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Microchip Technology SST26VF040A-104I/MF
- Part No.:
- SST26VF040A-104I/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST26VF040A-104I/MF.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,762
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Product details
Overview
SST26VF040A-104I/MF from Microchip Technology is a 4-Mbit Serial Quad I/O™ (SQI™) Flash memory IC designed for high-speed, low-pin-count embedded code storage and data logging. It operates at up to 104 MHz in 2.7V–3.6V industrial mode, supports x1/x2/x4 SPI and full SQI protocols, features uniform 4-Kbyte sectors and 32/64-Kbyte overlay blocks, and delivers 100,000 write/erase cycles with >100-year data retention - deployed in automotive instrument clusters and industrial PLC firmware storage.
For engineers reviewing the SST26VF040A-104I/MF datasheet, SST26VF040A-104I/MF pinout, SST26VF040A-104I/MF application, or SST26VF040A-104I/MF equivalent, key selection considerations include its dual-mode interface (SPI/SQI), hardware write-protection via WP# pin, 8-contact WDFN or 8-lead SOIC packaging, AEC-Q100 qualification, and 2-Kbyte OTP Security ID for secure boot authentication.
Technical Context
The SST26VF040A-104I/MF implements a six-wire, 4-bit multiplexed I/O interface (SIO[3:0]) supporting both legacy SPI (Mode 0/3, x1/x2) and high-throughput SQI protocol - enabling quad-data-rate transfers without additional pins. Its SuperFlash® split-gate cell architecture achieves faster erase (20 ms sector, 40 ms chip) and lower active current (15 mA @104 MHz) versus conventional NOR Flash.
It integrates dual protection layers: software-configurable block protection (BP0–BP3) with volatile lock-down (LDPS command), and hardware-based write protection via WP# pin controlled by nonvolatile WPEN and IOC bits. The RST#/HOLD#/SIO3 pin is configurable as Reset or Hold via RSTHLD bit, and the device ships with IOC=0 (SPI mode default) and factory-default BP0–BP3=0111 (upper half protected).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 Kbytes), organized in uniform 4-Kbyte sectors |
| Max Clock Frequency | 104 MHz @ 2.7V–3.6V (industrial temp); enables 416 MB/s effective throughput in SQI x4 mode |
| Interface Modes | Full SPI (x1/x2) + Serial Quad I/O™ (SQI) with command-set compatibility - no firmware redesign needed for migration |
| Erase Performance | Sector (4 Kbyte): 20 ms typ; Block (32/64 Kbyte): 20 ms typ; Chip: 40 ms typ - reduces firmware update latency |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention at 85°C - suitable for field-upgradable systems |
| Supply Voltage | 2.3V–3.6V single supply - supports wide-input DC-DC rails in automotive and industrial power domains |
| Temperature Range | Industrial: –40°C to +85°C; Extended: –40°C to +125°C; AEC-Q100 qualified - validated for under-hood and control-unit use |
| Security Feature | 2-Kbyte OTP Security ID: 128-bit factory-unique ID + user-programmable area, lockable via LSID command - enables root-of-trust boot verification |
Pinout & Package
Package: 8-contact WDFN (6 mm × 5 mm) and 8-lead SOIC (3.90 mm). Pin functions are shared across both packages per top-view pin numbering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low chip select; must remain low throughout command/data sequence - enables multi-device daisy-chaining on shared bus |
| SIO[3:0] / SI/SO / WP#/HOLD#/RST# | Multiplexed I/O / Dedicated SPI Pins | In SPI mode: SI (input), SO (output), WP# (hardware protect), HOLD# (pause), RST# (reset); in SQI mode: all four SIO pins carry bidirectional command/address/data - eliminates need for separate I/O lines |
| SCK | Serial Clock | Timing reference; inputs latched on rising edge, outputs shifted on falling edge - compatible with standard SPI master timing requirements |
| VDD, VSS | Power & Ground | Single 2.3V–3.6V supply; decoupling required within 10 mm of VDD pin to maintain signal integrity at 104 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Write-Suspend Capability | Interrupt active program/erase to service urgent read requests - critical for real-time OS firmware execution |
| Flexible Erase Granularity | Independent 4-Kbyte sector, 32-Kbyte block, and 64-Kbyte block erase - optimizes wear leveling and partial firmware updates |
| Software Reset Support | RSTEN (66H) + RST (99H) commands restore SPI mode and clear BUSY/WEL bits - enables recovery without hardware reset line assertion |
| Configurable I/O Function | IOC bit switches between SPI pin mapping (WP#/HOLD#/RST#) and SQI pin mapping (SIO2/SIO3) - allows runtime protocol reconfiguration |
| OTP Security ID | Factory-programmed 128-bit unique ID + 2-Kbyte user area, lockable via LSID - provides immutable device identity for secure provisioning |
| Low-Power Standby | 15 µA typical standby current - extends battery life in always-on telematics modules and sensor nodes |
Applications
| Automotive Instrument Cluster | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing calibrated gauge graphics, driver alert logic, and over-the-air (OTA) update images in dashboard ECUs. IC Role / Device Role / Timing Role: Nonvolatile code and configuration storage with AEC-Q100 validation; executes fast linear burst reads during boot and GUI rendering. Use Value: 104 MHz SQI interface delivers <100 µs latency for 256-byte graphics tile fetches; 4-Kbyte sector erase enables atomic OTA patching without full image reload. | Use Scenario: Holding ladder logic programs, I/O mapping tables, and calibration constants in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Field-upgradable firmware repository with >100-year data retention; withstands thermal cycling and EMI per IEC 61000-4 standards. Use Value: 32-Kbyte block erase completes in 20 ms - cuts PLC restart time after firmware update; extended temperature rating (–40°C to +125°C) ensures reliability near motor drives. |
| Medical Infusion Pump Bootloader | Smart Energy Meter Secure Boot |
Use Scenario: Hosting certified bootloader and safety-critical application code in Class II medical devices requiring FDA 510(k) traceability. IC Role / Device Role / Timing Role: Immutable, tamper-resistant boot source; verified via cryptographic signature check against OTP Security ID. Use Value: Factory-programmed 128-bit ID binds firmware to hardware; LSID command permanently locks ID - prevents cloning or unauthorized firmware substitution. | Use Scenario: Storing AES-256 keys and signed firmware images in utility-grade smart meters subject to NIST IR 7924 and DLMS/COSEM security mandates. IC Role / Device Role / Timing Role: Root-of-trust anchor with write-suspend capability - allows meter firmware to validate signatures while servicing real-time pulse counting interrupts. Use Value: Write-suspend lets bootloader pause flash writes during high-priority metering ISR; 100,000-cycle endurance supports 20+ years of field updates. |
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, 133 MHz max, 1.65V–1.95V/2.7V–3.6V dual supply; no SQI mode; lacks OTP Security ID | Targeted at ultra-low-voltage IoT sensors; not AEC-Q100 qualified | Select when cost-sensitive consumer designs require higher clock speed but omit security and automotive compliance |
| Cypress S25FL004A | 4 Mbit, 85 MHz max, supports x1/x2 SPI only; includes 1-Kbyte OTP but no user-programmable Security ID space | Legacy industrial control systems with existing Cypress toolchain integration | Select when migrating from older Spansion platforms and SQI bandwidth is unnecessary |
Compared with W25Q40EW and S25FL004A, the SST26VF040A-104I/MF uniquely combines AEC-Q100 qualification, 104 MHz SQI throughput, and 2-Kbyte user-lockable Security ID - making it the only option for automotive OTA updates requiring both performance and cryptographic root-of-trust.
Availability
SST26VF040A-104I/MF is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial PLC firmware storage, and medical infusion pump bootloaders requiring stable component supply across extended product lifecycles.
Supply support for SST26VF040A-104I/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 leading provider of microcontrollers, analog components, and Flash memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The SST26VF040A-104I/MF belongs to Microchip's Serial Quad I/O™ Flash family, engineered specifically for high-reliability embedded systems needing fast, secure, and pin-efficient nonvolatile storage in automotive, industrial, and medical applications.
FAQ
What interface protocols does the SST26VF040A-104I/MF support?
The SST26VF040A-104I/MF supports both traditional SPI (x1/x2 modes, Mode 0/3) and Serial Quad I/O™ (SQI) protocol with full command-set compatibility. After power-on reset, it defaults to SPI mode; the EQIO (38H) command enables SQI mode. This dual-mode capability allows seamless integration into legacy SPI systems while enabling 4× bandwidth scaling via SIO[3:0] multiplexing - a feature confirmed in DS20006292A Section 4.0.
Is the SST26VF040A-104I/MF qualified for automotive applications?
Yes, the SST26VF040A-104I/MF is AEC-Q100 qualified for automotive use, rated across the industrial temperature range (–40°C to +85°C) and extended range (–40°C to +125°C). Its SuperFlash® technology, 100,000-cycle endurance, and >100-year data retention meet stringent automotive reliability requirements - explicitly stated in the "Features" section of DS20006292A.
How does the Security ID feature work on the SST26VF040A-104I/MF?
The SST26VF040A-104I/MF includes a 2-Kbyte OTP Security ID with a factory-programmed 128-bit unique identifier and a user-programmable area. The PSID command programs the user area; the LSID command permanently locks the entire ID space. Once locked (SEC bit = 1), no further writes are possible - providing immutable device identity for secure boot, as detailed in DS20006292A Section 4.3 and Table 4-5.
What package options are available for the SST26VF040A-104I/MF?
The SST26VF040A-104I/MF is offered in two RoHS-compliant packages: 8-contact WDFN (6 mm × 5 mm) and 8-lead SOIC (3.90 mm). Pin assignments are identical for both packages, with CE#, SIO[3:0]/SI/SO/WP#/HOLD#/RST#, SCK, VDD, and VSS mapped per Figure 2-1 in DS20006292A - enabling direct PCB footprint interchangeability.
Does the SST26VF040A-104I/MF support hardware write protection?
Yes, the SST26VF040A-104I/MF supports hardware write protection via the WP# pin, enabled by setting the nonvolatile WPEN bit and configuring IOC=0. When WP# is driven low, it locks the BPL bit in the STATUS register, preventing changes to block protection settings - as defined in Table 4-1 and Section 4.2 of DS20006292A. The factory default has WPEN=0, disabling this function at power-up.
SST26VF040A-104I/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:
- 104 MHz
- Write Cycle Time - Word, Page:
- 1.5ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (5x6)
SST26VF040A-104I/MF FAQ
1.How can I place an order for SST26VF040A-104I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST26VF040A-104I/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-104I/MF reliable?
The price and inventory of SST26VF040A-104I/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-104I/MF is usually 5 days.
3.What payment methods are accepted for SST26VF040A-104I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST26VF040A-104I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST26VF040A-104I/MF?
SST26VF040A-104I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST26VF040A-104I/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-104I/MF?
For technical support, including SST26VF040A-104I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST26VF040A-104I/MF requirements.
6.How does Aetrix verify that SST26VF040A-104I/MF is sourced from the original manufacturer or authorized distributors?
All SST26VF040A-104I/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-104I/MF meets industry standards.
7.What is the process for return or replacement of SST26VF040A-104I/MF?
All SST26VF040A-104I/MF units undergo pre-shipment inspection (PSI). If there is an issue with SST26VF040A-104I/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-104I/MF part is unused and in its original packaging.
Return procedure for SST26VF040A-104I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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