics is a 512-Kbit (64 Kbyte) I²C-compatible serial EEPROM with 128-byte page size, 1.7–5.5 V operating voltage, -40 °C to +105 °C temperature range, and embedded ECC for enhanced data integrity. It integrates a dedicated 128-byte Identification Page with permanent lock capability and supports up to 1 MHz I²C bus speed - deployed in automotive body control modules for storing calibrated sensor offsets and configuration parameters.

For engineers reviewing the M24512-DRDW8TP/K datasheet, M24512-DRDW8TP/K pinout, M24512-DRDW8TP/K application, or M24512-DRDW8TP/K equivalent, key selection considerations include its AEC-Q100 Grade 2 qualification, 4 million write cycles at 25 °C, 50-year data retention at 105 °C, TSSOP8 package footprint, and WC-controlled hardware write protection.

Technical Context

The device operates as an I²C slave with fixed 7-bit device type identifier (1010b for memory, 1011b for Identification Page) and user-configurable 3-bit chip enable address (E2/E1/E0), enabling up to eight devices on one bus. It implements true EEPROM technology with byte-alterable storage and automatic address incrementing after write completion.

Internal Error Correction Code logic corrects single-bit errors and detects double-bit errors across all 64 Kbytes; the separate Identification Page supports factory-programmed ST device codes (20h/E0h/10h) and user-writable application parameters that can be permanently locked via WC-driven command sequence.

Key Specifications

Pinout & Package

Package: TSSOP8 (DW), 3 mm × 6.4 mm, 0.65 mm pitch, 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 BR24G512FJ-3GE2, the M24512-DRDW8TP/K uniquely combines AEC-Q100 Grade 2 qualification, hardware WC lock, embedded ECC, and a dedicated Identification Page - making it the sole choice for automotive and medical applications demanding concurrent reliability, security, and longevity.

Availability

M24512-DRDW8TP/K is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC configuration storage, and medical infusion pump calibration requiring stable component supply across extended temperature and high-reliability lifecycles.

Supply support for M24512-DRDW8TP/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, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and memory solutions for automotive, industrial, and consumer markets.

The M24512-DRE series targets high-reliability embedded systems requiring extended temperature operation, AEC-Q100 qualification, and hardware-enforced data integrity - specifically engineered for automotive ECUs and industrial controllers exposed to thermal stress and electrical noise.

FAQ

What is the function of the WC pin on the M24512-DRDW8TP/K?

The WC (Write Control) pin is a hardware-level write protection input. When driven high, it globally disables all write operations to the entire memory array-including Byte Write, Page Write, and Identification Page Write-regardless of I²C command sequence. This prevents accidental or malicious overwrites during power-up transients, firmware crashes, or electromagnetic interference events. WC does not affect read operations.

Does the M24512-DRDW8TP/K support standard I²C addressing modes?

Yes. The device supports standard 7-bit I²C addressing with two device type identifiers: 1010b for main memory access and 1011b for Identification Page access. Chip enable is set via E2/E1/E0 pins, allowing up to eight devices on one bus. It fully complies with I²C bus specifications for 100 kHz, 400 kHz, and 1 MHz modes, including START/STOP condition timing and ACK/NACK handshaking.

How is the Identification Page used and secured?

The 128-byte Identification Page contains three factory-programmed bytes (ST manufacturer code 20h, I²C family code E0h, density code 10h) followed by user-writable space. After writing application-specific data, the entire page can be permanently locked in read-only mode using a dedicated I²C command sequence. Once locked, no further writes are possible-even if WC is low-ensuring immutable device identity and critical parameter storage.

Is ECC applied to both main memory and the Identification Page?

Yes. The embedded Error Correction Code logic operates across the full 64 Kbyte memory space, including both the main 512-Kbit array and the 128-byte Identification Page. It provides single-bit error correction and double-bit error detection on every read operation, ensuring data integrity without requiring host-side ECC implementation or additional software overhead.