M25P40-VMN3PB - 4Mbit SPI NOR Flash 75MHz | Micron
MPN: M25P40-VMN3PB β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.89 | $0.89 |
| 10 | $0.82 | $8.20 |
| 100 | $0.74 | $74.00 |
| 500 | $0.68 | $340.00 |
| 1,000 | $0.62 | $620.00 |
Drop-in alternatives for M25P40-VMN3PB 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:
M25P40-VMN3TPB
β Drop-Inβ In Stock
$0.64 / Unit
View Datasheet βM25P40-VMN3TPB
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.64 / Unit
View Datasheet βM25P40-VMN6TP
β Drop-Inπ Reference alternative (not in catalog)
M25P40-VMN6TPB
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
W25X40LSSI
β Drop-Inπ Reference alternative (not in catalog)
M25P40-VMN3PB Maximum Ratings & Electrical Characteristics
| Memory Type | FLASH - NOR |
| Memory Size | 4 Mbit (512K x 8) |
| Organization | 512K x 8 (x1 serial) |
| Maximum Clock Frequency | 75 MHz |
| Interface | SPI Serial |
| Supply Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +125C |
| Package / Case | 8-SOIC (3.90 mm width) |
| Mounting Type | Surface Mount |
| Packaging | Tube |
| Temperature Grade | Automotive |
| Product Longevity Program | Yes (start date 5/4/2011) |
| Write Protection | Advanced write-protection mechanisms |
| HOLD Pin | Yes |
| Technology | CMOS, SLC NOR |
M25P40-VMN3PB Pin Configuration
| Pin 1 | S# β Chip Select (active low) |
| Pin 2 | Q β Serial Data Output (DQ1) |
| Pin 3 | WP# β Write Protect (active low) |
| Pin 4 | VSS β Ground |
| Pin 5 | D β Serial Data Input (DQ0) |
| Pin 6 | C β Serial Clock |
| Pin 7 | HOLD# β Hold (pause serial transfer, active low) |
| Pin 8 | VCC β Supply voltage, 2.3 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
M25P40-VMN3PB is suitable for 6 applications: FPGA/CPLD Configuration Storage, Industrial Controller Boot Firmware, Set-Top Box and Consumer Electronics Firmware, Networking Line Card Code Storage, Automotive Body and Comfort Modules, Test and Measurement Instrument Calibration Storage.
FPGA/CPLD Configuration Storage
The M25P40-VMN3PB stores configuration bitstreams for FPGAs and CPLDs that load from SPI Flash at power-up. Its 4 Mbit (512 KB) density comfortably holds mid-range CPLD and small-FPGA images, and the 75 MHz FAST_READ command minimizes configuration time compared with legacy 20-33 MHz parts. The -40C to +125C range ensures reliable bitstream availability across industrial temperature extremes, and the advanced write-protection mechanisms guard the golden image against corruption during field firmware updates. Placed on the dedicated SPI configuration bus with S# driven by the FPGA's config-done logic, the device adds no switching noise concerns; the main trade-off is the need to keep a programmer image of the bitstream since the part is EOL and re-flashing during production relies on existing stock.
Recommended
Industrial Controller Boot Firmware
In industrial PLCs, motor drives, and process controllers, the M25P40-VMN3PB holds boot code and application firmware for host microcontrollers. The 2.3 V-3.6 V supply range matches both 3.3 V and 2.5 V logic rails, while the -40C to +125C operating range covers unheated cabinet installations and motor-adjacent electronics. Its 64 Kbyte-sector erasability lets firmware store parameters in a dedicated sector without disturbing boot code, and HOLD# allows the MCU to suspend a read transaction to service a higher-priority SPI peripheral without restarting the transfer. Because the part is under Micron's Product Longevity Program but EOL-announced, new controller designs should dual-qualify an active alternative listed on this page. Total read throughput at 75 MHz supports fast boot and quick field updates over a CAN or Modbus maintenance channel.
Recommended
Set-Top Box and Consumer Electronics Firmware
Set-top boxes, smart TVs, and networking appliances traditionally use low-density SPI NOR for the boot loader and system settings while the OS resides on larger NAND. The M25P40-VMN3PB's 4 Mbit capacity fits a compact U-Boot-style loader plus environment variables, and SPI mode 0/3 compatibility simplifies integration with common SoC boot ROMs. The 75 MHz interface keeps cold-boot time low: an entire 512 KB image reads in under roughly 60 ms at maximum clock. The WP# pin allows the bootloader region to be hardware-protected once production firmware is finalized, defeating accidental or malicious rewrites of the boot image. Its EOL status is the main drawback for new consumer designs; use the remaining tube-packaged stock for service and repair builds and transition new BOMs to an active alternative.
Recommended
Networking Line Card Code Storage
Line cards, switches, and routers store per-slot firmware, MAC addresses, and board serial data in SPI NOR devices on the card itself. The M25P40-VMN3PB's serial x8 interface minimizes PCB routing compared with parallel Flash, freeing pins on dense cards, and its HOLD# pin allows sharing the SPI bus with a BMC or EEPROM without transfer loss. The advanced write-protection mechanisms secure factory-programmed identity data against overwrites during remote field upgrades. Automotive temperature rating supports telecom chassis environments that routinely exceed +85C near hot-swap power stages. Designers should note the 2.3 V-3.6 V supply tolerance eases integration with 3.3 V I/O rings. Since the part is EOL, maintain a service stock of tube-packaged units and qualify the Adesto FUSION conversion path recommended in the Renesas-hosted conversion guide.
Recommended
Automotive Body and Comfort Modules
Body-control modules, window lifts, and comfort ECUs operate across -40C to +125C, matching the M25P40-VMN3PB's specified range and its AUTOMOTIVE temperature-grade classification in distributor data. The 4 Mbit array stores calibration tables, DTC history, and diagnostic firmware, while the SPI interface connects cleanly to automotive MCUs without wide parallel buses that add EMI and connector pin count. Write-protection prevents accidental corruption of calibration data during voltage-dip events common in 12 V automotive rails. The Product Longevity Program enrollment (since 5/4/2011) supports the long service-lifetime commitments typical of vehicle programs. Note that no AEC-Q100 qualification claim appears in the verified data, so confirm OEM qualification requirements independently, and plan the transition to an active alternative given the announced M25P-series EOL.
Recommended
Test and Measurement Instrument Calibration Storage
DMMs, oscilloscope front-ends, and sensor transmitters store factory calibration constants that must survive power cycles for the instrument's lifetime. The M25P40-VMN3PB provides 512 KB of nonvolatile storage - far more than a serial EEPROM - allowing multiple firmware images plus calibration sets on one device. Its 256-byte-granular page programming (per family architecture) lets firmware update a single calibration record without a full-sector rewrite, and the write-protection mechanisms can lock the calibration sector permanently after factory setup. The 2.3 V floor suits battery-powered handheld instruments on 3 V rails. Designers must manage erase-before-write sequencing in firmware to avoid wearing sectors unevenly. Given the EOL status, handheld-instrument makers should migrate service spares to the alternatives listed on this page before stock depletes.
Recommended
Recommended Products Summary
Engineering reference data for M25P40-VMN3PB β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M25P40-VMN3TPB | M25P40-VMN6TP | W25X40LSSI |
|---|---|---|---|---|
| Brand | Micron Technology | Micron Technology | Micron Technology | Winbond |
| Package | SOIC-8 (3.90 mm) | SOIC-8 (3.90 mm) - same | SOIC-8 (3.90 mm) - same | SOIC-8 (208 mil) - same footprint |
| Density | 4 Mbit (512K x 8) | 4 Mbit (512K x 8) | 4 Mbit (512K x 8) | 4 Mbit (512K x 8) |
| Interface | SPI Serial | SPI Serial | SPI Serial | SPI Serial |
| Max Clock Frequency | 75 MHz | 75 MHz | 75 MHz | [DATA_NEEDED] |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Operating Temperature | -40C to +125C | -40C to +125C | [DATA_NEEDED] | [DATA_NEEDED] |
| Packaging | Tube | Tape & Reel | Tape & Reel | [DATA_NEEDED] |
| Lifecycle Status | Obsolete (EOL announced) | Obsolete (EOL announced) | Obsolete (EOL announced) | Active |
Key Differentiators
- Widest supply tolerance in the M25P40 ordering matrix (vs M25P40-VMN6TP)
- Automotive temperature grade with longevity program (vs W25X40LSSI)
- Identical die availability in tape-and-reel (vs M25P40-VMN3TPB)
Design Notes
Micron has announced EOL for all low-density M25P products, including the M25P40 family. Do not start new production designs on this MPN without a qualified second source. The Renesas-hosted 'Conversion Guide Micron EOL M25P Products' identifies the Adesto FUSION NOR Flash family as a highly compatible replacement for the M25P SPI series; same-footprint same-family variants and the Winbond W25X40LSSI are also listed on this page. Budget firmware effort for status-register bit-definition differences when moving cross-brand.
Decouple VCC (pin 8) with a 100 nF ceramic capacitor placed within a few millimeters of the pin, plus bulk capacitance shared on the 3.3 V rail. The 2.3 V minimum supply means designs using low-drop regulators must verify the rail never sags below 2.3 V during Flash erase operations, when supply current peaks. On 2.5 V rail systems, confirm erase/program timing margins against the datasheet's 2.5 V AC characteristics before finalizing firmware update loops.
At the 75 MHz FAST_READ clock, treat S# (pin 1) and C (pin 6) as transmission-line-aware traces: keep clock length under roughly 10 cm, series-terminate if the trace exceeds that, and avoid routing the clock adjacent to switching power rails. Ensure WP# (pin 3) and HOLD# (pin 7) are not left floating on boards where firmware does not actively drive them - pull WP# high for writes and tie HOLD# high via the host GPIO to avoid accidental bus pauses and write-protect state changes.
Compliance Information
No explicit RoHS/REACH/lead-free claims appear in the verified web data for this MPN; the part carries an automotive temperature-grade classification per distributor data. Verify compliance certificates with Micron documentation before procurement.
