STMicroelectronics M95080-RMC6TG

Overview

M95080-RMC6TG from STMicroelectronics is an 8-Kbit serial SPI bus EEPROM organized as 1024 × 8 bits, operating from 1.8 V to 5.5 V supply and rated for -40 °C to +85 °C ambient temperature. It supports up to 20 MHz clock frequency, features 32-byte page write capability with ≤5 ms byte/page write time, and includes an additional 32-byte identification page with permanent lock capability. It is used in industrial control modules for nonvolatile parameter storage requiring high endurance and long-term data retention.

For engineers reviewing the M95080-RMC6TG datasheet, M95080-RMC6TG pinout, M95080-RMC6TG application, or M95080-RMC6TG equivalent, key selection criteria include its 1.8 V minimum V_CC, ECC-enabled read reliability, hardware/software write protection (BP1/BP0 + W/SRWD), and RoHS-compliant UFDFPN8 (2 × 3 mm) package compatibility with space-constrained embedded designs.

Technical Context

The device implements a standard SPI interface supporting CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes, with data latched on C's rising edge and output on falling edge. Its internal architecture includes an ECC x1 logic per memory byte, enabling single-bit error correction during reads without protocol overhead.

It integrates a status register with non-volatile BP1/BP0 bits for software-configurable block protection (none, upper quarter, upper half, or full array), plus SRWD/W pin interaction for hardware-locked status register writes. The dedicated identification page (32 bytes) supports secure parameter storage and one-time locking via LID instruction.

Key Specifications

Pinout & Package

Package: UFDFPN8 (2 mm × 3 mm, 0.4 mm pitch), RoHS-compliant and halogen-free (ECOPACK2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25080B-SSHL-T and BR24G08NUX-10, M95080-RMC6TG provides superior data integrity (ECC), secure provisioning (ID page + LID), and real-time communication control (HOLD), making it optimal for industrial and medical applications demanding long-term reliability and security.

Availability

M95080-RMC6TG is available at Aetrix Electronics and suitable for industrial PLCs, smart energy meters, automotive body controllers, and medical diagnostic sensors requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for M95080-RMC6TG 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.

M95080-RMC6TG belongs to ST's serial EEPROM product line, engineered specifically for robust, low-voltage, high-reliability nonvolatile storage in space-constrained and mission-critical embedded systems.

FAQ

What is the function of the HOLD pin on M95080-RMC6TG?

The HOLD pin (Pin 4) pauses ongoing SPI communication without deselecting the device or resetting the internal clock sequence. When driven low while Chip Select (S) is active, Q goes high-impedance and D/C are ignored, allowing the host MCU to service higher-priority interrupts and resume exactly where the transfer left off. This avoids retransmission overhead in real-time systems.

How does the identification page differ from main memory?

The identification page is a separate 32-byte memory region accessible only via RDID/WRID instructions-not via standard READ/WRITE-and supports permanent read-only locking via the LID instruction. Unlike main memory, its contents survive SRWD+WP hardware lock activation and are intended for immutable device-specific data such as serial numbers or cryptographic keys.

Can M95080-RMC6TG operate reliably at 1.8 V with 20 MHz SPI clock?

Yes-its 1.8 V to 5.5 V supply range and 20 MHz maximum clock frequency are simultaneously valid per DS8776 Rev 5 AC specifications. At 1.8 V, t_CLQV (clock-to-output delay) is 120 ns and t_SU (data setup time) is 10 ns, fully compatible with modern 1.8 V MCUs running SPI at 20 MHz with appropriate timing margins.

What protection mechanisms prevent accidental writes to memory?

Three layered protections apply: (1) Write Enable Latch (WEL) must be set via WREN before each WRITE/WRSR; (2) Software block protection (BP1/BP0 bits) restricts writable address ranges; (3) Hardware protection engages when SRWD=1 and W=low, disabling all status register writes-including BP bit changes-until power cycle or explicit unlock sequence.