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Microchip Technology SST25PF040C-40V/MF18GVAO
- Part No.:
- SST25PF040C-40V/MF18GVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST25PF040C-40V/MF18GVAO.pdf
- Description:
- IC FLASH 4MBIT SPI 40MHZ 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,937
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Product details
Overview
SST25PF040C-40V/MF18GVAO from Microchip Technology is a 4 Mbit SPI serial flash memory IC designed for embedded code storage and data logging in space-constrained systems. It operates from a single 2.3–3.6 V supply, supports 40 MHz high-speed read via Fast-Read Dual I/O (BBH), delivers 256-byte page programming, and features uniform 4 KByte sector and 64 KByte block erase - all with 100,000 write cycles and >20-year data retention.
For engineers reviewing the SST25PF040C-40V/MF18GVAO datasheet, SST25PF040C-40V/MF18GVAO pinout, SST25PF040C-40V/MF18GVAO application, or SST25PF040C-40V/MF18GVAO equivalent, this page provides verified pin functions, real-world timing behavior (Mode 0/3 SPI compatibility), dual-I/O throughput implications, and automotive-grade (-40°C to +125°C) qualification context critical for industrial firmware and boot memory design.
Technical Context
This device implements a four-wire SPI interface with full Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) support, enabling interoperability with diverse microcontroller host interfaces. Its SuperFlash technology uses split-gate cells and thick-oxide tunneling injectors to achieve lower program/erase current and shorter erase times versus conventional NOR flash.
The memory array is organized into 128 × 4 KByte sectors and 8 × 64 KByte overlay blocks, supporting flexible firmware partitioning. Dual I/O operation (SIO0/SIO1) enables simultaneous address input and data output at up to 40 MHz, doubling effective throughput over standard single-I/O reads without increasing clock frequency or pin count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte), sufficient for compact bootloader + configuration storage |
| Supply Voltage | 2.3–3.6 V single supply - compatible with 3.3 V logic rails and low-power MCU domains |
| Max Clock Frequency | 40 MHz for High-Speed Read and Fast-Read Dual I/O - enables ≤100 ns effective access time per byte in dual mode |
| Page Size | 256 bytes - aligns with typical MCU cache line and firmware update granularity |
| Erase Granularity | Uniform 4 KByte sectors and 64 KByte blocks - supports modular firmware updates and secure key partitioning |
| Endurance & Retention | 100,000 program/erase cycles; >20 years data retention at +125°C - validated for automotive AEC-Q100 Grade 1 |
| Operating Temperature | -40°C to +125°C (Extended grade) - qualified for under-hood and industrial control environments |
Pinout & Package
Package: 8-contact USON (2 mm × 3 mm), ultra-compact footprint for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low selection signal; must remain low throughout command sequence; deassertion places device in standby (5 µA) |
| SO/SIO1 | Serial Data Output / Dual I/O Line 1 | Outputs MSB-first data during read; inputs odd address bits (A23, A21, ...) in Dual I/O mode; tri-states during HOLD# |
| WP# | Write Protect | Enables BPL bit lock-down of status register; when low, prevents modification of BP0–BP2, TB, and BPL bits |
| VSS | Ground | Reference return path for all I/O and core circuitry; requires low-impedance connection to system GND plane |
| VDD | Power Supply | 2.3–3.6 V supply input; decoupling capacitor (≥100 nF) required within 1 mm of pin |
| HOLD# | Hold Control | Pauses ongoing SPI transaction without deselecting device; requires synchronized falling edge relative to SCK low state |
| SCK | Serial Clock | Timing reference for all transfers; sampled on rising edge (input), data shifted out on falling edge (output) |
| SI/SIO0 | Serial Data Input / Dual I/O Line 0 | Accepts commands, addresses, and data; inputs even address bits (A22, A20, ...) in Dual I/O mode; shares pin with SO in bidirectional configurations |
Key Features
| Feature | Design Value |
|---|---|
| Fast-Read Dual I/O (BBH) | 40 MHz dual-line read with interleaved address/data transfer - reduces instruction latency by ~40% vs. standard read |
| Flexible Erase Architecture | Independent 4 KByte sector and 64 KByte block erase - enables partial firmware updates without full chip reprogramming |
| Hardware Write Protection | WP# pin controls lock-down of Block-Protection bits (BP0–BP2, TB, BPL) - prevents accidental register corruption during power transients |
| Ultra-Low Standby Current | 3 µA in power-down mode - extends battery life in always-on sensor nodes and IoT endpoints |
| Automotive Qualification | AEC-Q100 Grade 1 certified (-40°C to +125°C) - meets reliability requirements for engine control, ADAS, and infotainment boot memory |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Boot Memory |
|---|---|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic SPI read access during cold start; supports dual-I/O fast read for rapid firmware validation. Use Value: 100,000-cycle endurance ensures field-upgrade capability over 10+ years; -40°C to +125°C rating guarantees operation during thermal cycling in unconditioned enclosures. |
Use Scenario: Holding boot code and safety-critical configuration data in engine control units where failure modes must be mitigated per ISO 26262 ASIL-B requirements. IC Role / Device Role / Timing Role: AEC-Q100 qualified serial flash serving as primary boot source; leverages hardware WP# and status register lock-down to prevent runtime corruption. Use Value: >20-year data retention at +125°C eliminates recalibration drift concerns; 4 KByte sector erase enables secure over-the-air (OTA) patch deployment without full reflash. |
| Medical Device Configuration Storage | Smart Meter Data Logging |
Use Scenario: Retaining user-defined operational parameters and device calibration constants in portable diagnostic equipment subject to frequent power cycling and sterilization cycles. IC Role / Device Role / Timing Role: Low-power configuration store accessed via SPI during initialization; utilizes HOLD# to suspend reads during interrupt-driven sensor sampling. Use Value: 3 µA power-down current extends battery runtime between charges; 256-byte page programming minimizes write time during parameter saves. |
Use Scenario: Recording time-stamped energy consumption metrics in utility smart meters deployed in outdoor cabinets exposed to solar heating and humidity. IC Role / Device Role / Timing Role: High-reliability data logger using 64 KByte block erase to rotate daily log segments; leverages dual-output read for rapid meter reading via PLC or RF interface. Use Value: Uniform 4 KByte sectors allow granular wear leveling across 128 regions; extended temperature range ensures accuracy over seasonal ambient shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q40EW | Same 4 Mbit density, 3.3 V, and 40 MHz max clock; uses standard Quad SPI (QPI) instead of Dual I/O; no HOLD# pin | Lacks hardware hold functionality and AEC-Q100 qualification; suitable for commercial-grade consumer devices only | Select when QPI interface is preferred and automotive qualification is not required |
| Cypress S25FL004K | 4 Mbit, 3.0 V min supply, 50 MHz max clock; supports both SPI and Quad SPI; includes deep power-down mode (1 µA) | Higher speed but narrower voltage range (2.7–3.6 V); lacks explicit AEC-Q100 certification; different status register layout | Choose for higher throughput in non-automotive designs where 2.7 V minimum supply is acceptable |
Compared with SST25PF040C-40V/MF18GVAO, the W25Q40EW omits HOLD# and automotive qualification but offers broader QPI ecosystem support, while the S25FL004K trades AEC-Q100 compliance for faster clock rate and deeper sleep current - making SST25PF040C-40V/MF18GVAO the optimal choice for thermally demanding, safety-conscious embedded systems requiring guaranteed hold functionality and long-term data integrity.
Availability
SST25PF040C-40V/MF18GVAO is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, medical device configuration storage, and smart meter data logging requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for SST25PF040C-40V/MF18GVAO 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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on embedded control and connectivity.
The SST25PF040C-40V/MF18GVAO belongs to Microchip's Serial Flash 25 Series, engineered specifically for reliable, low-power, high-density code and data storage in automotive, industrial, and medical applications demanding AEC-Q100 qualification and extended temperature operation.
FAQ
What is the maximum operating frequency supported by SST25PF040C-40V/MF18GVAO?
The SST25PF040C-40V/MF18GVAO supports up to 40 MHz for High-Speed Read and Fast-Read Dual I/O instructions. Standard Read (03H) is rated to 25 MHz. This 40 MHz capability applies specifically to the 0BH (High-Speed Read), 3BH (Fast-Read Dual-Output), and BBH (Fast-Read Dual I/O) opcodes - all verified in DS20005397E. The device maintains timing compliance across its full -40°C to +125°C operating range.
Does SST25PF040C-40V/MF18GVAO support both SPI Mode 0 and Mode 3?
Yes, SST25PF040C-40V/MF18GVAO explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as confirmed in Section 4.0 of DS20005397E. The device samples SI on the rising edge and drives SO on the falling edge in both modes; the distinction lies only in the idle state of SCK (low in Mode 0, high in Mode 3), ensuring compatibility with diverse host controllers.
What package type is used for SST25PF040C-40V/MF18GVAO?
SST25PF040C-40V/MF18GVAO is packaged in an 8-contact USON (2 mm × 3 mm) - a leadless, ultra-thin, near-chip-scale package optimized for high-density PCB layouts. This matches the "MF18GVAO" suffix per Microchip's packaging nomenclature and is distinct from the SOIC and WDFN variants offered in the same family.
How does the HOLD# function operate in SST25PF040C-40V/MF18GVAO?
In SST25PF040C-40V/MF18GVAO, HOLD# pauses an active SPI transaction without deselecting the device: it activates on the falling edge coincident with SCK low, placing SO in high-impedance while preserving internal state. Resumption requires a rising edge aligned with SCK low. CE# must remain low throughout - if driven high during hold, the device exits to standby mode, requiring full reinitialization.
Is SST25PF040C-40V/MF18GVAO qualified for automotive applications?
Yes, SST25PF040C-40V/MF18GVAO is AEC-Q100 qualified for automotive use (Grade 1, -40°C to +125°C), as stated in the "Temperature Range" section of DS20005397E. This qualification covers stress testing for temperature cycling, humidity, and electrical robustness - making it suitable for engine control, body electronics, and ADAS subsystems where boot memory reliability is critical.
SST25PF040C-40V/MF18GVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 40 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- -
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (5x6)
SST25PF040C-40V/MF18GVAO FAQ
1.How can I place an order for SST25PF040C-40V/MF18GVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25PF040C-40V/MF18GVAO on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SST25PF040C-40V/MF18GVAO reliable?
The price and inventory of SST25PF040C-40V/MF18GVAO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25PF040C-40V/MF18GVAO is usually 5 days.
3.What payment methods are accepted for SST25PF040C-40V/MF18GVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25PF040C-40V/MF18GVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25PF040C-40V/MF18GVAO?
SST25PF040C-40V/MF18GVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25PF040C-40V/MF18GVAO order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SST25PF040C-40V/MF18GVAO?
For technical support, including SST25PF040C-40V/MF18GVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25PF040C-40V/MF18GVAO requirements.
6.How does Aetrix verify that SST25PF040C-40V/MF18GVAO is sourced from the original manufacturer or authorized distributors?
All SST25PF040C-40V/MF18GVAO products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SST25PF040C-40V/MF18GVAO meets industry standards.
7.What is the process for return or replacement of SST25PF040C-40V/MF18GVAO?
All SST25PF040C-40V/MF18GVAO units undergo pre-shipment inspection (PSI). If there is an issue with SST25PF040C-40V/MF18GVAO, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SST25PF040C-40V/MF18GVAO part is unused and in its original packaging.
Return procedure for SST25PF040C-40V/MF18GVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25PF040C-40V/MF18GVAO Tags
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