STMicroelectronics M95P32-IXMNT/E

Overview

M95P32-IXMNT/E from STMicroelectronics is a 32-Mbit serial SPI page EEPROM with dual/quad output capability, organized as 8192 × 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 for DEC/TED correction, deep power-down (0.6 μA), and fast page write (2 ms typical).

For engineers reviewing the M95P32-IXMNT/E datasheet, M95P32-IXMNT/E pinout, M95P32-IXMNT/E application, or M95P32-IXMNT/E equivalent, this device serves as a high-reliability, ultra-low-power nonvolatile memory for automotive infotainment boot storage, industrial PLC parameter retention, medical device calibration data logging, and IoT edge node firmware configuration - where byte/page flexibility, long data retention (100 years), and ISO26262-compatible status flags are critical.

Technical Context

The M95P32-IXMNT/E implements a SPI interface compliant with CPOL=0/CPHA=0 and CPOL=1/CPHA=1 modes, with dual/quad output read commands enabling simultaneous data transfer on DQ0–DQ3 pins synchronized to falling SCK edges. Its PEC (Program/Erase Controller) manages self-timed erase-and-program operations, ensuring consistent 2 ms page write times across temperature and lifetime.

Memory organization includes 64-Kbyte blocks, 4-Kbyte sectors, and 512-byte pages, with two dedicated ID pages - one for UID (on request) and one for lockable sensitive parameters. The safety register provides ISO26262-compliant operating status flags, while SFDP mode enables runtime discovery of device capabilities.

Key Specifications

Pinout & Package

Package: UFDFPN8 (4 mm × 4 mm, 0.55 mm height), ECOPACK2-compliant, RoHS-compliant surface-mount package optimized for space-constrained automotive and portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AT25SF321A-MAHD-Y, the M95P32-IXMNT/E delivers 5× higher write endurance and hardware ECC - essential for parameter logging. Versus M95P32-DRMN6TP/K, it offers 44% smaller area and improved thermal response in compact automotive modules, with no trade-off in reliability or timing.

Availability

M95P32-IXMNT/E is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLCs, and medical diagnostics equipment requiring stable component supply, extended temperature operation (–40 °C to +105 °C), and long-term data integrity.

Supply support for M95P32-IXMNT/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, designing and manufacturing microcontrollers, power ICs, sensors, and nonvolatile memory for automotive, industrial, and consumer applications.

The M95P32 series belongs to ST's ultra-low-power serial EEPROM product line, engineered specifically for mission-critical data retention in harsh environments where endurance, ECC, and extended temperature operation are mandatory.

FAQ

What is the difference between M95P32-IXMNT/E and M95P32-I?

The M95P32-IXMNT/E is the extended-temperature variant rated for –40 °C to +105 °C operation, while the M95P32-I is rated for –40 °C to +85 °C. Both share identical electrical specifications, pinout, package (UFDFPN8), and feature set including ECC, quad-SPI, and deep power-down. The 'E' suffix denotes extended thermal qualification per AEC-Q100 stress testing.

Does M95P32-IXMNT/E require external hardware for write protection?

No - write protection is implemented internally via nonvolatile BPn and TB bits in the status register, configurable via SPI commands. The W-DQ2 pin provides optional hardware freeze of protection boundaries but is not required for basic block-level locking. Hardware protection remains active even during deep power-down.

Can M95P32-IXMNT/E be used as a direct replacement for standard SPI NOR flash?

No - it is a page EEPROM, not NOR flash. It supports true byte/page writes without prior sector erase, has 500 kcycle endurance (vs ~100 k for typical NOR), and integrates ECC and safety registers. NOR flash lacks auto-erase, requires explicit erase commands, and offers no built-in error correction or ISO26262 flags.

How is the Unique ID provisioned on M95P32-IXMNT/E?

The UID is factory-programmed into the first identification page upon customer request and is permanently read-only. It occupies fixed byte locations within that 512-byte page and cannot be altered post-manufacture. UID provisioning requires ordering with specific part number suffixes (e.g., -UID) and is subject to ST's secure key management process.