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Microchip Technology SST26VF032BT-104I/MF
- Part No.:
- SST26VF032BT-104I/MF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
SST26VF032BT-104I/MF.pdf
- Description:
- IC FLASH 32MBIT SPI/QUAD 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:13,464
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Product details
Overview
SST26VF032BT-104I/MF from Microchip Technology is a 32-Mbit Serial Quad I/O™ (SQI™) Flash memory IC designed for high-speed, low-pin-count embedded storage. It operates at 104 MHz (2.7–3.6 V), supports x1/x2/x4 SPI and quad I/O protocols, features uniform 4-Kbyte sectors and 64-Kbyte blocks, and delivers 100,000 program/erase cycles with >100-year data retention - deployed in industrial microcontroller boot code storage and firmware update buffers.
For engineers reviewing the SST26VF032BT-104I/MF datasheet, SST26VF032BT-104I/MF pinout, SST26VF032BT-104I/MF application, or SST26VF032BT-104I/MF equivalent, key selection criteria include its dual-mode interface (SPI default / configurable SQI), hardware write-protection via WP# and HOLD#, burst-read capability with wrap-around, 8-contact WDFN (6 mm × 5 mm) package, and AEC-Q100 Grade 2 qualification for automotive control modules.
Technical Context
This device implements a six-wire, 4-bit multiplexed I/O interface using SIO[3:0] pins, enabling quad-data-rate transfers without increasing pin count. Its SuperFlash® split-gate cell technology enables faster erase (18 ms sector, 35 ms chip) and lower active current (15 mA @ 104 MHz) versus conventional NOR Flash.
It supports two factory-configured variants: SST26VF032B (IOC = 0 at power-up, WP#/HOLD# enabled, SI/SO active) and SST26VF032BA (IOC = 1, SIO2/SIO3 enabled for quad mode). The SST26VF032BT-104I/MF matches the SST26VF032BA variant per Microchip's ordering nomenclature and datasheet DS20005218J - confirmed by 'T' suffix (WDFN package), '104' speed grade (104 MHz), 'I' temperature grade (–40°C to +85°C), and '/MF' marking indicating 8-contact WDFN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MByte), organized as sixty-two 64-Kbyte blocks + eight 8-Kbyte parameter blocks + two 32-Kbyte overlay blocks |
| Max Clock Frequency | 104 MHz at 2.7–3.6 V; enables 416 MB/s effective quad-I/O throughput in burst mode |
| Erase Performance | Sector (4 Kbyte): 18 ms typical; Chip Erase: 35 ms typical - reduces firmware update latency in OTA systems |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention - suitable for infrequently updated configuration storage |
| Supply Voltage Range | 2.3 V–3.6 V single supply; supports mixed-voltage system integration with 2.5 V or 3.3 V I/O domains |
| Operating Temperature | –40°C to +85°C (Industrial grade), validated per AEC-Q100 Grade 2 for under-hood automotive ECUs |
| Security Features | One-time programmable 2-Kbyte Security ID with factory-programmed 64-bit unique ID and user-programmable area; lockout capability prevents reprogramming |
Pinout & Package
Package: 8-contact WDFN (6 mm × 5 mm), RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CE# | Chip Enable | Active-low enable signal; must remain low throughout command sequence; controls device selection on shared SPI bus |
| 2 SO/SIO1 | Serial Data Output / Quad I/O 1 | Default SPI output (SO); becomes bidirectional SIO1 in quad mode after EQIO command and IOC=1 configuration |
| 3 WP#/SIO2 | Write-Protect Input / Quad I/O 2 | In SPI mode: hardware write-protection for Block Protection register when WPEN=1; in quad mode: bidirectional SIO2 |
| 4 VSS | Ground | Reference ground for all I/O and core logic; requires low-impedance connection to minimize noise during high-speed reads |
| 5 VDD | Power Supply | 2.3–3.6 V supply; decoupling capacitor (0.1 µF) required near pin for stable 104 MHz operation |
| 6 HOLD#/SIO3 | Hold Input / Quad I/O 3 | In SPI mode: pauses ongoing serial transfer without resetting clock state; disabled in quad mode; tied high if unused |
| 7 SCK | Serial Clock | Input clock for timing; rising edge latches input data (SI/SIO[3:0]), falling edge outputs data; supports Mode 0 and Mode 3 |
| 8 SI/SIO0 | Serial Data Input / Quad I/O 0 | Default SPI input (SI); becomes bidirectional SIO0 in quad mode; used for command, address, and data ingress |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O Protocol Support | Enables 4× data bandwidth vs. standard SPI at same clock frequency - critical for fast boot image loading in resource-constrained MCUs |
| Flexible Block Protection | Independent software lock-down of 64-Kbyte, 32-Kbyte, and 8-Kbyte blocks plus OTP nonvolatile lock bits - secures bootloader and calibration data against field corruption |
| Write-Suspend Capability | Allows interruption of active erase/program to service time-critical read requests - maintains real-time responsiveness in safety-critical firmware updates |
| Burst Read with Wrap-Around | Continuous or fixed-length (8/16/32/64 byte) linear bursts eliminate address overhead - optimizes sequential instruction fetch in XIP applications |
| Security ID with Lockout | Factory-unique 64-bit ID + 2-Kbyte user space, permanently lockable to prevent cloning or unauthorized firmware signing |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing boot firmware and field-upgradable application code in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with deterministic 104 MHz read access and robust sector erase for partial updates. Use Value: 100,000-cycle endurance and >100-year retention ensure 15+ year deployment without refresh; AEC-Q100 Grade 2 rating validates reliability at 85°C ambient. | Use Scenario: Holding calibrated sensor parameters and secure boot keys in automotive BCMs requiring tamper resistance and functional safety compliance. IC Role / Device Role / Timing Role: Secure configuration storage with OTP Security ID and individual block write-lock for ASIL-B relevant data partitions. Use Value: Nonvolatile write-lock-down bits permanently protect calibration tables; factory-programmed 64-bit ID enables cryptographic binding to vehicle VIN. |
| Medical Diagnostic Imaging Bootloader | Smart Energy Meter Firmware Vault |
Use Scenario: Hosting signed bootloader and recovery image in portable ultrasound devices where firmware integrity is FDA-regulated. IC Role / Device Role / Timing Role: Trusted code repository with LSID-locked Security ID and hardware WP# protection during power transitions. Use Value: Dual-layer protection (software BPR + hardware WP#) prevents accidental overwrite during brown-out events; 2.3 V operation supports wide-input DC-DC converters. | Use Scenario: Storing tariff tables, communication stack binaries, and encryption keys in ANSI C12.22-compliant smart meters deployed outdoors. IC Role / Device Role / Timing Role: High-reliability firmware vault with 4-Kbyte uniform sectors enabling atomic over-the-air (OTA) patching. Use Value: 18 ms sector erase enables sub-second firmware delta updates; extended temperature range (–40°C to +85°C) ensures operation in unheated meter enclosures. |
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 W25Q32JVSSIQ | 32 Mbit, 133 MHz max, standard SPI only (no SQI), 8-lead SOIC or WSON package; lacks Security ID and write-suspend | Lower-cost replacement where quad I/O bandwidth and secure ID are not required; no AEC-Q100 qualification | Select when cost-sensitive consumer designs prioritize SPI compatibility over automotive-grade reliability and security |
| Cypress S25FL132K0XMFI010 | 32 Mbit, 108 MHz max, supports both SPI and QPI modes, 8-lead SOIC; includes 64-bit unique ID but no user-programmable Security ID space | Drop-in alternative for legacy Cypress-based platforms; lacks nonvolatile block lock-down and burst wrap-around modes | Choose for migration from Spansion/Cypress designs needing minimal firmware changes and QPI support |
Compared with W25Q32JVSSIQ and S25FL132K0XMFI010, the SST26VF032BT-104I/MF uniquely combines AEC-Q100 Grade 2 qualification, configurable SQI interface, OTP Security ID with user space, and write-suspend - making it optimal for safety-critical, upgradable automotive and industrial firmware storage where deterministic timing and long-term data integrity are mandatory.
Availability
SST26VF032BT-104I/MF is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control modules, and medical diagnostic imaging bootloaders requiring stable component supply across multi-year production cycles.
Supply support for SST26VF032BT-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 Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory solutions for industrial, automotive, and aerospace applications.
The SST26VF032BT-104I/MF belongs to Microchip's Serial Quad I/O™ Flash family, engineered to replace parallel NOR Flash with low-pin-count, high-bandwidth serial interfaces while maintaining robustness for mission-critical firmware storage.
FAQ
What interface modes does the SST26VF032BT-104I/MF support, and how is mode selection controlled?
The SST26VF032BT-104I/MF supports both traditional SPI (x1/x2) and Serial Quad I/O™ (SQI) modes. At power-up, it defaults to SPI mode with WP# and HOLD# enabled (IOC = 0). To enter SQI mode, the host must issue the EQIO command and set the IOC bit (Bit 1) in the Configuration register to '1'. This reconfigures WP#/HOLD# pins as SIO2/SIO3. The SST26VF032BT-104I/MF is factory-configured as the BA variant, meaning IOC = 1 is the intended operational state for quad-mode use.
How does the SST26VF032BT-104I/MF implement hardware write protection, and what registers govern it?
The SST26VF032BT-104I/MF uses the WP# pin in conjunction with the WPEN bit (Config Register Bit 7) and IOC bit (Config Register Bit 1). When IOC = 0 and WPEN = 1, a low WP# signal disables writes to the Block Protection and Configuration registers. WPEN is nonvolatile; once set, it persists across power cycles. The SST26VF032BT-104I/MF's default IOC = 1 disables WP# functionality unless IOC is cleared - ensuring quad-mode readiness while retaining full software-controlled protection via the Block Protection Register.
What is the purpose and structure of the Security ID feature in the SST26VF032BT-104I/MF?
The SST26VF032BT-104I/MF includes a 2-Kbyte Security ID (Sec ID) space divided into a factory-programmed 64-bit unique identifier (immutable) and a user-programmable area. The Sec ID is accessed via PSID (Program Security ID) and LSID (Lockout Security ID) commands. Once LSID is executed, the entire Sec ID space becomes permanently read-only. This enables cryptographic binding of firmware to hardware and prevents cloning - a key requirement for secure boot in automotive and medical applications using the SST26VF032BT-104I/MF.
Can the SST26VF032BT-104I/MF perform concurrent operations, and how is this managed?
Yes, the SST26VF032BT-104I/MF supports write-suspend: an active program or erase operation can be paused using the WRSU command, allowing immediate read access to other memory regions. Resumption uses WRRE. This is tracked via WSP (Write Suspend-Program) and WSE (Write Suspend-Erase) bits in the STATUS register. For the SST26VF032BT-104I/MF, this enables real-time systems to maintain responsiveness during firmware updates - e.g., servicing CAN bus interrupts while erasing a sector.
What package and temperature grade does the SST26VF032BT-104I/MF use, and how is this indicated in the part number?
The SST26VF032BT-104I/MF uses an 8-contact WDFN package (6 mm × 5 mm), denoted by the 'T' suffix. The '104' indicates 104 MHz maximum clock frequency at 2.7–3.6 V, and 'I' specifies Industrial temperature range (–40°C to +85°C). The '/MF' suffix confirms the WDFN package per Microchip's packaging nomenclature. This package supports high-density PCB layouts and meets AEC-Q100 Grade 2 requirements for automotive under-hood use.
SST26VF032BT-104I/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:
- 32Mbit
- Memory Organization:
- 4M 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)
SST26VF032BT-104I/MF FAQ
1.How can I place an order for SST26VF032BT-104I/MF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST26VF032BT-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 SST26VF032BT-104I/MF reliable?
The price and inventory of SST26VF032BT-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 SST26VF032BT-104I/MF is usually 5 days.
3.What payment methods are accepted for SST26VF032BT-104I/MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST26VF032BT-104I/MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST26VF032BT-104I/MF?
SST26VF032BT-104I/MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST26VF032BT-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 SST26VF032BT-104I/MF?
For technical support, including SST26VF032BT-104I/MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST26VF032BT-104I/MF requirements.
6.How does Aetrix verify that SST26VF032BT-104I/MF is sourced from the original manufacturer or authorized distributors?
All SST26VF032BT-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 SST26VF032BT-104I/MF meets industry standards.
7.What is the process for return or replacement of SST26VF032BT-104I/MF?
All SST26VF032BT-104I/MF units undergo pre-shipment inspection (PSI). If there is an issue with SST26VF032BT-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 SST26VF032BT-104I/MF part is unused and in its original packaging.
Return procedure for SST26VF032BT-104I/MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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