M25P32-VMW3GB - 32Mbit SPI NOR Flash 75MHz | Micron
MPN: M25P32-VMW3GB β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.33 | $665.00 |
| 1,000 | $1.18 | $1,180.00 |
Drop-in alternatives for M25P32-VMW3GB β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
M25P32-VMW6TG
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
M25P32-VMW6GBA
β Drop-Inπ Reference alternative (not in catalog)
M25P32-VMW3TPB
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
M25P32-VME6G
β Drop-Inπ Reference alternative (not in catalog)
AT25SF321B-SHB-T
β Drop-Inπ Reference alternative (not in catalog)
M25P32-VMW3GB Maximum Ratings & Electrical Characteristics
| Memory Type | NOR Flash, Serial SPI |
| Density | 32 Mbit (4M x 8) |
| Organization | 4M x 8 |
| Interface | SPI, modes 0 and 3 |
| Max Clock Frequency | 75 MHz |
| Supply Voltage | 3.0 V to 3.6 V |
| Page Size | 256 bytes |
| Sector Size | 64 Kbytes (64 sectors) |
| Package | 8-SOIC wide-body (VMW, 208 mil) |
| Mounting Type | Surface Mount |
| Qualification | AEC-Q100 (automotive) |
| Write Protection | Hardware (/WP) and software block protection |
| Deep Power-Down | Supported, ~1 uA standby (per family datasheet) |
| Packaging | Tube |
M25P32-VMW3GB Pin Configuration
| Pin 1 | /CS β Chip select (active low) |
| Pin 2 | DO β Serial data output (MISO) |
| Pin 3 | /WP β Write protect (active low) |
| Pin 4 | VSS β Ground |
| Pin 5 | DI β Serial data input (MOSI) |
| Pin 6 | SCK β Serial clock |
| Pin 7 | /HOLD β Hold (pause serial communication, active low) |
| Pin 8 | VCC β Power supply (3.0 V to 3.6 V) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
M25P32-VMW3GB is suitable for 6 applications: Automotive ECU Firmware Storage, FPGA Configuration Storage, Industrial Automation Controllers, Set-Top Box and Consumer Electronics Boot Memory, Networking Equipment Parameter Storage, Battery-Powered and Deep-Sleep IoT Devices.
Automotive ECU Firmware Storage
The M25P32-VMW3GB is AEC-Q100 qualified, making it directly suited to storing boot code, firmware images, and calibration data in automotive electronic control units. Its 32 Mbit capacity comfortably holds bootloader plus application images for 32-bit MCUs, and the 75 MHz FAST_READ instruction shortens ECU boot time versus slower 20-33 MHz legacy serial flashes. The 64 uniform 64-Kbyte sectors allow A/B firmware banks with sector-level update granularity, while /WP-based hardware protection guards calibration sectors against corruption. Because the device is EOL, new automotive designs should dual-qualify the AT25SF321B; existing programs can continue consuming M25P32 last-time-buy stock with the same 8-SOIC footprint.
Recommended
FPGA Configuration Storage
FPGAs frequently boot from serial NOR flash; the M25P32-VMW3GB's 32 Mbit density covers mid-range FPGA bitstreams and the 75 MHz FAST_READ mode reduces configuration time compared to 33 MHz parts. The standard M25P command set (READ, FAST_READ) is natively supported by many FPGA configuration controllers and soft-core bootloaders - an Intel/Altera community thread documents exactly this usage with M25P32 devices on Xilinx-class boards, where the AT25SF321B is validated as a drop-in successor. Place the flash close to the FPGA with short SCK/DO traces to sustain 75 MHz reads, and use the /HOLD pin to share the SPI bus with other peripherals during configuration.
Recommended
Industrial Automation Controllers
Industrial PLCs, motor drives, and I/O modules need nonvolatile storage for firmware, parameter sets, and fault logs. The M25P32-VMW3GB offers 4 Mbytes organized as 64 eraseable 64-Kbyte sectors, letting designers separate protected firmware regions from frequently rewritten logging regions under software block protection. Its single 3.3 V supply integrates directly with industrial logic rails, and deep power-down (~1 uA) supports battery-backed modules. Endurance of the floating-gate NOR technology suits parameter updates at realistic industrial rates. Because sector erase takes on the order of seconds per 64-Kbyte block, firmware-update routines should copy to RAM, erase, then reprogram to avoid watchdog timeouts during field updates.
Recommended
Set-Top Box and Consumer Electronics Boot Memory
Set-top boxes, routers, and smart-home hubs store bootloader and firmware in SPI NOR flash, and the M25P32-VMW3GB's 32 Mbit capacity plus 75 MHz interface make boot times acceptable for consumer expectations. The SPI bus minimizes pin count on crowded main boards, and the wide-body 8-SOIC footprint is inexpensive to assemble. Software block protection prevents accidental corruption of the immutable boot region while allowing over-the-air updates to application sectors. Designers should budget a bulk-erase strategy: a full-chip BULK ERASE is slower than parallel sector erases, so update managers typically erase only changed sectors to minimize downtime during firmware upgrades.
Recommended
Networking Equipment Parameter Storage
Routers, switches, and optical modules use SPI NOR flash for MAC addresses, board serials, PHY configuration, and mini-OS boot code. The M25P32-VMW3GB's 64 sectors map naturally onto configuration slots with wear-leveling at sector granularity, and hardware /WP write protection can lock factory data permanently. The 3.0-3.6 V supply matches standard networking logic rails, and SPI modes 0/3 ensure compatibility with any CPU or CPLD bus master. At 75 MHz, a full 4-Mbyte image read completes in well under a second, enabling fast redundant-controller synchronization. Keep the device on a dedicated SPI chip select to isolate bus contention from management traffic.
Recommended
Battery-Powered and Deep-Sleep IoT Devices
IoT endpoints, metering nodes, and portable instruments combine an MCU with serial NOR flash for firmware and logged data. The M25P32-VMW3GB's deep power-down mode cuts standby current to roughly 1 uA per family datasheet figures, preserving battery life between wakeups, while 75 MHz FAST_READ lets the host retrieve data quickly during short active windows - a fast-read/quick-sleep duty cycle that minimizes average current. The 8-SOIC wide-body package is hand-assemblable for prototyping yet reel-compatible for volume. Designers should add a pull-up on /HOLD and gate the SPI clock so the flash never receives activity while the host sleeps, preventing accidental wake-up current.
Recommended
Recommended Products Summary
Engineering reference data for M25P32-VMW3GB β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M25P32-VMW6TG | M25P32-VMW6GBA | M25P32-VMW3TPB | AT25SF321B-SHB-T |
|---|---|---|---|---|---|
| Package | 8-SOIC wide-body (VMW, 208 mil) | 8-SOIC wide-body - same | 8-SOIC wide-body - same | 8-SOIC wide-body - same | 8-SOIC wide-body (208 mil) - same footprint |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Renesas Electronics (Adesto) |
| Density | 32 Mbit (4M x 8) | 32 Mbit | 32 Mbit | 32 Mbit | 32 Mbit |
| Max SPI Clock | 75 MHz | [DATA_NEEDED] | [DATA_NEEDED] | 75 MHz | 85 MHz (FAST_READ) |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 2.7 V to 3.6 V |
| Sector Architecture | 64 x 64 Kbytes | 64 x 64 Kbytes | 64 x 64 Kbytes | 64 x 64 Kbytes | 4-Kbyte sub-sectors + 64-Kbyte sectors |
| AEC-Q100 Qualification | Yes (automotive) | [DATA_NEEDED] | [DATA_NEEDED] | Yes (family) [DATA_NEEDED: exact grade] | [DATA_NEEDED] |
| Lifecycle Status | EOL (last-time-buy inventory) | EOL | EOL | EOL | Active (recommended successor) |
Key Differentiators
- Automotive AEC-Q100 qualification (vs AT25SF321B-SHB-T)
- 75 MHz FAST_READ performance (vs M25P32-VMW6TG)
- Uniform 64-Kbyte sector architecture (vs AT25SF321B-SHB-T)
- Long-term supply security is the trade-off (vs AT25SF321B-SHB-T)
Design Notes
At the 75 MHz FAST_READ rate, treat the SPI bus as a transmission line problem: keep SCK and DO traces under ~10 cm, route them over a continuous ground plane, and add 22-33 ohm series resistors near the clock driver to damp ringing. If your layout cannot guarantee short traces, clock the interface at 33 MHz where FAST_READ timing margins are far more forgiving, or fall back to standard READ. Validate with an oscilloscope at the flash side, not just at the host.
Always pull /HOLD and /WP up to VCC (10k resistors are typical) unless actively used - a floating /HOLD can cause sporadic bus stalls, and a floating /WP may leave hardware protection in an undefined state. Respect the write-enable (WREN) command before every program or erase operation; the device self-clears WEL after each operation, which is a common cause of 'flash refuses to write' bugs in first-time drivers.
Use the DEEP POWER-DOWN (DPD) instruction for battery applications: entering DPD via command B9h and releasing via a dedicated CS toggle sequence reduces standby current to approximately 1 uA per family datasheet, versus tens of microamps in standby. Allow the release-to-again-ready delay (specified in the datasheet, on the order of tens of microseconds) before issuing the first command after DPD exit, or your initial READ may fail intermittently.
Because the M25P32 family is EOL per the Renesas/Micron conversion guide, add the AT25SF321B (Renesas) as a validated second source now rather than at end-of-project. The parts share the 8-SOIC footprint and core command set, but verify status-register bit definitions and deep-power-down behavior in your firmware abstraction layer so the swap is a build-time change, not a redesign.
Compliance Information
AEC-Q100 automotive qualification stated in distributor parametric listings (datasheets.com: 'automotive aec-q100'). RoHS/REACH status not stated in provided data - confirm on the Micron part catalog page.
