STMicroelectronics M95080-DFMC6TG

Overview

M95080-DFMC6TG from STMicroelectronics is an 8-Kbit serial SPI bus EEPROM organized as 1024 × 8 bits, operating from 1.7 V to 5.5 V over –40 °C to +85 °C. It features a 32-byte page size, 5 ms max byte/page write time, 20 MHz clock support, and includes a dedicated 32-byte Identification page with permanent lock capability for secure parameter storage in industrial control modules.

For engineers reviewing the M95080-DFMC6TG datasheet, M95080-DFMC6TG pinout, M95080-DFMC6TG application, or M95080-DFMC6TG equivalent, key selection criteria include its ultra-low 1.7 V supply compatibility, ECC x1 single-bit error correction per byte, hardware/software write protection (BP1/BP0 + SRWD/W), and identification page locking via LID instruction - critical for firmware-secure boot and calibration data integrity.

Technical Context

The M95080-DFMC6TG implements a synchronous SPI interface compliant with CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes, latching input on rising C edge and outputting on falling C edge. Its internal architecture integrates an HV generator, sequencer, ECC x1 logic per memory byte, and status register with non-volatile BP1/BP0 and SRWD bits.

It supports three protection layers: software block protection (quarter/half/whole array via BP1/BP0), hardware write protection (SRWD + W pin), and permanent read-only lock of the Identification page (via LID instruction). The device enters Hold state when HOLD is low while selected, preserving internal state without resetting clock sequence.

Key Specifications

Pinout & Package

Package: UFDFPN8 (2 mm × 3 mm, MC variant), 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 AT25080B-SSHL-T and BR24G08NUX-10, the M95080-DFMC6TG uniquely delivers ECC x1 per byte, a lockable Identification page, and full 1.7 V compatibility - making it the only choice for applications demanding simultaneous low-voltage operation, field-updatable security, and EMI-resilient data retention.

Availability

M95080-DFMC6TG is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive body control units, and smart utility meters requiring stable component supply across multi-year production cycles.

Supply support for M95080-DFMC6TG 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 industrial, automotive, and consumer markets.

The M95080 series belongs to ST's serial EEPROM product line, engineered specifically for robust, low-power, secure non-volatile storage in space-constrained embedded systems requiring high reliability under voltage variation and electrical noise.

FAQ

What is the function of the HOLD pin on M95080-DFMC6TG?

The HOLD pin pauses ongoing SPI communication without deselecting the device or resetting internal state. When asserted low while chip select (S) is low, Q goes high-impedance and D/C are ignored, allowing the host MCU to service higher-priority interrupts. Communication resumes immediately upon deasserting HOLD, preserving clock phase and transaction context - essential for real-time systems with tight timing budgets.

How does the Identification page differ from standard memory pages?

The Identification page is a dedicated 32-byte memory region accessible only via RDID/WRID instructions, physically isolated from the main 1024-byte array. It supports permanent read-only locking via the LID instruction, which irreversibly disables further writes - enabling secure storage of cryptographic keys, calibration signatures, or device-specific identifiers that must survive firmware updates and field servicing.

Can M95080-DFMC6TG operate reliably at 1.7 V during write operations?

Yes - the M95080-DFMC6TG guarantees full functionality including byte/page writes, status register access, and Identification page locking across its entire 1.7 V to 5.5 V supply range. Internal charge pump and voltage regulation ensure consistent programming voltage generation down to 1.7 V, validated per DS8776 Rev 5 AC/DC parameters - unlike competing EEPROMs that restrict write capability above 1.8 V.

What protection mechanisms prevent accidental writes to the Status register?

Three independent mechanisms guard the Status register: (1) WREN instruction must precede any WRSR command; (2) BP1/BP0 bits define protected memory blocks and are non-volatile; (3) SRWD bit + W pin enable Hardware Protected mode, making SRWD, BP1, and BP0 permanently read-only once set. This layered approach prevents corruption from software bugs, ESD events, or power glitches during critical configuration changes.