STMicroelectronics M95P08-EXMNT/E

Overview

M95P08-EXMNT/E from STMicroelectronics is an 8-Mbit serial SPI page EEPROM with dual/quad output capability, organized as 2048 × 512-byte pages and two dedicated 512-byte identification pages. It operates from 1.6–3.6 V over –40 °C to +105 °C, supports up to 80 MHz clock frequency, delivers quad-output read throughput of 320 Mbits/s, and features ECC-based DEC/TED error correction for high-reliability data storage in automotive body control modules.

For engineers reviewing the M95P08-EXMNT/E datasheet, M95P08-EXMNT/E pinout, M95P08-EXMNT/E application, or M95P08-EXMNT/E equivalent, key selection criteria include industrial-grade temperature range (–40 °C to +105 °C), ultra-low deep power-down current (0.6 μA typ), page-program-with-buffer-load latency hiding, SFDP support, and block-level write protection with top/bottom configuration.

Technical Context

The M95P08-EXMNT/E implements a SPI-compatible interface with configurable CPOL/CPHA modes (0,0 or 1,1), enabling seamless integration with MCU peripherals. Its PEC (Program/Erase Controller) manages self-timed auto-erase-and-program operations, ensuring consistent 2 ms typical byte/page write times across full temperature range and lifetime cycling.

ECC logic provides transparent double-bit correction and triple-bit detection over 16-byte chunks, with status flags accessible via safety register. Dual/quad output read modes repurpose W-DQ2 and HOLD-DQ3 as data outputs during fast-read commands, while maintaining standard SPI pin behavior during instruction/address phases.

Key Specifications

Pinout & Package

Package: UFDFPN8 (2 mm × 3 mm, 0.5 mm pitch), ECOPACK2 RoHS/halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25SF081A-MAHB-T, M95P08-EXMNT/E offers true EEPROM flexibility (byte/page alterability, no erase-before-write) and ECC; versus M95P08-RMN6TP, it delivers identical functionality in a space-constrained 2×3 mm DFN, critical for compact automotive modules.

Availability

M95P08-EXMNT/E is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical infusion pump designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-qualified extended temperature performance.

Supply support for M95P08-EXMNT/E 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 nonvolatile memory solutions for automotive, industrial, and consumer markets.

The M95P08 series belongs to ST's high-reliability serial EEPROM product line, engineered specifically for applications demanding byte-level alterability, ECC-protected data integrity, and ultra-low-power operation across extended temperature ranges.

FAQ

Is M95P08-EXMNT/E pin-compatible with standard SPI NOR flash devices?

No. While both use 8-pin SPI packages, M95P08-EXMNT/E implements page EEPROM architecture with byte-alterable memory, no erase-before-write requirement, and dedicated identification pages - unlike NOR flash which requires sector erase prior to programming. Pin functions differ in dual/quad modes (W/HOLD become DQ2/DQ3), and timing parameters (e.g., 2 ms page write vs. 50+ ms NOR program) are incompatible.

Does the device support hardware write protection independent of software commands?

Yes. The W-DQ2 pin serves as a hardware write protect input that freezes the protected memory block size defined by BPn/TB bits in the status register. When W is held low, all write/program/erase instructions to protected blocks are ignored - even if the Write Enable Latch (WEL) bit is set - providing fail-safe protection against firmware bugs or voltage glitches.

How does ECC operate during read operations, and is it configurable?

ECC is always active and fully transparent: no command or register setting is required. On every 16-byte read chunk, hardware performs double-bit correction and triple-bit detection; corrected data is delivered to the host, while error flags (DEC/TED) are updated in the safety register. Detection flags persist until cleared by software, enabling diagnostic logging without interrupting normal reads.

What is the purpose of the two identification pages, and can they be written after initial programming?

The first 512-byte ID page contains factory-programmed data and optional UID (assigned at request); the second ID page is user-writable and supports permanent read-only locking via software command. Once locked, its contents cannot be modified - ideal for storing cryptographic keys or calibrated sensor offsets that must survive field updates and reprogramming cycles.