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Microchip Technology SST26VF020AT-104I/SN
- Part No.:
- SST26VF020AT-104I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST26VF020AT-104I/SN.pdf
- Description:
- IC FLASH 2MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,566
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Product details
Overview
SST26VF020AT-104I/SN from Microchip Technology is a 2-Mbit Serial Quad I/O™ (SQI™) Flash memory IC designed for embedded code storage and data logging in space-constrained systems. It operates at 2.7V–3.6V, supports 104 MHz SPI/SQI read speeds, features uniform 4-Kbyte sectors and OTP 2-Kbyte Security ID, and is qualified for industrial temperature range (−40°C to +85°C) in an 8-lead SOIC package.
For engineers reviewing the SST26VF020AT-104I/SN datasheet, SST26VF020AT-104I/SN pinout, SST26VF020AT-104I/SN application, or SST26VF020AT-104I/SN equivalent, key selection criteria include quad-I/O burst performance, write-suspend capability for real-time firmware updates, hardware/software write protection granularity, and AEC-Q100-qualified reliability for automotive control modules.
Technical Context
The SST26VF020AT-104I/SN implements a six-wire SQI interface with multiplexed SIO[3:0] pins supporting x1/x2/x4 protocols, enabling up to 4× throughput versus standard SPI at identical clock frequency. Its SuperFlash® split-gate cell architecture delivers 100,000 program/erase cycles and >100-year data retention.
It integrates dual-mode operation: default SPI mode after power-on reset (with SI/SO pins), and configurable SQI mode via EQIO command. The device supports continuous and wrap-around linear bursts (8/16/32/64-byte), software polling via BUSY bit, and flexible erase hierarchy-4-Kbyte sectors, 32-Kbyte blocks, and 64-Kbyte blocks-all with typical 20 ms sector erase time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Mbit (256 Kbytes) organized in uniform 4-Kbyte sectors |
| Max Clock Frequency | 104 MHz (industrial grade, 2.7V–3.6V supply) |
| Supply Voltage | 2.7V–3.6V (single supply; also supports 2.3V–3.6V at reduced 80 MHz) |
| Endurance | 100,000 program/erase cycles minimum per sector |
| Data Retention | Greater than 100 years at 85°C |
| Erase Time | 20 ms typical for 4-Kbyte sector; 40 ms typical for full chip |
| Security ID | 2-Kbyte OTP area: 128-bit factory-unique ID + user-programmable segment |
Pinout & Package
Package: 8-lead SOIC (3.90 mm), RoHS-compliant, industrial temperature grade (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low enable for all serial commands; must remain low during full instruction sequence |
| SO/SIO1 | Serial Output / Quad I/O 1 | Default SPI output (SO); becomes bidirectional SIO1 in SQI mode after EQIO command |
| WP#/SIO2 | Write-Protect Input / Quad I/O 2 | Hardware write-protection control in SPI modes; serves as SIO2 in SQI mode when IOC=1 |
| VSS | Ground | Reference return path for all internal circuitry and I/O signals |
| VDD | Power Supply | 2.7V–3.6V main supply; powers core logic, memory array, and I/O buffers |
| RESET#/HOLD#/SIO3 | Reset/Hold Select / Quad I/O 3 | Configurable pin: RESET# (RSTHLD=1) or HOLD# (RSTHLD=0); functions as SIO3 in SQI mode |
| SCK | Serial Clock | Timing reference for all serial transfers; rising edge latches input, falling edge shifts out output |
| SI/SIO0 | Serial Input / Quad I/O 0 | Default SPI input (SI); becomes bidirectional SIO0 in SQI mode after EQIO command |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Interface | Enables 4× data throughput vs. standard SPI using same clock frequency and 8-pin SOIC footprint |
| Write-Suspend | Allows interruption of active program/erase to service high-priority reads without data corruption |
| Flexible Erase Hierarchy | Independent 4-Kbyte sector, 32-Kbyte block, and 64-Kbyte block erase options optimize update granularity |
| OTP Security ID | Factory-programmed 128-bit unique ID + 2-Kbyte user area enables secure device authentication and firmware binding |
| Software/Hardware Write Protection | Configurable BP0/BP1 bits + WP# pin support layered protection from accidental or malicious writes |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Storing calibrated engine maps and boot firmware in AEC-Q100-compliant ECU modules requiring field-upgradable code. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 104 MHz SQI read access and deterministic 20 ms sector erase for OTA updates. Use Value: Enables sub-100 ms firmware patching without system reset, leveraging write-suspend to maintain real-time sensor sampling during flash reprogramming. | Use Scenario: Holding ladder logic programs and configuration parameters in DIN-rail mounted programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Reliable data retention (>100 years at 85°C) and 100K-cycle endurance ensure long-term operation without maintenance. Use Value: Uniform 4-Kbyte sectors allow precise overwrite of individual function blocks without erasing entire application image, reducing update latency and wear. |
| Medical Diagnostic Imaging Bootloader | Smart Energy Meter Data Logging |
Use Scenario: Secure bootloader storage in FDA-cleared imaging equipment where firmware integrity and tamper resistance are critical. IC Role / Device Role / Timing Role: OTP Security ID provides cryptographically verifiable device identity; hardware write protection prevents unauthorized firmware modification. Use Value: Factory-programmed 128-bit ID binds firmware signature verification to physical hardware, satisfying IEC 62304 traceability requirements. | Use Scenario: Logging hourly consumption data and tariff schedules in utility-grade smart meters deployed outdoors for 15+ years. IC Role / Device Role / Timing Role: Low-power standby current (15 µA typical) extends battery life; robust data retention ensures decade-long data integrity. Use Value: 15 µA standby draw minimizes primary battery drain during 10-year deployment, while >100-year retention guarantees meter history validity across full product lifecycle. |
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, 133 MHz max, 1.65V–1.95V/2.7V–3.6V dual supply; no SQI interface; only standard SPI/x4 Quad SPI | Lacks SQI protocol and write-suspend; supports lower voltage but no AEC-Q100 qualification | Choose for cost-sensitive consumer designs needing higher clock speed but not automotive qualification or SQI bandwidth |
| Cypress S25FL032P | 32 Mbit capacity, 80 MHz max, supports HyperBus interface; no OTP Security ID; different sector layout (64-Kbyte only) | Higher density but larger erase granularity; lacks factory-unique ID and AEC-Q100 certification | Choose when >2 Mbit capacity is required and security ID is not needed; verify compatibility with existing HyperBus controller |
Compared with W25Q20EW and S25FL032P, the SST26VF020AT-104I/SN uniquely combines AEC-Q100 qualification, SQI's 4× throughput advantage, write-suspend for real-time systems, and OTP Security ID - making it optimal for automotive and safety-critical embedded firmware storage where deterministic timing, security, and reliability are non-negotiable.
Availability
SST26VF020AT-104I/SN is available at Aetrix Electronics and suitable for automotive ECU development, industrial PLC firmware storage, and medical diagnostic device bootloaders requiring stable component supply across extended production lifecycles.
Supply support for SST26VF020AT-104I/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 global semiconductor company delivering microcontrollers, analog, FPGA, and memory solutions with emphasis on reliability, longevity, and embedded system integration.
The SST26VF020AT-104I/SN belongs to Microchip's Serial Quad I/O™ Flash family, engineered specifically for high-reliability embedded applications demanding fast, secure, and low-pin-count nonvolatile memory - especially in automotive, industrial, and medical systems.
FAQ
What is the maximum operating frequency of the SST26VF020AT-104I/SN in SQI mode?
The SST26VF020AT-104I/SN supports up to 104 MHz in SQI mode when powered at 2.7V–3.6V under industrial temperature conditions (−40°C to +85°C). This frequency applies to both SQOR (Quad Output Read) and SQIOR (Quad I/O Read) commands. At 2.3V–3.6V, the maximum supported frequency drops to 80 MHz for extended temperature range operation.
Does the SST26VF020AT-104I/SN support hardware write protection via the WP# pin?
Yes, the SST26VF020AT-104I/SN supports hardware write protection through the WP# pin, but only when the WPEN bit in the Configuration register is set to '1' and the IOC bit is '0' (SPI single/dual-bit mode). In SQI mode (IOC=1), the WP# pin is repurposed as SIO2 and hardware write protection is disabled. The factory default sets WPEN=0, so WP# functionality must be explicitly enabled.
How does the write-suspend feature work in the SST26VF020AT-104I/SN?
The SST26VF020AT-104I/SN supports write-suspend via the WRSU (B0H) command, allowing active program or erase operations to be paused and resumed later. When suspended, the device remains responsive to read commands, enabling real-time data access without aborting the pending write. Resume is triggered by WRRE (30H). This is critical for applications like automotive ECUs that must maintain sensor sampling during firmware updates.
Is the SST26VF020AT-104I/SN AEC-Q100 qualified, and what grade does it meet?
Yes, the SST26VF020AT-104I/SN is AEC-Q100 qualified. The "I" suffix in the part number denotes Industrial grade, certified for operation from −40°C to +85°C. While the datasheet confirms AEC-Q100 qualification, it does not specify Grade 1 or Grade 2; qualification is documented per AEC-Q100 Rev-G stress test requirements for automotive components.
What is the purpose and structure of the Security ID in the SST26VF020AT-104I/SN?
The SST26VF020AT-104I/SN includes a 2-Kbyte OTP Security ID with two segments: a factory-programmed 128-bit unique identifier (immutable) and a user-programmable area. The PSID command programs the user area; LSID locks the entire ID space permanently. Once locked (SEC bit = 1), no further writes are possible - providing hardware-rooted device identity for secure boot and firmware binding.
SST26VF020AT-104I/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:
- 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-SOIC
SST26VF020AT-104I/SN FAQ
1.How can I place an order for SST26VF020AT-104I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for SST26VF020AT-104I/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-104I/SN reliable?
The price and inventory of SST26VF020AT-104I/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-104I/SN is usually 5 days.
3.What payment methods are accepted for SST26VF020AT-104I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST26VF020AT-104I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST26VF020AT-104I/SN?
SST26VF020AT-104I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST26VF020AT-104I/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-104I/SN?
For technical support, including SST26VF020AT-104I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST26VF020AT-104I/SN requirements.
6.How does Aetrix verify that SST26VF020AT-104I/SN is sourced from the original manufacturer or authorized distributors?
All SST26VF020AT-104I/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-104I/SN meets industry standards.
7.What is the process for return or replacement of SST26VF020AT-104I/SN?
All SST26VF020AT-104I/SN units undergo pre-shipment inspection (PSI). If there is an issue with SST26VF020AT-104I/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-104I/SN part is unused and in its original packaging.
Return procedure for SST26VF020AT-104I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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