STMicroelectronics M24C16-DRDW3TP/K

Overview

M24C16-DRDW3TP/K from STMicroelectronics is an AEC-Q100 Grade 1 automotive serial EEPROM with 16 Kbits (2 Kbytes) of I²C-compatible memory, 1 MHz max clock rate, and operation from –40 °C to 125 °C at 1.7–5.5 V. It features a 16-byte page size, embedded ECC for single-bit error correction, and a write-lockable 16-byte identification page used for device ID and application parameters in engine control units.

For engineers reviewing the M24C16-DRDW3TP/K datasheet, M24C16-DRDW3TP/K pinout, M24C16-DRDW3TP/K application, or M24C16-DRDW3TP/K equivalent, key selection criteria include automotive temperature compliance, I²C bus speed support (100/400 kHz/1 MHz), page write timing (≤4 ms), write endurance at 125 °C (600 k cycles), and identification page lockability for secure parameter storage.

Technical Context

The M24C16-DRDW3TP/K implements a true EEPROM array organized as 128 pages × 16 bytes (2048 × 8 bits), with ECC logic applied per byte to detect and correct single-bit errors during read operations. Its I²C slave interface supports standard, fast, and fast-plus modes up to 1 MHz, using open-drain SDA with external pull-up and edge-triggered SCL.

Write protection is managed via the dedicated WC (Write Control) input: high = full memory lockout (no data ACK), low or floating = write enabled. The device includes a separate 16-byte identification page accessible via distinct device select code (1011b), supporting read, write, and permanent lock instructions independent of main array access.

Key Specifications

Pinout & Package

TSSOP8 (DW) package, 169 mil width, RoHS-compliant and halogen-free (ECOPACK2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C16D-SSHM-T and BR24G16NUX-100, the M24C16-DRDW3TP/K uniquely combines Grade 1 temperature rating, embedded ECC, dedicated WC pin, and 1 MHz I²C speed - making it the only option qualified for safety-critical, high-temperature, high-integrity automotive memory tasks.

Availability

M24C16-DRDW3TP/K is available at Aetrix Electronics and suitable for engine control units, ADAS sensor modules, transmission control systems, and body electronics requiring stable component supply across automotive production lifecycles.

Supply support for M24C16-DRDW3TP/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 ICs, sensors, and memory solutions for automotive, industrial, and consumer markets.

The M24C16-DRDW3TP/K belongs to ST's automotive-grade serial EEPROM product line, engineered specifically for mission-critical data retention in harsh thermal and electrical environments found in modern vehicles.

FAQ

What is the function of the WC pin on the M24C16-DRDW3TP/K?

The WC (Write Control) pin provides hardware-level write protection: when driven high, it disables all write operations to both the main memory array and identification page, preventing accidental or transient-induced data corruption. When low or left floating, writes are enabled. This feature is critical for automotive systems where power glitches or EMI could otherwise trigger unintended writes during startup or fault conditions.

Does the M24C16-DRDW3TP/K support 1 MHz I²C communication in automotive environments?

Yes - the device is fully specified for 1 MHz I²C operation across its full automotive temperature range (–40 °C to +125 °C) and supply voltage range (1.7–5.5 V). Its Schmitt-trigger inputs provide noise filtering on SDA and SCL, and internal timing parameters (e.g., t_BUF, t_HD;STA) are guaranteed at 125 °C, enabling deterministic high-speed communication in electric powertrain and ADAS subsystems.

How does the identification page differ from the main memory array?

The identification page is a dedicated 16-byte area accessed via a unique I²C device address (1011b prefix). It contains factory-programmed ST device ID (0x20, 0xE0, 0x0B) in bytes 0–2 and user-writable fields in bytes 3–15. Once locked via the "lock ID" instruction, the entire page becomes permanently read-only - unlike the main array, which remains writable unless protected by WC or software addressing restrictions.

Is ECC applied to the identification page as well as the main memory array?

No - ECC (error correction code) is implemented only on the main 16-Kbit memory array (2048 bytes), not on the 16-byte identification page. The identification page relies on its lockability and factory programming for integrity; ECC coverage is explicitly limited to the user-accessible memory region per DS10068 Rev 7 Section 5.2 and Figure 1 logic diagram.