STMicroelectronics M24C08-DRMF3TG/K

Overview

M24C08-DRMF3TG/K from STMicroelectronics is an AEC-Q100 Grade 1 qualified 8-Kbit I²C serial EEPROM for automotive applications, operating from 1.7 V to 5.5 V supply and supporting up to 1 MHz Fast-mode Plus clock. It features 1024 × 8-bit memory organized in 64 pages of 16 bytes each, includes a dedicated 16-byte identification page with permanent lock capability, and embeds single-bit error correction code (ECC) for enhanced data integrity in harsh environments such as engine control units and ADAS sensors.

For engineers reviewing the M24C08-DRMF3TG/K datasheet, M24C08-DRMF3TG/K pinout, M24C08-DRMF3TG/K application, or M24C08-DRMF3TG/K equivalent, key selection considerations include its automotive-grade temperature range (–40 °C to +125 °C), write-protection via WC pin, identification page programmability, and compatibility with I²C bus modes up to 1 MHz - critical for infotainment boot parameter storage, calibration data retention, and ECU configuration backup.

Technical Context

The device implements a fully compliant I²C target interface with start/stop detection, ACK/NACK handshaking, and 7-bit addressing extended by chip enable (E2) and read/write bit. Its internal architecture includes a Y/X decoder array, page latches, ECC logic per byte, and a high-voltage generator for write cycling - enabling reliable byte/page writes within 4 ms while maintaining immunity to single-bit errors during read operations.

Memory access supports four distinct instruction types: random address read, current address read, sequential read, and identification page read/write/lock. The identification page uses a separate device select code (1011b) and dedicated address mapping (A7 = 0 for read/write, A7 = 1 for lock), with lock status verified via truncated command polling - all executed without external firmware overhead.

Key Specifications

Pinout & Package

Supplied in TSSOP8 (DW, 169 mil width) package per ECOPACK2 environmental standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT24C08C-SSHM-T and BR24T08FJ-WE2, M24C08-DRMF3TG/K uniquely delivers ECC-protected reads, a lockable identification page, and full 125 °C operation - making it the only choice for ASIL-B-compliant powertrain and ADAS memory storage where data corruption or unauthorized modification is unacceptable.

Availability

M24C08-DRMF3TG/K is available at Aetrix Electronics and suitable for engine control units, advanced driver assistance systems, body control modules, and electric power steering systems requiring stable component supply across extended automotive lifecycles.

Supply support for M24C08-DRMF3TG/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.

This device belongs to ST's automotive-qualified serial EEPROM product line, engineered specifically for mission-critical nonvolatile storage in harsh environments where data integrity, longevity, and regulatory compliance are mandatory.

FAQ

What is the function of the WC pin on M24C08-DRMF3TG/K?

The WC (Write Control) pin is an active-high hardware write protect. When driven high, it disables acknowledgment of all data bytes during I²C write transactions, preventing unintended memory modification even if valid address and data are sent. It remains fully transparent during read operations and does not affect device addressing or ACK of device select/address bytes.

How does the identification page differ from main memory?

The identification page is a dedicated 16-byte region accessible only via device select code 1011b, supporting separate read/write/lock instructions. It contains factory-programmed ST device ID (bytes 0–2) and user-configurable fields. Once locked using the specific A7=1 address pattern, it becomes permanently read-only - unlike main memory, which remains fully alterable unless protected by WC.

Can M24C08-DRMF3TG/K operate reliably at 1 MHz across its full temperature range?

Yes - the device is specified for 1 MHz Fast-mode Plus operation from –40 °C to +125 °C per AEC-Q100 testing. This requires proper bus capacitance control (<400 pF), appropriate pull-up resistor values (calculated per Figure 10/11 in DS10156), and stable VCC decoupling. Timing margins are maintained across temperature via internal clock conditioning circuitry.

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

No - ECC logic is implemented only on the main 1024-byte memory array. The identification page has no built-in error correction; however, its permanent lock capability and factory-programmed ID bytes provide deterministic integrity for authentication purposes, while application data stored there should be externally validated if used in safety-critical contexts.