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Microchip Technology SST25PF040C-40E/SN18GVAO
- Part No.:
- SST25PF040C-40E/SN18GVAO
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25PF040C-40E/SN18GVAO.pdf
- Description:
- IC FLASH 4MBIT SPI 40MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
SST25PF040C-40E/SN18GVAO 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 2.3–3.6V supply, supports 40 MHz high-speed read via Fast-Read Dual I/O (BBH), delivers 256-byte page programming, and features AEC-Q100-qualified industrial-plus temperature range (–40°C to +105°C) in an 8-contact USON (2 mm × 3 mm) package.
For engineers reviewing the SST25PF040C-40E/SN18GVAO datasheet, SST25PF040C-40E/SN18GVAO pinout, SST25PF040C-40E/SN18GVAO application, or SST25PF040C-40E/SN18GVAO equivalent, key selection considerations include dual-I/O timing compliance, sector/block erase granularity (4 KB/64 KB), software/hardware write protection coordination, and SuperFlash reliability metrics (100K cycles, >20-year retention).
Technical Context
The SST25PF040C-40E/SN18GVAO implements a four-wire SPI interface compatible with Mode 0 and Mode 3 clock polarity/phasing, enabling interoperability with diverse host controllers. Its SuperFlash technology uses split-gate cells and thick-oxide tunneling to achieve lower program/erase current and shorter erase times versus conventional NOR flash.
It supports three concurrent read modes-standard Read (03H, 25 MHz), High-Speed Read (0BH, 40 MHz), and dual-line Fast-Read variants (3BH and BBH, both 40 MHz)-with configurable block-protection bits (BP0–BP2, TB, BPL) and hardware HOLD#/WP# pins for real-time command suspension and write lockdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB), organized as 128 × 4 KB sectors and 8 × 64 KB overlay blocks |
| Supply Voltage | 2.3–3.6V - enables direct interfacing with 3.3V logic without level shifting |
| Max Clock Frequency | 40 MHz - supports high-throughput firmware updates and boot code loading |
| Page Size | 256 bytes - defines minimum programmable unit; partial-page writes are ignored |
| Erase Endurance | 100,000 program/erase cycles - validated for long-life data logging in industrial controllers |
| Data Retention | >20 years at +85°C - ensures firmware integrity across product lifecycle without refresh |
| Operating Temperature | –40°C to +105°C (Industrial Plus) - qualified per AEC-Q100 Grade 2 for automotive ECUs |
Pinout & Package
Package: 8-contact USON (2 mm × 3 mm), RoHS-compliant, moisture-sensitive level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence; drives device into standby when high |
| SO/SIO1 | Serial Output / Dual I/O Line 1 | Outputs odd data bits (D7,D5,D3,D1) during Fast-Read Dual I/O; inputs odd address bits in BBH mode |
| WP# | Write Protect | Enables BPL bit lock-down; when low, prevents modification of BP0–BP2, TB, and BPL status register bits |
| VSS | Ground | Reference return path for all digital and analog circuitry; requires low-impedance PCB connection |
| VDD | Power Supply | 2.3–3.6V input; decoupling capacitor (0.1 µF) required within 5 mm of pin |
| HOLD# | Hold Control | Suspends ongoing SPI transaction without deselecting device; requires SCK low during edge transition |
| SCK | Serial Clock | Timing reference for all SPI transfers; sampled on rising edge for input, data shifted out on falling edge |
| SI/SIO0 | Serial Input / Dual I/O Line 0 | Inputs commands, addresses, and even data bits; outputs even data bits (D6,D4,D2,D0) in dual-I/O modes |
Key Features
| Feature | Design Value |
|---|---|
| Dual I/O Read Support (3BH/BBH) | Enables 40 MHz read throughput using two bidirectional data lines, doubling effective bandwidth over standard SPI |
| Flexible Erase Architecture | Independent 4 KB sector and 64 KB block erase options allow precise wear leveling and partial firmware updates |
| Hardware Write Protection | WP# and HOLD# pins provide deterministic, glitch-immune control over status register lock-down and command suspension |
| SuperFlash Technology | Reduces total energy per erase/program operation via lower current draw and shorter timing - critical for battery-powered devices |
| End-of-Write Detection | Software polling of BUSY bit (Status Register Bit 0) eliminates need for fixed delay timers, improving system responsiveness |
Applications
| Automotive Instrument Clusters | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing calibrated gauge graphics, driver profile settings, and OTA update staging area in digital dashboards. IC Role / Device Role / Timing Role: Nonvolatile code/data storage with AEC-Q100 qualification and 105°C operation for under-hood proximity. Use Value: 40 MHz Fast-Read Dual I/O enables sub-100 ms boot time; 100K endurance supports 10+ years of daily calibration updates. |
Use Scenario: Holding ladder logic firmware, I/O configuration maps, and event logs in programmable logic controllers deployed in factory environments. IC Role / Device Role / Timing Role: Reliable, field-upgradable program memory with hardware write protection to prevent accidental corruption during EMI events. Use Value: Sector-erase granularity allows patching individual function modules without full reflash; >20-year retention guarantees data integrity across maintenance cycles. |
| Medical Diagnostic Device Boot Memory | Smart Energy Meter Data Logger |
Use Scenario: Secure boot image storage for ultrasound processors requiring FDA-compliant firmware traceability and revision control. IC Role / Device Role / Timing Role: SPI-connected primary boot ROM with software-controlled block protection to enforce signed image validation. Use Value: WP#-enabled BPL bit prevents runtime tampering with protection bits; 256-byte page programming enables atomic firmware patch commits. |
Use Scenario: Cyclic storage of voltage/current harmonics, tariff schedules, and outage timestamps in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: High-reliability data logger memory with uniform 4 KB sectors optimized for circular buffer management. Use Value: 5 µA standby current extends battery life in backup power mode; 100K cycle rating supports 20+ years of hourly logging at 100% duty cycle. |
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 W25Q40EWUXIE | Same density (4 Mbit), 1.65–1.95V/2.7–3.6V dual supply; supports Quad SPI (QPI) but not Dual I/O; 30 MHz max clock | Lacks HOLD#/WP# hardware pins; relies on software status register protection only | Choose for QPI host compatibility or ultra-low-voltage operation; avoid if hardware suspend or lock-down is required. |
| Cypress S25FL004K0XMFI011 | 4 Mbit, 2.7–3.6V, 50 MHz Quad SPI; includes SFDP register for auto-configuration; no Dual I/O support | Requires Quad-capable controller; no native support for SST25PF040C's BBH/3BH instruction set | Select when leveraging SFDP-based initialization or needing higher clock rate; verify instruction mapping for legacy firmware porting. |
Compared with W25Q40EWUXIE and S25FL004K0XMFI011, the SST25PF040C-40E/SN18GVAO uniquely combines Dual I/O timing, dedicated HOLD#/WP# pins, and AEC-Q100 Industrial Plus qualification - making it optimal for automotive and industrial designs requiring deterministic hardware control and extended temperature resilience.
Availability
SST25PF040C-40E/SN18GVAO is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLC firmware storage, medical diagnostic device boot memory, and smart energy meter data logging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SST25PF040C-40E/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 company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST25PF040C-40E/SN18GVAO belongs to Microchip's Serial Flash 25 Series, engineered specifically for cost-sensitive, space-constrained embedded systems requiring high reliability, low power, and SPI-compatible code/data storage.
FAQ
What is the maximum operating frequency supported by SST25PF040C-40E/SN18GVAO for high-speed read operations?
The SST25PF040C-40E/SN18GVAO supports up to 40 MHz for High-Speed Read (0BH), Fast-Read Dual-Output (3BH), and Fast-Read Dual I/O (BBH) instructions. This is confirmed in the DS20005397E datasheet Section 5.2–5.4. Standard Read (03H) is limited to 25 MHz. The 40 MHz capability applies only when using the dummy-cycle–enhanced instructions and requires proper signal integrity layout for SCK and I/O lines.
Does SST25PF040C-40E/SN18GVAO support Quad SPI (QSPI) interface mode?
No, the SST25PF040C-40E/SN18GVAO does not support Quad SPI. It implements a four-wire SPI interface with Dual I/O capability (SIO0/SIO1) for enhanced bandwidth, but lacks dedicated QSPI pins or instruction set support (e.g., 4-4-4 mode). Its supported protocols are SPI Mode 0 and Mode 3, plus Fast-Read Dual-Output (3BH) and Fast-Read Dual I/O (BBH), as specified in Table 5-1 of DS20005397E.
What package type is used for SST25PF040C-40E/SN18GVAO, and what are its key mechanical dimensions?
The SST25PF040C-40E/SN18GVAO is packaged in an 8-contact USON (Ultra Thin Small Outline No-lead) measuring 2.0 mm × 3.0 mm × 0.55 mm, per Figure 2-1 and Package Information in DS20005397E. This land-grid array (LGA) package has bottom-exposed pads for thermal dissipation and requires stencil-defined solder paste deposition per IPC-7351B standards.
How does the HOLD# pin function during active SPI communication in SST25PF040C-40E/SN18GVAO?
In SST25PF040C-40E/SN18GVAO, the HOLD# pin suspends an ongoing SPI transaction without deselecting the device or resetting internal state. As defined in Section 4.0.1 and Figure 4-2 of DS20005397E, HOLD# must be asserted low while SCK is low; SO enters high-impedance, while SI and SCK remain valid. Communication resumes upon deasserting HOLD# (high) while SCK is low - preserving address pointer and command context.
What is the endurance and data retention specification for SST25PF040C-40E/SN18GVAO?
The SST25PF040C-40E/SN18GVAO is rated for 100,000 program/erase cycles and greater than 20 years of data retention at +85°C, as stated in the Features section (DS20005397E, page 1). These values are guaranteed across the full Industrial Plus temperature range (–40°C to +105°C) and are intrinsic to Microchip's SuperFlash cell architecture, not extrapolated or typical-only figures.
SST25PF040C-40E/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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SST25PF040C-40E/SN18GVAO FAQ
1.How can I place an order for SST25PF040C-40E/SN18GVAO through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25PF040C-40E/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-40E/SN18GVAO reliable?
The price and inventory of SST25PF040C-40E/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-40E/SN18GVAO is usually 5 days.
3.What payment methods are accepted for SST25PF040C-40E/SN18GVAO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25PF040C-40E/SN18GVAO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25PF040C-40E/SN18GVAO?
SST25PF040C-40E/SN18GVAO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25PF040C-40E/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-40E/SN18GVAO?
For technical support, including SST25PF040C-40E/SN18GVAO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25PF040C-40E/SN18GVAO requirements.
6.How does Aetrix verify that SST25PF040C-40E/SN18GVAO is sourced from the original manufacturer or authorized distributors?
All SST25PF040C-40E/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-40E/SN18GVAO meets industry standards.
7.What is the process for return or replacement of SST25PF040C-40E/SN18GVAO?
All SST25PF040C-40E/SN18GVAO units undergo pre-shipment inspection (PSI). If there is an issue with SST25PF040C-40E/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-40E/SN18GVAO part is unused and in its original packaging.
Return procedure for SST25PF040C-40E/SN18GVAO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST25PF040C-40E/SN18GVAO Tags
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M24C02-WMN6TP
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