STMicroelectronics M24C08-DRDW8TP/K

Overview

M24C08-DRDW8TP/K from STMicroelectronics is an 8-Kbit I²C serial EEPROM with 1024 × 8-bit memory organization, 16-byte page size, and extended industrial temperature operation up to +105 °C. It features Schmitt-trigger inputs for noise immunity, 4 ms max byte/page write time, and a dedicated 16-byte identification page with permanent lock capability - deployed in automotive body control modules for calibration storage and fault log retention.

For engineers reviewing the M24C08-DRDW8TP/K datasheet, M24C08-DRDW8TP/K pinout, M24C08-DRDW8TP/K application, or M24C08-DRDW8TP/K equivalent, key selection criteria include I²C bus speed support (1 MHz/400 kHz/100 kHz), -40 °C to +105 °C operating range, 1.7–5.5 V supply voltage compatibility, and WC-controlled hardware write protection.

Technical Context

The device operates as a slave on the I²C bus using standard Start/Stop conditions and 7-bit addressing with device-type prefix (1010b for main memory, 1011b for identification page). Communication relies on open-drain SDA with external pull-up and edge-triggered SCL, supporting ACK polling to minimize write latency.

Memory is organized into 64 pages of 16 bytes each, with embedded ECC logic enhancing data integrity. The identification page (16 bytes) contains factory-programmed ST device codes (20h/E0h/0Ah) and user-writable fields that can be permanently locked via WC pin assertion and dedicated lock instruction.

Key Specifications

Pinout & Package

TSSOP8 (DW) package: 8-lead thin shrink small outline, 3 mm × 6.4 mm body, 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 AT24C08D-SSHM-T and BR24G08FJ-WE2, the M24C08-DRDW8TP/K uniquely combines AEC-Q100 Grade 2 qualification, embedded ECC, and a lockable identification page - making it the only option among the three qualified for safety-critical automotive calibration storage where data authenticity and long-term retention are mandated.

Availability

M24C08-DRDW8TP/K is available at Aetrix Electronics and suitable for automotive body control units, industrial PLCs, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature and voltage ranges.

Supply support for M24C08-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, delivering automotive, industrial, and power management solutions with emphasis on functional safety and reliability.

The M24C series targets automotive and industrial applications demanding extended temperature operation, AEC-Q100 qualification, and robust nonvolatile storage - designed specifically for calibration, configuration, and fault log retention in harsh environments.

FAQ

What is the function of the WC pin on the M24C08-DRDW8TP/K?

The WC (Write Control) pin is a hardware write-protection input. When driven high, it disables all write operations to both main memory and identification page - preventing accidental overwrites during power transients or firmware glitches. When low or floating, writes are enabled. This pin is essential for safeguarding calibration data in automotive and medical applications where data integrity is safety-critical.

Does the M24C08-DRDW8TP/K support 1 MHz I²C operation across its full temperature range?

Yes. The device supports 1 MHz I²C communication from -40 °C to +105 °C, as verified in Table 12 of the official datasheet (DocID027422 Rev 2). This requires compliance with AC timing parameters including t_LOW ≥ 0.5 μs, t_HIGH ≥ 0.4 μs, and bus capacitance ≤ 100 pF - achievable with proper PCB layout and pull-up resistor selection (typically 1.8–2.2 kΩ for 3.3 V).

How is the identification page structured and secured?

The identification page is a dedicated 16-byte block. Bytes 0–2 contain ST's factory-programmed device ID (20h/E0h/0Ah); bytes 3–15 are user-writable. Once written, the entire page can be permanently locked in read-only mode using the "Lock Identification Page" instruction - enforced by internal fuse logic, not software flag. Locked status is readable via "Read lock status" command.

Is ECC implemented in hardware or firmware on the M24C08-DRDW8TP/K?

ECC is implemented in dedicated on-die logic - automatic single-bit error correction occurs transparently during every read operation without MCU intervention or additional timing overhead. No firmware driver or configuration is required. This hardware ECC enhances data reliability in electrically noisy environments such as automotive powertrain and industrial motor drives.