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Microchip Technology SST26VF040AT-80E/MF
- Part No.:
- SST26VF040AT-80E/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST26VF040AT-80E/MF.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8WDFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SST26VF040AT-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 in extended temperature range, and uniform 4-Kbyte sector/32-Kbyte & 64-Kbyte block erase architecture. It serves as nonvolatile code/data storage in microcontroller boot loaders and firmware update systems.
For engineers reviewing the SST26VF040AT-80E/MF datasheet, SST26VF040AT-80E/MF pinout, SST26VF040AT-80E/MF application, or SST26VF040AT-80E/MF equivalent, key selection criteria include SQI vs. SPI protocol support, 80 MHz timing at -40°C to +125°C, WDFN-8 package footprint, hardware write protection via WP# pin, and OTP Security ID capability.
Technical Context
The SST26VF040AT-80E/MF implements a six-wire SQI interface with multiplexed SIO[3:0] pins enabling 4-bit I/O transfers, achieving up to 4× throughput versus standard SPI at identical clock rates. It supports both SPI Mode 0 and Mode 3, with configurable IOC bit selecting between legacy SPI (WP#/HOLD#/RST# pin functions) and SQI mode (SIO2/SIO3 activation).
Internally, it uses SuperFlash® split-gate CMOS technology delivering 100,000 program/erase cycles and >100 years data retention. The device integrates a 2-Kbyte Security ID with factory-programmed 128-bit unique identifier and user-programmable area, locked via LSID command.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 Kbytes), organized as uniform 4-Kbyte sectors |
| Interface Protocol | Serial Quad I/O™ (SQI) and SPI x1/x2/x4; IOC bit selects mode |
| Max Clock Frequency | 80 MHz at 2.3V–3.6V over -40°C to +125°C (Extended temp) |
| Erase Performance | 20 ms typical sector/32-KB/64-KB block erase; 40 ms chip erase |
| Write Endurance | 100,000 program/erase cycles minimum per sector |
| Data Retention | Greater than 100 years at +85°C |
| Security Feature | One-Time-Programmable 2-Kbyte Security ID with factory 128-bit UID |
Pinout & Package
Package: 8-contact WDFN (6 mm × 5 mm), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low enable for all serial commands; must remain low during full instruction sequence |
| SIO[0] (SI) | Serial Data Input | Default SPI input pin; latched on rising SCK edge; becomes SIO0 in SQI mode |
| SIO[1] (SO) | Serial Data Output | Default SPI output pin; driven on falling SCK edge; becomes SIO1 in SQI mode |
| SIO[2] (WP#) | Write-Protect / I/O | In SPI mode: hardware write-protection control; in SQI mode: bidirectional I/O (SIO2) |
| SIO[3] (RST#/HOLD#) | Reset/Hold Select / I/O | Configurable via RSTHLD bit; in SPI mode: HOLD# (active-low pause) or RST# (hardware reset); in SQI mode: SIO3 |
| SCK | Serial Clock | Provides timing; commands/addresses/data latched on rising edge; output shifted on falling edge |
| VDD | Power Supply | 2.3V–3.6V single supply; powers internal logic and memory array |
| VSS | Ground | Reference return path for all signals and power |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Interface | Enables 4-bit parallel data transfer on SIO[3:0], quadrupling bandwidth vs. SPI x1 at same clock rate |
| Flexible Erase Architecture | Uniform 4-Kbyte sectors + overlay 32-Kbyte and 64-Kbyte blocks allow granular firmware partitioning |
| Write-Suspend Capability | Allows interrupting active program/erase to service higher-priority read requests without data corruption |
| Hardware Write Protection | WP# pin + WPEN/IOC bits provide configurable lock-down of STATUS register BP bits against accidental writes |
| OTP Security ID | Factory-programmed 128-bit UID enables secure device authentication; user area supports cryptographic key storage |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing boot code and configuration parameters in programmable logic controllers operating continuously in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 80 MHz read access and robust 100K-cycle endurance for field firmware updates. Use Value: Extended -40°C to +125°C operation ensures reliability in uncontrolled cabinet temperatures; SQI interface reduces PCB trace count versus parallel NOR Flash. | Use Scenario: Holding safety-critical boot firmware for camera/radar processors in advanced driver-assistance systems. IC Role / Device Role / Timing Role: AEC-Q100 qualified code storage with deterministic 20 ms sector erase for OTA update rollback capability. Use Value: Hardware write protection (WP#) prevents unauthorized modification during vehicle runtime; OTP Security ID enables secure boot chain validation. |
| Medical Imaging Device Configuration | Smart Energy Meter Data Logging |
Use Scenario: Retaining calibration tables and user preferences in portable ultrasound and X-ray equipment requiring long-term data integrity. IC Role / Device Role / Timing Role: High-reliability data storage with >100-year retention at +85°C and 100,000-cycle endurance for recalibration events. Use Value: Uniform 4-Kbyte sectors simplify wear-leveling algorithms; low 15 µA standby current extends battery life in portable units. | Use Scenario: Logging time-stamped energy consumption data in smart meters deployed across wide ambient temperature ranges. IC Role / Device Role / Timing Role: Field-upgradable nonvolatile memory supporting frequent small writes (e.g., hourly meter readings) with fast 256-byte page programming. Use Value: 80 MHz burst read performance accelerates data retrieval during utility polling; WDFN-8 package minimizes board space in compact meter housings. |
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 | 4-Mbit SPI-only (no SQI), 104 MHz max, SOIC-8/WSON-8 packages, no OTP Security ID | Lacks quad I/O bandwidth and hardware security features; suitable for cost-sensitive SPI-only designs | Select when SQI interface and Security ID are not required; verify 104 MHz timing compatibility with host controller |
| Cypress S25FL004KAGMFI010 | 4-Mbit Quad SPI (QSPI), 80 MHz max, SOIC-8 package, no OTP Security ID, different command set | Supports QSPI x4 but lacks SQI-specific commands (e.g., EQIO, RBSQI); no factory UID or user-programmable security area | Choose for QSPI-native hosts needing pin-compatible replacement; requires firmware adaptation for command differences |
Compared with W25Q40EWUXIE and S25FL004KAGMFI010, the SST26VF040AT-80E/MF uniquely delivers SQI protocol acceleration, integrated OTP Security ID with factory UID, and AEC-Q100 qualification - making it optimal for automotive and industrial systems requiring both performance and security assurance.
Availability
SST26VF040AT-80E/MF is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical imaging device configuration requiring stable component supply across extended temperature ranges.
Supply support for SST26VF040AT-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 Inc. is a leading provider of microcontrollers, analog components, and Flash memory solutions, headquartered in Chandler, Arizona.
The SST26VF040AT-80E/MF belongs to Microchip's Serial Quad I/O™ Flash family, engineered for high-reliability embedded systems demanding fast, secure, and low-power nonvolatile storage in space-constrained designs.
FAQ
What is the maximum operating frequency of the SST26VF040AT-80E/MF at extended temperature?
The SST26VF040AT-80E/MF supports a maximum clock frequency of 80 MHz across its extended temperature range of -40°C to +125°C when operated within the 2.3V–3.6V supply range. This rating is validated per the official Microchip DS20006292A datasheet and applies to both SPI and SQI read operations under specified voltage and thermal conditions. The SST26VF040AT-80E/MF maintains full timing compliance at this speed without derating.
Does the SST26VF040AT-80E/MF support both SPI and SQI protocols simultaneously?
No, the SST26VF040AT-80E/MF does not operate in both SPI and SQI modes simultaneously. It defaults to SPI mode after power-on reset and transitions to SQI mode only upon execution of the Enable Quad I/O (EQIO) command, which configures SIO[2:3] as bidirectional I/O lines. The IOC bit in the Configuration register controls this functional assignment, and mode switching requires explicit host command sequencing. The SST26VF040AT-80E/MF cannot interleave SPI and SQI transactions.
How is hardware write protection implemented on the SST26VF040AT-80E/MF?
Hardware write protection on the SST26VF040AT-80E/MF is implemented using the WP# pin in conjunction with the WPEN and IOC bits in the Configuration register. When IOC = 0 and WPEN = 1, driving WP# low locks the Block Protect Lock (BPL) bit, preventing changes to BP0–BP3 in the STATUS register. The SST26VF040AT-80E/MF ships with WPEN = 0 by default, disabling WP# functionality until explicitly enabled via Configuration register write.
What package type is used for the SST26VF040AT-80E/MF?
The SST26VF040AT-80E/MF uses an 8-contact WDFN (Wettable Flank Dual Flat No-lead) package measuring 6 mm × 5 mm. This RoHS-compliant package features exposed paddle thermal pad and wettable flank geometry for automated optical inspection (AOI) of solder joints. It is distinct from the SOIC-8 variant and requires specific reflow profile and stencil design per Microchip's packaging guidelines. The SST26VF040AT-80E/MF part number suffix "/MF" explicitly denotes the WDFN-8 package.
Is the SST26VF040AT-80E/MF AEC-Q100 qualified?
Yes, the SST26VF040AT-80E/MF is AEC-Q100 qualified for automotive applications. Per the official Microchip datasheet DS20006292A, it meets Grade 1 requirements (-40°C to +125°C) and has undergone stress testing including accelerated environmental, lifetime, and reliability validation per the AEC-Q100 standard. This qualification applies specifically to the SST26VF040AT-80E/MF variant and supports use in automotive infotainment, ADAS, and body control modules where automotive-grade reliability is mandated.
SST26VF040AT-80E/MF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST26 SQI®
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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)
SST26VF040AT-80E/MF FAQ
1.How can I place an order for SST26VF040AT-80E/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST26VF040AT-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 SST26VF040AT-80E/MF reliable?
The price and inventory of SST26VF040AT-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 SST26VF040AT-80E/MF is usually 5 days.
3.What payment methods are accepted for SST26VF040AT-80E/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST26VF040AT-80E/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST26VF040AT-80E/MF?
SST26VF040AT-80E/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST26VF040AT-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 SST26VF040AT-80E/MF?
For technical support, including SST26VF040AT-80E/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST26VF040AT-80E/MF requirements.
6.How does Aetrix verify that SST26VF040AT-80E/MF is sourced from the original manufacturer or authorized distributors?
All SST26VF040AT-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 SST26VF040AT-80E/MF meets industry standards.
7.What is the process for return or replacement of SST26VF040AT-80E/MF?
All SST26VF040AT-80E/MF units undergo pre-shipment inspection (PSI). If there is an issue with SST26VF040AT-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 SST26VF040AT-80E/MF part is unused and in its original packaging.
Return procedure for SST26VF040AT-80E/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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