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Microchip Technology SST26VF040A-80E/MF
- Part No.:
- SST26VF040A-80E/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST26VF040A-80E/MF.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:588
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Product details
Overview
SST26VF040A-80E/MF from Microchip Technology is a 4-Mbit Serial Quad I/O™ (SQI™) Flash memory IC supporting dual-voltage operation (2.3V–3.6V), 80 MHz max clock frequency (Extended temperature), uniform 4-Kbyte sectors, and hardware/software write protection. It serves as nonvolatile program/data storage in microcontroller boot loaders and firmware update modules.
For engineers reviewing the SST26VF040A-80E/MF datasheet, SST26VF040A-80E/MF pinout, SST26VF040A-80E/MF application, or SST26VF040A-80E/MF equivalent, key selection considerations include SQI vs. SPI protocol compatibility, 80 MHz timing at extended temperature (−40°C to +125°C), WDFN-8 vs. SOIC-8 package options, and OTP Security ID support.
Technical Context
The SST26VF040A-80E/MF implements a six-wire, 4-bit multiplexed I/O interface with full backward compatibility to standard SPI (x1/x2/x4 modes), supporting both Mode 0 and Mode 3 clock polarity. Its SuperFlash® split-gate cell architecture enables 100,000 program/erase cycles and >100 years data retention.
It features flexible erase granularity (4-Kbyte sectors, 32-Kbyte and 64-Kbyte overlay blocks), page-program capability (256 bytes/page), and write-suspend functionality allowing concurrent access to unprotected memory regions during active program/erase operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 Kbytes), organized as uniform 4-Kbyte erasable sectors |
| Interface Protocol | Serial Quad I/O™ (SQI™) with full SPI x1/x2/x4 command-set compatibility |
| Max Clock Frequency | 80 MHz (at 2.3V–3.6V, Extended temp: −40°C to +125°C) |
| Erase Performance | Sector/Block Erase: 20 ms typical; Chip Erase: 40 ms typical |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention |
| Supply Voltage | 2.3V–3.6V single supply - enables direct interfacing with 2.5V/3.0V logic domains |
| Security Feature | One-Time-Programmable 2-Kbyte Security ID with factory-programmed 128-bit unique identifier |
Pinout & Package
Package: 8-contact WDFN (6 mm × 5 mm) and 8-lead SOIC (3.90 mm); both RoHS-compliant and AEC-Q100 qualified for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low chip select; must remain low throughout command sequence and data transfer |
| SIO[3:0] / SI/SO / WP#/HOLD#/RESET# | Multiplexed Serial I/O | Configurable pins: SIO[3:0] in SQI mode; SI/SO/WP#/HOLD#/RESET# in SPI mode per Configuration register (IOC bit) |
| SCK | Serial Clock | Provides timing reference; data latched on rising edge (input), shifted out on falling edge (output) |
| VDD | Power Supply | 2.3V–3.6V supply input; powers internal logic and memory array |
| VSS | Ground | Reference ground for all I/O and core circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Interface | 4-bit multiplexed serial bus quadruples throughput vs. standard SPI at same clock frequency |
| Flexible Erase Architecture | Uniform 4-Kbyte sectors + 32-Kbyte and 64-Kbyte overlay blocks enable granular firmware partitioning |
| Write-Suspend Capability | Pause active program/erase to service time-critical reads from other memory regions without aborting operation |
| Hardware Write Protection | WP# pin + WPEN/IOC bits provide configurable lock-down of Block Protection bits (BP0–BP2) in STATUS register |
| OTP Security ID | Factory-programmed 128-bit unique ID + user-programmable 2-Kbyte area supports device authentication and secure boot |
Applications
| Boot Memory for Automotive ECUs | Firmware Storage in Industrial PLCs |
|---|---|
Use Scenario: Stores bootloader and safety-critical firmware in engine control units requiring AEC-Q100 qualification and extended temperature operation. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 80 MHz read access and sector-level erase for over-the-air updates. Use Value: Enables reliable field firmware upgrades via 4-Kbyte sector erase without disrupting system operation using write-suspend. | Use Scenario: Holds configuration data and control logic in programmable logic controllers deployed in harsh industrial environments. IC Role / Device Role / Timing Role: High-reliability data logging and parameter storage with >100-year retention and 100K-cycle endurance. Use Value: Reduces maintenance cost by eliminating need for periodic memory replacement in sealed enclosures. |
| Secure Boot Module in Medical Devices | Code Storage for Edge AI Sensors |
Use Scenario: Implements root-of-trust in Class II medical imaging equipment requiring cryptographic identity verification. IC Role / Device Role / Timing Role: Secure ID storage with factory-programmed 128-bit identifier and user-programmable OTP area for public-key binding. Use Value: Prevents counterfeit firmware injection by validating signature against immutable hardware identity before execution. | Use Scenario: Stores inference models and sensor calibration tables in battery-powered edge AI nodes with strict power budgets. IC Role / Device Role / Timing Role: Low-power serial flash with 15 µA standby current and burst-read optimization for intermittent wake-up cycles. Use Value: Extends battery life by minimizing active current (15 mA @ 80 MHz) and enabling rapid model loading via linear burst mode. |
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 SPI-only (no SQI), 104 MHz max, 1.65V–1.95V/2.7V–3.6V dual-voltage support | Lacks SQI interface and Security ID; supports lower VDD min (1.65V) but no extended-temp grade | Select when SQI bandwidth is unnecessary and ultra-low-voltage operation is required |
| Cypress S25FL004K | 4-Mbit Quad SPI (QSPI), 104 MHz max, 2.7V–3.6V only, no OTP Security ID or write-suspend | Supports QSPI x4 read but lacks write-suspend and factory-unique ID; not AEC-Q100 qualified | Select for cost-sensitive consumer designs where automotive qualification and security features are not mandatory |
Compared with W25Q40EW and S25FL004K, the SST26VF040A-80E/MF uniquely combines AEC-Q100 qualification, OTP Security ID, write-suspend, and SQI interface - making it optimal for automotive and secure industrial firmware storage where concurrent access and hardware-rooted identity are critical.
Availability
SST26VF040A-80E/MF is available at Aetrix Electronics and suitable for automotive ECU boot memory, industrial PLC firmware storage, medical device secure boot modules, and edge AI sensor code storage requiring stable component supply across extended temperature ranges.
Supply support for SST26VF040A-80E/MF 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 provider of microcontrollers, analog components, and Flash memory solutions, with emphasis on reliability, longevity, and automotive-grade qualification.
The SST26VF040A-80E/MF belongs to Microchip's Serial Quad I/O™ Flash family, designed specifically for high-performance, low-pin-count nonvolatile storage in safety-critical and resource-constrained embedded systems.
FAQ
What voltage range does the SST26VF040A-80E/MF support for reliable operation?
The SST26VF040A-80E/MF operates across a single supply range of 2.3V to 3.6V, enabling compatibility with both 2.5V and 3.0V system domains. This dual-voltage capability eliminates level-shifting requirements in mixed-voltage designs and ensures stable read/write performance across its full industrial (−40°C to +85°C) and extended (−40°C to +125°C) temperature ranges. The SST26VF040A-80E/MF maintains specified timing and endurance within this range without external regulation.
How does the SST26VF040A-80E/MF implement Quad I/O functionality while maintaining SPI compatibility?
The SST26VF040A-80E/MF defaults to standard SPI mode after power-on reset, supporting x1/x2/x4 commands. The Enable Quad I/O (EQIO) command (0x38) configures SIO[3:0] for multiplexed quad-data transfers, enabling 4-bit-wide command/address/data sequences. The IOC bit in the Configuration register controls pin mapping, and the device supports both SPI Mode 0 and Mode 3 clocking. The SST26VF040A-80E/MF retains full command-set compatibility - meaning existing SPI firmware can be reused with minimal modification to enable SQI acceleration.
What is the purpose and behavior of the Security ID feature in the SST26VF040A-80E/MF?
The SST26VF040A-80E/MF includes a 2-Kbyte Security ID (Sec ID) space comprising a factory-programmed 128-bit unique identifier (immutable) and a user-programmable area. The PSID command programs the user area, and LSID permanently locks the entire Sec ID space against further writes. Once locked, the SEC bit in the Configuration register becomes '1' and cannot be reset. This provides hardware-rooted device identity for secure boot, anti-counterfeiting, and cryptographic key binding - a capability not present in standard SPI flash devices. The SST26VF040A-80E/MF leverages this for tamper-resistant firmware validation.
Can the SST26VF040A-80E/MF perform background operations without halting system access?
Yes - the SST26VF040A-80E/MF supports write-suspend functionality. During an active program or erase operation, issuing the WRSU command suspends the operation, allowing immediate read access to any unprotected memory region. The WRRE command resumes the suspended operation. This enables time-critical tasks (e.g., sensor polling or interrupt handling) to proceed without waiting for nonvolatile writes to complete. The SST26VF040A-80E/MF tracks suspend state via WSP/WSE bits in the Configuration register, ensuring deterministic recovery.
What package options and environmental qualifications apply to the SST26VF040A-80E/MF?
The SST26VF040A-80E/MF is offered in two RoHS-compliant packages: 8-contact WDFN (6 mm × 5 mm) and 8-lead SOIC (3.90 mm). Both variants are AEC-Q100 qualified for automotive applications and rated for extended temperature operation (−40°C to +125°C). The "E" suffix in SST26VF040A-80E/MF denotes the extended temperature grade, and the "/MF" suffix specifies the WDFN package. The SST26VF040A-80E/MF meets stringent automotive reliability standards including HTOL, TC, and UHAST testing per AEC-Q100 Rev G.
SST26VF040A-80E/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST26 SQI®
- 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 - Quad I/O
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- 1.5ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (5x6)
SST26VF040A-80E/MF FAQ
1.How can I place an order for SST26VF040A-80E/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST26VF040A-80E/MF 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 SST26VF040A-80E/MF reliable?
The price and inventory of SST26VF040A-80E/MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST26VF040A-80E/MF is usually 5 days.
3.What payment methods are accepted for SST26VF040A-80E/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST26VF040A-80E/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST26VF040A-80E/MF?
SST26VF040A-80E/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST26VF040A-80E/MF 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 SST26VF040A-80E/MF?
For technical support, including SST26VF040A-80E/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST26VF040A-80E/MF requirements.
6.How does Aetrix verify that SST26VF040A-80E/MF is sourced from the original manufacturer or authorized distributors?
All SST26VF040A-80E/MF 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 SST26VF040A-80E/MF meets industry standards.
7.What is the process for return or replacement of SST26VF040A-80E/MF?
All SST26VF040A-80E/MF units undergo pre-shipment inspection (PSI). If there is an issue with SST26VF040A-80E/MF, 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 SST26VF040A-80E/MF part is unused and in its original packaging.
Return procedure for SST26VF040A-80E/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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