M25P40-VMN3TPB - 4Mb SPI NOR Flash 75MHz | Micron
MPN: M25P40-VMN3TPB β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.2 | $1.20 |
| 10 | $1.05 | $10.50 |
| 100 | $0.88 | $88.00 |
| 500 | $0.76 | $380.00 |
| 1,000 | $0.64 | $640.00 |
Drop-in alternatives for M25P40-VMN3TPB 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:
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View Datasheet βM25P40-VMN3TPB Maximum Ratings & Electrical Characteristics
| Memory Type | FLASH - NOR |
| Memory Size | 4 Mbit (512K x 8) |
| Interface | SPI Serial |
| Max Clock Frequency | 75 MHz |
| Supply Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +125C (TA) |
| Package | 8-SOIC (3.90 mm width) |
| Mounting Type | Surface Mount (SMD/SMT) |
| Organization | 512K x 8 |
| Density | 4194 kbits |
| Access Time | 15 ns |
| Voltage Range Class | 2.5V/3V/3.3V |
| Write Protection | Hardware (W#) and software status-register protection |
| HOLD Function | Yes (HOLD# pin) |
| Production Status | Full Production |
| Packaging | Tape & Reel (TR) |
| Automotive Qualification | Yes (automotive temperature range) |
M25P40-VMN3TPB Pin Configuration
| Pin 1 | S# β Chip select, active low |
| Pin 2 | Q β Serial data output (data to host) |
| Pin 3 | W# β Write protect, active low |
| Pin 4 | VSS β Ground |
| Pin 5 | D β Serial data input (data from host) |
| Pin 6 | C β Serial clock |
| Pin 7 | HOLD# β Hold, active low (suspends serial communication) |
| Pin 8 | VCC β Power supply, 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-VMN3TPB is suitable for 6 applications: Automotive ECU Code Storage, FPGA Configuration Storage, Microcontroller Boot Memory, Industrial Automation Parameter Storage, Networking Equipment Boot Firmware, Smart Metering and Consumer Appliances.
Automotive ECU Code Storage
The M25P40-VMN3TPB is purpose-built for automotive electronic control units requiring nonvolatile code storage, thanks to its -40C to +125C automotive temperature range and Micron automotive qualification flow. Its 4 Mbit (512K x 8) density holds typical ECU firmware images, while the 75 MHz SPI bus supports fast boot reads that reduce crank-to-run startup latency. Placed on the microcontroller QSPI bus with S# driven by a dedicated chip-select GPIO and HOLD#/W# pulled up through 10 k ohm resistors, the device provides reliable power-on code fetch. The 2.3 V to 3.6 V single supply connects directly to the standard 3.3 V or 5 V-derived automotive rail through a local regulator, and hardware write protection via W# guards calibration data against corruption during voltage transients such as load dump.
Recommended
FPGA Configuration Storage
In FPGA systems the M25P40-VMN3TPB serves as the configuration bitstream memory, loading the fabric at power-up over the dedicated configuration SPI interface. A mid-size FPGA bitstream commonly fits within 4 Mbit, and the 75 MHz maximum clock keeps configuration time to a few milliseconds, meeting typical reset-to-functional requirements. The device connects with its C pin to the FPGA CCLK output, D to FPGA data-out, and Q to FPGA data-in, with S# asserted by the FPGA done/config logic. The 2.3 V to 3.6 V supply range matches common 3.3 V I/O banks, and the 8-SOIC 3.90 mm footprint fits dense boards. Software write protection in the status register prevents accidental bitstream corruption, while the M25P80/M25P16 same-footprint variants provide a growth path if the design migrates to a larger FPGA.
Recommended
Microcontroller Boot Memory
For MCU platforms lacking sufficient internal Flash, the M25P40-VMN3TPB provides external boot and application storage over a standard QSPI/SPI peripheral. The 512K x 8 organization suits 32-bit MCU images with room for logging data, and execute-in-place (XIP) reads at up to 75 MHz avoid costly full-image RAM copies. The 15 ns access time specification and SPI-compatible command set integrate cleanly with standard MCU Flash drivers, and the 2.3 V to 3.6 V supply matches typical 3.3 V microcontroller rails without level shifting. Designers should place the device within a few centimeters of the MCU, series-terminate the clock line, and pull HOLD# and W# high with 10 k ohm resistors so bus idle states never leave the memory suspended or unprotected during reset sequences and brownout events.
Recommended
Industrial Automation Parameter Storage
Industrial controllers, motor drives, and PLC I/O modules use the M25P40-VMN3TPB to persist calibration constants, recipe data, and event logs across power cycles. The -40C to +125C rating covers unconditioned cabinets near drives and furnaces, while hardware W# write protection lets the system lock calibration sectors in the field. Page program and sector erase operations allow frequent parameter updates, and the automotive-qualified supply tolerance of 2.3 V to 3.6 V rides through supply sag on noisy factory floors. Firmware should implement power-loss tolerance by validating a CRC after each write, since the standard SPI page program is not atomic against brownout. The 8-SOIC package mounts on standard footprint and is stocking-compatible with M25P80/M25P16 variants for product families sharing one PCB.
Recommended
Networking Equipment Boot Firmware
Routers, switches, and embedded gateways store boot loader and secondary firmware images in the M25P40-VMN3TPB. A dual-image (A/B) scheme fits comfortably in 4 Mbit for compact bootloaders, and the 75 MHz SPI read speed shortens POST and boot decisions. The device interfaces to the network SoC standard SPI controller with S#, C, D, and Q signals; 33 ohm series resistors on clock and data lines control ringing on longer board traces common in layered switch boards. The 2.3 V to 3.6 V supply accepts the common 3.3 V auxiliary rail, and HOLD# permits the CPU to service interrupts mid-read without re-sending commands. Hardware and software write protection together secure the golden image against malicious or accidental overwrite.
Recommended
Smart Metering and Consumer Appliances
Smart meters, white goods, and connected appliances need compact, low-cost nonvolatile storage for usage logs, firmware, and user settings. The M25P40-VMN3TPB delivers 4 Mbit in an 8-SOIC package that minimizes PCB area and assembly cost, with the -40C to +125C range covering unconditioned outdoor meter enclosures and kitchen environments. Its 2.3 V to 3.6 V single supply pairs with battery-backed or mains-derived 3.3 V rails, and low standby current between SPI transactions supports always-on metering products. The JEDEC-standard M25P command set keeps firmware portable across the family, and the same-footprint M25P10-A and M25P80 options let one PCB layout span cost-optimized and feature-rich product tiers, simplifying procurement and manufacturing test coverage across the product line.
Recommended
Recommended Products Summary
Engineering reference data for M25P40-VMN3TPB β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | M25P40-VMN3PB | M25P40-VMN6TPB | M25P80-VMN3TPB | M25P16-VMN3TPB |
|---|---|---|---|---|---|
| Package | 8-SOIC (3.90 mm) | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same | 8-SOIC (3.90 mm) - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Density | 4 Mbit (512K x 8) | 4 Mbit (512K x 8) | 4 Mbit (512K x 8) | 8 Mbit (1M x 8) | 16 Mbit (2M x 8) |
| Max SPI Clock | 75 MHz | 75 MHz | 75 MHz | 75 MHz | 75 MHz |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +125C (automotive) | -40C to +125C (automotive) | -40C to +85C | -40C to +125C (automotive) | -40C to +125C (automotive) |
| Interface / Command Set | SPI, M25P standard commands | SPI, M25P standard commands | SPI, M25P standard commands | SPI, M25P standard commands | SPI, M25P standard commands |
| Pinout | S#, Q, W#, VSS, D, C, HOLD#, VCC | Identical (pin-to-pin) | Identical (pin-to-pin) | Identical (pin-to-pin) | Identical (pin-to-pin) |
Key Differentiators
- Automotive -40C to +125C temperature range (vs M25P40-VMN6TPB)
- Same-footprint capacity growth path (vs M25P80-VMN3TPB)
- Cost and erase-time optimization (vs M25P16-VMN3TPB)
Design Notes
At the maximum 75 MHz SPI clock, treat the memory bus as a moderate-speed transmission line: keep the total clock-to-device trace under ~10 cm, route clock away from switching power nodes, and add 22-33 ohm series termination on the clock and data lines if traces exceed a few centimeters. Verify setup/hold timing against the 15 ns access time at your supply corner (2.3 V is the worst case for output drive). Reducing the clock to 50 MHz on long or daisy-chained buses is a low-cost reliability margin.
Decouple VCC (pin 8) with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a bulk 4.7 uF per device bank. Ensure VCC ramps monotonically and add a brownout supervisor on the host so erase/program commands are never issued below the 2.3 V minimum rail - a write corrupted during brownout can disable software write protection and corrupt the boot image. Tie HOLD# and W# to VCC through 10 k ohm pull-ups so floating-pin noise during power-up cannot suspend the bus or unlock protection.
Micron has announced EOL for low-density M25P products, so designs starting today should qualify a second source: the pin-compatible M25P80/M25P16 (higher density, same footprint), or cross-brand equivalents per the Renesas/Adesto M25P conversion guide. Verify JEDEC device ID reads in your boot code before production, and reserve a GPIO-controlled W# line (not hard-wired) so field firmware can toggle hardware protection. Note that M25P40-VMN6 (the -40C to +85C variant) is not a valid substitute in automotive -125C sockets despite the identical footprint.
Compliance Information
Automotive temperature-grade product from Micron; RoHS/lead-free status reflects standard modern Micron serial NOR production. REACH and halogen-free status not stated in provided data.
