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Microchip Technology SST25PF040C-40V/SN18GVAO
- Part No.:
- SST25PF040C-40V/SN18GVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25PF040C-40V/SN18GVAO.pdf
- Description:
- IC FLASH 4MBIT SPI 40MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,421
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Product details
Overview
SST25PF040C-40V/SN18GVAO from Microchip Technology is a 4 Mbit SPI serial flash memory IC with SuperFlash technology, supporting single-supply 2.3–3.6 V operation, 40 MHz high-speed read (via Fast-Read Dual I/O), and uniform 4 KByte sector/64 KByte block erase architecture - deployed in automotive and industrial firmware storage applications.
For engineers reviewing the SST25PF040C-40V/SN18GVAO datasheet, SST25PF040C-40V/SN18GVAO pinout, SST25PF040C-40V/SN18GVAO application, or SST25PF040C-40V/SN18GVAO equivalent, this page delivers verified pin functions, dual-I/O timing behavior, AEC-Q100-qualified temperature range (-40°C to +125°C), endurance (100,000 cycles), and real-world erase/program performance metrics.
Technical Context
The SST25PF040C-40V/SN18GVAO implements a four-wire SPI interface compliant with Mode 0 and Mode 3, using CE#, SCK, SI/SIO0, and SO/SIO1 pins for command/address/data transfer. Its split-gate SuperFlash cell enables lower program current and faster erase times versus conventional NOR flash.
It supports three dual-output read modes - Fast-Read Dual-Output (3BH), Fast-Read Dual I/O (BBH), and High-Speed Read (0BH) - all operating up to 40 MHz, with address and data transferred on both edges of SCK in dual-I/O mode to double effective throughput.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte), organized as 128 × 4 KByte sectors and 8 × 64 KByte overlay blocks |
| Supply Voltage | 2.3–3.6 V - enables direct interfacing with 3.3 V logic without level shifting |
| Max Clock Frequency | 40 MHz - achievable in Fast-Read Dual I/O mode, delivering ~10 MB/s effective read bandwidth |
| Endurance | 100,000 program/erase cycles - sufficient for frequent firmware update or logging use cases |
| Data Retention | >20 years at +85°C - validated for long-life automotive and industrial deployments |
| Active Read Current | 5 mA typical at 40 MHz - low power consumption critical for battery-backed or energy-constrained systems |
| Erase Times | Sector-Erase: 40 ms typ; Block-Erase: 80 ms typ; Chip-Erase: 250 ms typ - deterministic timing for real-time system scheduling |
Pinout & Package
Package: 8-contact USON (2 mm × 3 mm), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence; deassertion places device in standby (5 µA) |
| SIO0 / SI | Serial Data Input / Dual I/O Line 0 | Primary input for commands/addresses/data; in Dual I/O mode, carries even-address bits and even-data bits (D6,D4,D2,D0) |
| SIO1 / SO | Serial Data Output / Dual I/O Line 1 | Primary output for read data; in Dual I/O mode, carries odd-address bits and odd-data bits (D7,D5,D3,D1) |
| SCK | Serial Clock | Input timing reference; rising edge latches inputs, falling edge outputs data; supports Mode 0 (SCK idle low) and Mode 3 (SCK idle high) |
| WP# | Write Protect | Enables lock-down of status register BP bits; when low, BPL bit controls write-protection immutability |
| HOLD# | Hold | Suspends ongoing SPI transaction without deselecting device; allows host to service higher-priority interrupts |
| VDD | Power Supply | 2.3–3.6 V supply input; decoupling capacitor required per layout guidelines |
| VSS | Ground | Reference return path; must be low-impedance connection to minimize noise coupling into SPI signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual I/O Read Support | Enables 40 MHz operation with BBH instruction, doubling data rate vs standard SPI by using SIO0/SIO1 for simultaneous address/data transfer |
| Flexible Erase Granularity | Independent 4 KByte sector and 64 KByte block erase - permits fine-grained firmware partitioning (e.g., bootloader vs app image) |
| Hardware Write Protection | WP# pin + software-controlled BP0–BP2/TB/BPL bits allow hierarchical, field-upgradeable protection of boot code or calibration data |
| Ultra-Low Standby Power | 3 µA in power-down mode - essential for always-on automotive modules meeting ISO 11898-2 quiescent current budgets |
| AEC-Q100 Qualification | Qualified for Automotive Grade 1 (−40°C to +125°C), including HTOL, TC, and ESD testing - suitable for engine control, ADAS, and infotainment |
Applications
| Automotive Instrument Cluster | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing calibrated display assets, gauge configurations, and over-the-air (OTA) update staging area in a CAN-connected digital dashboard. IC Role / Device Role / Timing Role: Nonvolatile firmware and asset memory with fast dual-I/O read to support sub-100 ms boot time and seamless UI transitions. Use Value: 40 MHz Fast-Read Dual I/O reduces boot latency by >35% vs legacy 25 MHz SPI flash; AEC-Q100 qualification ensures reliability across thermal cycling. |
Use Scenario: Holding ladder logic programs, I/O mapping tables, and configuration parameters in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Field-upgradable program memory with hardware WP# and software block protection to prevent accidental corruption during maintenance. Use Value: 100,000-cycle endurance and >20-year data retention guarantee operational integrity over 15+ year PLC service life. |
| Medical Infusion Pump Bootloader | Smart Energy Meter Firmware |
Use Scenario: Securely storing signed bootloader code and cryptographic keys in Class II medical devices requiring FDA 21 CFR Part 11 compliance. IC Role / Device Role / Timing Role: Trusted boot memory with write-lock capability via WP# and BPL bit to enforce immutable root-of-trust. Use Value: Hardware-enforced lockdown prevents unauthorized firmware modification; 3 µA power-down current extends battery runtime during standby. |
Use Scenario: Hosting metrology firmware, tariff tables, and communication stack (DLMS/COSEM) in ANSI C12.22-compliant utility meters. IC Role / Device Role / Timing Role: High-reliability data and code storage operating continuously at +85°C inside sealed meter enclosures. Use Value: Extended temperature rating (−40°C to +125°C) and 20-year retention ensure accuracy and compliance across full product lifecycle. |
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 | 4 Mbit, 1.65–1.95 V or 2.7–3.6 V dual supply; supports Quad SPI; 100,000 cycles; 20-year retention | Lacks AEC-Q100 qualification; no HOLD# pin; requires separate voltage rail for 1.8 V operation | Preferred where Quad SPI bandwidth >40 MHz is needed and automotive qualification is not required |
| Cypress S25FL004K | 4 Mbit, 2.7–3.6 V; supports Dual/Quad SPI; 100,000 cycles; 20-year retention; includes security registers | No HOLD# pin; not AEC-Q100 qualified; larger 8-SOIC footprint (3.9 mm × 4.9 mm) vs USON (2 mm × 3 mm) | Selected when integrated security features (secure OTP, volatile/non-volatile locks) are mandatory |
Compared with W25Q40EW and S25FL004K, the SST25PF040C-40V/SN18GVAO uniquely combines AEC-Q100 qualification, HOLD# functionality, ultra-compact USON packaging, and guaranteed 40 MHz dual-I/O performance - making it optimal for space-constrained, safety-critical automotive and industrial designs.
Availability
SST25PF040C-40V/SN18GVAO is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLCs, medical infusion pump bootloaders, and smart energy meter firmware requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SST25PF040C-40V/SN18GVAO 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded control applications.
The SST25PF040C-40V/SN18GVAO belongs to Microchip's Serial Flash 25 Series, designed specifically for cost-sensitive, high-reliability firmware and data storage in automotive, industrial, and medical systems demanding AEC-Q100 compliance and low-power operation.
FAQ
What is the maximum operating frequency of SST25PF040C-40V/SN18GVAO in Fast-Read Dual I/O mode?
The SST25PF040C-40V/SN18GVAO supports up to 40 MHz in Fast-Read Dual I/O (BBH) mode, enabling effective read bandwidth of approximately 10 MB/s. This is achieved by transferring address bits on both SIO0 and SIO1 during the same clock cycle, confirmed in DS20005397E Section 5.4 and Figure 5-4. The 40 MHz rating applies only to Fast-Read Dual I/O and High-Speed Read instructions - standard Read (03H) is limited to 25 MHz.
Does SST25PF040C-40V/SN18GVAO support AEC-Q100 qualification, and what grade does it meet?
Yes, the SST25PF040C-40V/SN18GVAO is AEC-Q100 qualified per the datasheet (DS20005397E, page 1), meeting Grade 1 requirements for operation from −40°C to +125°C. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling, and ESD - confirming suitability for under-hood automotive applications such as engine control units and ADAS sensors.
How does the HOLD# pin function during an active SPI transaction in SST25PF040C-40V/SN18GVAO?
In SST25PF040C-40V/SN18GVAO, the HOLD# pin suspends an ongoing SPI sequence without deselecting the device: when HOLD# goes low while CE# is active and SCK is low, the device enters hold mode, placing SO in high-impedance while SI and SCK remain functional. Communication resumes upon rising edge of HOLD# synchronized with SCK low, as defined in Section 4.0.1 and Figure 4-2 of DS20005397E.
What are the supported erase granularities for SST25PF040C-40V/SN18GVAO, and how are they implemented?
The SST25PF040C-40V/SN18GVAO supports three erase types: uniform 4 KByte sectors (128 total), 64 KByte overlay blocks (8 total), and full-chip erase. Sector and block erase are executed via dedicated opcodes (20H/D7H and D8H), with address bits AMS-A12 or AMS-A16 selecting the target region. All erase operations are self-timed and report completion via BUSY bit polling, as specified in Sections 5.6 and 5.7 of DS20005397E.
Can SST25PF040C-40V/SN18GVAO be used with 1.8 V I/O interfaces?
No, SST25PF040C-40V/SN18GVAO operates exclusively at 2.3–3.6 V and is not compatible with 1.8 V logic levels. Its input thresholds (VIL/VIH) and output drive strength are specified for 3.3 V systems. Interfacing with 1.8 V controllers requires level translation - unlike Winbond W25Q40EW, which offers dual-voltage support (1.65–1.95 V or 2.7–3.6 V).
SST25PF040C-40V/SN18GVAO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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-SOIC
SST25PF040C-40V/SN18GVAO FAQ
1.How can I place an order for SST25PF040C-40V/SN18GVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25PF040C-40V/SN18GVAO 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/SN18GVAO reliable?
The price and inventory of SST25PF040C-40V/SN18GVAO 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/SN18GVAO is usually 5 days.
3.What payment methods are accepted for SST25PF040C-40V/SN18GVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25PF040C-40V/SN18GVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25PF040C-40V/SN18GVAO?
SST25PF040C-40V/SN18GVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25PF040C-40V/SN18GVAO 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/SN18GVAO?
For technical support, including SST25PF040C-40V/SN18GVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25PF040C-40V/SN18GVAO requirements.
6.How does Aetrix verify that SST25PF040C-40V/SN18GVAO is sourced from the original manufacturer or authorized distributors?
All SST25PF040C-40V/SN18GVAO 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/SN18GVAO meets industry standards.
7.What is the process for return or replacement of SST25PF040C-40V/SN18GVAO?
All SST25PF040C-40V/SN18GVAO units undergo pre-shipment inspection (PSI). If there is an issue with SST25PF040C-40V/SN18GVAO, 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/SN18GVAO part is unused and in its original packaging.
Return procedure for SST25PF040C-40V/SN18GVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25PF040C-40V/SN18GVAO Tags
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