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Microchip Technology SST26VF020AT-80E/SN
- Part No.:
- SST26VF020AT-80E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST26VF020AT-80E/SN.pdf
- Description:
- IC FLASH 2MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,295
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Product details
Overview
SST26VF020AT-80E/SN from Microchip Technology is a 2-Mbit Serial Quad I/O™ (SQI™) Flash memory IC designed for embedded firmware storage and code execution in space-constrained systems. It operates from 2.3V–3.6V, supports 80 MHz max clock frequency (Extended temperature), delivers 256-byte page programming, and features uniform 4-Kbyte sectors with 100,000 erase/write cycles - deployed in industrial control boot loaders and automotive infotainment firmware storage.
For engineers reviewing the SST26VF020AT-80E/SN datasheet, SST26VF020AT-80E/SN pinout, SST26VF020AT-80E/SN application, or SST26VF020AT-80E/SN equivalent, key selection considerations include SQI vs. SPI protocol mode configuration, hardware write-protection pin behavior (WP#), burst-length programmability, and OTP Security ID usage for device authentication in secure boot implementations.
Technical Context
The SST26VF020AT-80E/SN implements a six-wire SQI interface (SCK, CE#, RESET#/HOLD#/SIO3, WP#/SIO2, SO/SIO1, SI/SIO0, VDD, VSS) supporting both Mode 0 and Mode 3 SPI compatibility and full x1/x2/x4 read/write command sets. Its SuperFlash® split-gate cell architecture enables 20 ms typical sector erase and 40 ms typical chip erase - significantly faster than conventional NOR Flash.
It integrates dual operational modes: default SPI mode at power-up (SI/SO pins active), configurable to SQI mode via EQIO command (SIO[3:0] multiplexed I/O). The Configuration register (IOC bit) controls I/O pin mapping, while STATUS register bits (BP0/BP1/BPL) manage software block protection - with hardware write protection enabled only when WPEN=1 and IOC=0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Mbit (256 Kbytes), organized in uniform 4-Kbyte sectors |
| Supply Voltage | 2.3V–3.6V - single-supply operation enables direct interfacing with 2.5V/3.3V microcontrollers without level shifters |
| Max Clock Frequency | 80 MHz (Extended temp: –40°C to +125°C) - enables high-throughput firmware updates over SPI/SQI |
| Erase Endurance | 100,000 cycles minimum - supports field firmware upgrades across product lifetime |
| Data Retention | Greater than 100 years - ensures long-term reliability in unpowered storage applications |
| Page Program Size | 256 bytes per page - aligns with common MCU flash programming granularity and reduces write overhead |
| Security ID | 2-Kbyte OTP area: 128-bit factory-unique ID + user-programmable segment - enables secure device binding and anti-cloning |
Pinout & Package
Package: 8-contact WDFN (6 mm × 5 mm), RoHS-compliant, thermal pad exposed on bottom - optimized for compact PCB layouts and thermal dissipation in automotive and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low chip select; must remain low throughout command sequence - enables multi-device SPI bus sharing |
| SIO[3:0] / SI/SO / WP#/HOLD#/RESET# | Multiplexed Serial I/O | In SPI mode: SI (input), SO (output), WP# (hardware protect), HOLD# (pause), RESET# (reset); in SQI mode: all four SIO pins carry bidirectional command/address/data - eliminates need for separate data lines |
| SCK | Serial Clock | Timing reference; latches input on rising edge, outputs data on falling edge - compatible with standard SPI timing requirements |
| VDD | Power Supply | 2.3V–3.6V supply input - powers internal charge pumps for erase/program operations |
| VSS | Ground | Reference return path - must be low-impedance to ensure stable read/write margins and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O (SQI) Protocol | 4-bit multiplexed I/O doubles effective throughput vs. standard SPI at same clock rate - reduces firmware load time in resource-constrained hosts |
| Write-Suspend Capability | Interrupt ongoing program/erase to service higher-priority reads - essential for real-time systems requiring concurrent memory access |
| Flexible Erase Granularity | Supports 4-Kbyte sector, 32-Kbyte block, and 64-Kbyte block erase - enables selective firmware patching without full chip reprogramming |
| Software Block Protection | BP0/BP1 bits configure 0–100% memory protection; BPL bit locks settings - prevents accidental corruption of bootloader or calibration data |
| OTP Security ID | Factory-programmed 128-bit unique ID + 2-Kbyte user area - provides cryptographic root-of-trust foundation for secure boot and firmware validation |
Applications
| Industrial PLC Firmware Storage | Automotive Infotainment Boot Memory |
|---|---|
Use Scenario: Storing and executing boot code and configuration parameters in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast random read access and deterministic erase latency - serves as primary XIP (execute-in-place) memory for ARM Cortex-M7-based controllers. Use Value: 80 MHz SQI read speed and 20 ms sector erase enable rapid firmware updates during maintenance windows without system downtime. | Use Scenario: Holding certified bootloader and safety-critical firmware images in head-unit ECUs requiring AEC-Q100 Grade 2 qualification. IC Role / Device Role / Timing Role: Secure, high-reliability storage element with OTP Security ID - used for cryptographic signature verification prior to firmware execution. Use Value: 100-year data retention and AEC-Q100 qualification ensure integrity across 15+ year vehicle lifecycles under thermal cycling stress. |
| Medical Diagnostic Device Configuration | Smart Energy Meter Calibration Data |
Use Scenario: Storing calibrated sensor coefficients and regulatory-compliant diagnostic algorithms in portable ultrasound and ECG units. IC Role / Device Role / Timing Role: Parameter storage with hardware write-protection (WP# pin) and software lock-down (BPL bit) - prevents unauthorized modification during clinical use. Use Value: 100,000-cycle endurance supports daily recalibration routines over 10+ years of clinical deployment. | Use Scenario: Retaining metrology calibration constants and tamper-evident event logs in ANSI C12.22-compliant smart meters deployed outdoors. IC Role / Device Role / Timing Role: Long-term nonvolatile storage with extended temperature support (–40°C to +125°C) - maintains accuracy across desert and arctic deployments. Use Value: Extended temp rating and >100-year data retention eliminate periodic recalibration visits and reduce total cost of ownership. |
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 W25Q20EW | 2-Mbit SPI-only (no SQI), 104 MHz max, 1.65V–1.95V/2.7V–3.6V dual supply - lacks multiplexed quad I/O and OTP Security ID | Suitable for cost-sensitive consumer IoT where SQI bandwidth and device authentication are unnecessary | Select when board layout uses legacy SPI routing and security requirements are limited to software-only protection |
| Cypress S25FL008K | 8-Mbit density, 133 MHz HyperBus interface, no OTP ID - supports octal DTR but requires different controller IP and larger footprint | Used in high-performance graphics display buffers where bandwidth >100 MB/s is required | Choose only if migrating to higher-density, higher-speed memory with HyperBus-compatible host MCU and PCB redesign budget available |
Compared with W25Q20EW, SST26VF020AT-80E/SN adds SQI throughput and hardware-enforced security; versus S25FL008K, it trades density and speed for smaller footprint, lower power, and integrated device identity - making it optimal for compact, secure, thermally demanding embedded nodes.
Availability
SST26VF020AT-80E/SN is available at Aetrix Electronics and suitable for industrial control firmware storage, automotive infotainment boot loading, and medical device calibration data retention requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SST26VF020AT-80E/SN 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 memory solutions for industrial, automotive, and aerospace applications.
The SST26VF020AT-80E/SN belongs to Microchip's Serial Quad I/O™ Flash family, engineered for high-reliability, low-pin-count firmware storage in thermally stressed and security-conscious embedded systems.
FAQ
What is the maximum operating temperature range for the SST26VF020AT-80E/SN?
The SST26VF020AT-80E/SN is qualified for Extended temperature operation from –40°C to +125°C, meeting AEC-Q100 Grade 2 requirements. This rating is explicitly specified in the official Microchip datasheet DS20006279A and validated for automotive and industrial applications where ambient temperatures exceed standard industrial limits. The 80 MHz maximum clock frequency applies across this full extended range.
Does the SST26VF020AT-80E/SN support both SPI and SQI protocols simultaneously?
No - the SST26VF020AT-80E/SN operates in either SPI mode (default after power-up) or SQI mode, selected via the EQIO command. In SPI mode, pins function as SI/SO/WP#/HOLD#/RESET#; in SQI mode, SIO[3:0] become multiplexed bidirectional lines. The IOC bit in the Configuration register controls this mapping, and mode switching requires explicit command sequencing - simultaneous dual-protocol operation is not supported.
How is hardware write protection implemented on the SST26VF020AT-80E/SN?
Hardware write protection on the SST26VF020AT-80E/SN requires three conditions: WP# pin driven low, IOC bit = 0 (SPI mode), and WPEN bit = 1 (nonvolatile, set via WRSR). When active, it disables writes to the BPL, BP0, and BP1 bits in the STATUS register - preventing changes to block protection settings. This is distinct from software protection and remains effective even if the device is powered cyclically, provided WPEN remains set.
What is the purpose and structure of the Security ID in the SST26VF020AT-80E/SN?
The SST26VF020AT-80E/SN includes a 2-Kbyte OTP Security ID comprising a factory-programmed 128-bit unique identifier (immutable) and a user-programmable segment. Accessed via PSID/RSID/LSID commands, it enables device-level authentication and secure boot binding. Once locked with LSID, the entire Security ID space becomes permanently read-only - a hardware-enforced feature critical for anti-counterfeiting and firmware integrity verification in regulated markets.
Can the SST26VF020AT-80E/SN be used in place of standard SPI flash devices without hardware changes?
Yes - the SST26VF020AT-80E/SN is pin-compatible with industry-standard 8-lead SOIC and 8-contact WDFN packages and supports full SPI command-set compatibility (x1/x2 modes) out-of-reset. No PCB changes are required for drop-in replacement of legacy SPI flash, though enabling SQI mode or using advanced features like Write-Suspend requires firmware updates to issue corresponding commands (e.g., EQIO, WRSU).
SST26VF020AT-80E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST26 SQI®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K 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-SOIC
SST26VF020AT-80E/SN FAQ
1.How can I place an order for SST26VF020AT-80E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for SST26VF020AT-80E/SN 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 SST26VF020AT-80E/SN reliable?
The price and inventory of SST26VF020AT-80E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST26VF020AT-80E/SN is usually 5 days.
3.What payment methods are accepted for SST26VF020AT-80E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST26VF020AT-80E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST26VF020AT-80E/SN?
SST26VF020AT-80E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST26VF020AT-80E/SN 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 SST26VF020AT-80E/SN?
For technical support, including SST26VF020AT-80E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST26VF020AT-80E/SN requirements.
6.How does Aetrix verify that SST26VF020AT-80E/SN is sourced from the original manufacturer or authorized distributors?
All SST26VF020AT-80E/SN 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 SST26VF020AT-80E/SN meets industry standards.
7.What is the process for return or replacement of SST26VF020AT-80E/SN?
All SST26VF020AT-80E/SN units undergo pre-shipment inspection (PSI). If there is an issue with SST26VF020AT-80E/SN, 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 SST26VF020AT-80E/SN part is unused and in its original packaging.
Return procedure for SST26VF020AT-80E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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