W25Q32JVSSIQ
The W25Q32JVSSIQ is a 32M-bit (4MB) serial NOR Flash memory from Winbond's industry-leading spiFlash family. With standard SPI, Dual SPI, and Quad SPI interfaces operating at up to 133 MHz, it delivers fast code execution, reliable firmware storage, and efficient data logging in a compact 8-pin SOIC package. Over 100,000 program/erase cycles and 20+ year data retention make it the trusted choice for embedded boot code, IoT firmware, and industrial control systems.
Product Specifications
W25Q32JVSSIQ — 32M-bit Serial NOR Flash Memory by Winbond
The W25Q32JVSSIQ is a 32M-bit (4MB) serial NOR Flash memory from Winbond's industry-leading spiFlash family. With standard SPI, Dual SPI, and Quad SPI interfaces operating at up to 133 MHz, it delivers fast code execution, reliable firmware storage, and efficient data logging in a compact 8-pin SOIC package. Over 100,000 program/erase cycles and 20+ year data retention make it the trusted choice for embedded boot code, IoT firmware, and industrial control systems.
Quick Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Winbond Electronics |
| Part Number | W25Q32JVSSIQ |
| Mouser # | 454-W25Q32JVSSIQ |
| Series | W25Q32JV — spiFlash Family |
| Memory Type | NOR Flash (Non-Volatile) |
| Memory Density | 32 M-bit (4 MB) |
| Organization | 4M × 8 bits / 16,384 Pages × 256 Bytes |
| Interface | Standard SPI / Dual SPI / Quad SPI |
| Max Clock Frequency | 133 MHz (Quad SPI Read) |
| Access Time | 6 ns |
| Supply Voltage | 2.7 V to 3.6 V |
| Read Current (Max) | 25 mA |
| Standby Current | 1 µA (Typical) |
| Power-Down Current | < 1 µA |
| Sector Size | 4 KB Uniform Sector Architecture |
| Block Size | 32 KB / 64 KB (Flexible Erase) |
| Program/Erase Cycles | 100,000 Cycles per Sector (Minimum) |
| Data Retention | 20+ Years |
| Page Program Time | 0.4 ms (Typical, 256 Bytes) |
| Sector Erase Time | 45 ms (Typical, 4 KB) |
| Chip Erase Time | 10 s (Typical, 32 M-bit) |
| Package | SOIC-8 (208 mil / 5.30 mm Width) |
| Operating Temperature | −40°C to +85°C (Industrial) |
| Software Protection | Block Protect (BP) Bits, Status Register Lock, OTP Security Register |
| Hardware Protection | WP# (Write Protect) Pin |
| Unique ID | 64-Bit Factory-Programmed Unique Serial Number |
| Mounting Type | Surface Mount (SMD/SMT) |
| Packaging | Tube (SSIQ Suffix); TR variant = Tape & Reel |
| RoHS | Compliant |
| Backward Compatible | Yes — with W25Q32BV, W25Q32FV, and previous generations |
Product Overview
The W25Q32JVSSIQ is part of Winbond's W25Q32JV series — the third generation of the company's perennially popular 32M-bit serial NOR Flash line. It builds on the proven W25Q32BV and W25Q32FV architectures with process improvements that deliver higher performance at the same 3V operating voltage.
Unlike parallel NOR Flash which consumes dozens of pins on your MCU, the W25Q32JVSSIQ uses as few as 4 signal lines in standard SPI mode — CS#, CLK, DI, and DO — freeing GPIO for other peripherals. When higher throughput is required, switch to Quad SPI mode for 532 Mbit/s equivalent bandwidth (133 MHz × 4 data lines), enabling execute-in-place (XiP) for direct code execution from Flash.
The Uniform 4 KB Sector Architecture ensures fine-grained erase granularity, minimizing wear leveling overhead and simplifying firmware update logic — especially valuable in OTA (over-the-air) update scenarios where only a small portion of code needs rewriting.
Key Features & Benefits
Triple SPI Interface — One Footprint, Three Performance Levels
The W25Q32JVSSIQ supports three SPI modes on the same 8-pin SOIC footprint, giving designers flexibility without hardware changes:
Standard SPI (1-bit) — Command, address, and data on single DI/DO lines. Ideal for low-speed MCUs and boot ROM applications where pin count is the priority.
Dual SPI (2-bit) — Doubles throughput by using two bidirectional IO lines. Common in mid-range embedded systems balancing cost and speed.
Quad SPI (4-bit) — Four IO lines deliver up to 532 Mbps equivalent throughput at 133 MHz. Enables true XiP code execution and rapid firmware loading on high-performance ARM Cortex-M and RISC-V processors.
Ultra-Low Power Profile
With 25 mA active read current, 1 µA typical standby, and sub-1 µA deep power-down, the W25Q32JVSSIQ is ideally suited for battery-powered and energy-harvesting devices:
IoT sensor nodes running from coin cells or Li-SOCl₂ batteries
Wearable medical devices where every microamp impacts battery life
Smart meters and data loggers requiring years of unattended operation
Energy-harvesting systems with intermittent power (solar, vibration, RF)
Industrial-Grade Endurance & Retention
Each 4 KB sector withstands a minimum of 100,000 program/erase cycles, with data retention guaranteed for more than 20 years. Combined with the Uniform Sector architecture, this enables robust wear-leveling algorithms that extend effective device lifetime far beyond the per-sector rating in typical use cases (firmware storage, event logging, configuration saves).
Comprehensive Data Protection
Winbond builds multiple protection layers into the W25Q32JV:
Software Block Protection (BP0–BP3) — Hardware-write-protect any combination of blocks using Status Register bits. Once locked, protected sectors resist both program and erase commands until a power cycle and register unlock sequence.
Status Register Lock (SRP0/SRP1) — Prevent accidental or malicious modification of protection settings.
WP# Hardware Pin — Assert WP# low to instantly block writes to the Status Register, providing a physical lockdown mechanism for mission-critical boot sectors.
3×256-Byte OTP Security Registers — Permanent One-Time Programmable area for serial numbers, MAC addresses, security keys, or calibration data that must survive even a full chip erase.
64-Bit Unique ID — Factory-programmed, read-only serial number for device authentication and supply-chain traceability.
Backward Compatible & Future-Proof
The W25Q32JV is designed as a drop-in upgrade for Winbond's W25Q32BV and W25Q32FV families. The same command set and Status Register map means no firmware changes are required when migrating existing designs — simply swap the BOM line item. For new designs, the W25Q32JV offers improved process margins and long-term availability commitment from Winbond.
Flexible Erase Architecture
Multiple erase granularities let firmware optimize for speed vs precision:
| Erase Command | Size | Typical Time | Use Case |
|---|---|---|---|
| Sector Erase (20h) | 4 KB | 45 ms | OTA firmware delta updates, parameter saves |
| Block Erase (32 KB) (52h) | 32 KB | 120 ms | Application partition management |
| Block Erase (64 KB) (D8h) | 64 KB | 150 ms | Large firmware image replacement |
| Chip Erase (C7h / 60h) | 32 M-bit | 10 s | Full device re-provisioning |
Target Applications
Boot Code & Firmware Storage
Primary boot Flash for MCUs, MPUs, and FPGAs. The fast Quad SPI read (133 MHz) enables direct XiP code execution, eliminating the need for shadow RAM. Uniform 4 KB sectors streamline OTA firmware update logic — erase only the modified pages, not the entire image.
IoT & Wireless Sensor Nodes
Combined sub-µA power-down current, small SOIC-8 footprint, and robust data retention make the W25Q32JVSSIQ the default Flash choice for BLE, Wi-Fi, LoRaWAN, and Zigbee end devices. Store sensor calibration tables, network credentials, and firmware images in one chip.
Industrial Control & Automation
PLCs, motor drives, and industrial HMIs rely on NOR Flash for deterministic boot times and bit-level reliability. The −40°C to +85°C operating range and 20-year retention meet the lifecycle requirements of industrial equipment deployed in harsh environments.
Consumer Electronics
Set-top boxes, smart TVs, gaming peripherals, and home automation hubs use W25Q32JV for firmware and user settings storage. The backward-compatible command set simplifies multi-sourcing across product generations.
Automotive & Telematics
Dashboard MCU boot Flash, OBD-II dongle firmware, and telematics data logging. The 100K P/E cycle endurance supports frequent event logging without premature wear-out.
Medical & Wearable Devices
Glucose monitors, pulse oximeters, and wearable ECGs store firmware and patient data logs in the W25Q32JV. The OTP security register provides tamper-resistant device serialization for regulatory traceability.
W25Q32JVSSIQ vs Competing 32M-bit NOR Flash Parts
| Feature | W25Q32JVSSIQ (Winbond) | W25Q32BVSSIG (Winbond, Prev Gen) | MX25L3233F (Macronix) | GD25Q32E (GigaDevice) |
|---|---|---|---|---|
| Density | 32 M-bit (4 MB) | 32 M-bit (4 MB) | 32 M-bit (4 MB) | 32 M-bit (4 MB) |
| Max Clock (Quad SPI) | 133 MHz | 104 MHz | 133 MHz | 120 MHz |
| Interface | SPI / Dual / Quad | SPI / Dual / Quad | SPI / Dual / Quad | SPI / Dual / Quad |
| Voltage Range | 2.7–3.6 V | 2.7–3.6 V | 2.7–3.6 V | 2.7–3.6 V |
| Active Read Current | 25 mA | 25 mA | 20 mA | 25 mA |
| Standby Current | 1 µA | 5 µA | 10 µA | 5 µA |
| Sector Size | 4 KB Uniform | 4 KB Uniform | 4 KB Uniform | 4 KB Uniform |
| P/E Cycles | 100,000 | 100,000 | 100,000 | 100,000 |
| Data Retention | 20+ Years | 20 Years | 20 Years | 20 Years |
| Package | SOIC-8 (208 mil) | SOIC-8 (208 mil) | SOP-8 (200 mil) | SOP-8 (208 mil) |
| Unique ID / OTP | 64-bit UID + 3×256B OTP | 64-bit UID + 3×256B OTP | 64-bit UID + 4K-bit OTP | 128-bit UID + 3×256B OTP |
| Backward Compatible With | W25Q32BV, W25Q32FV | W25Q32BV only | MX25L32xx family | GD25Q32B |
| Temperature Range | −40 ~ +85°C | −40 ~ +85°C | −40 ~ +85°C | −40 ~ +85°C |
Bottom line: The W25Q32JVSSIQ delivers the highest Quad SPI clock speed (133 MHz) with the lowest standby current (1 µA) among 32M-bit NOR Flash devices in the SOIC-8 form factor. Its drop-in backward compatibility with two previous Winbond generations simplifies BOM migration, while the 64-bit unique ID and OTP registers address modern security and traceability requirements.
Frequently Asked Questions
What is the difference between W25Q32JVSSIQ and W25Q32JVSSIQ TR?
Electrically identical devices. The "SSIQ" suffix denotes SOIC-8 package, Tube (stick) packaging. The "TR" variant is the same die in Tape & Reel packaging for automated pick-and-place assembly. For prototyping and small batches, order SSIQ (Tube); for volume production, select SSIQ TR (Tape & Reel).
What is the difference between W25Q32JVSSIQ and W25Q32BVSSIG?
The W25Q32JV is the third-generation successor to the W25Q32BV (first-gen) and W25Q32FV (second-gen). Key improvements: higher Quad SPI clock (133 MHz vs 104 MHz), lower standby current (1 µA vs 5 µA), and full backward compatibility — meaning the JV can drop into a BV-designed board without firmware changes. Winbond recommends the JV series for all new designs.
How do I interface the W25Q32JVSSIQ with Arduino or ESP32?
The W25Q32JVSSIQ connects via SPI — 4 to 6 wires depending on mode (CS#, CLK, DI, DO, plus WP# and HOLD# if used). For Arduino, use the SPIMemory library by Marzogh; for ESP32/ESP8266, the built-in ESP8266AVRISP or LittleFS framework supports Winbond Flash directly. The device operates at 3.3 V logic — use level shifters if your MCU runs at 5 V.
Can I use the W25Q32JVSSIQ for execute-in-place (XiP)?
Yes. In Quad SPI Fast Read mode (EBh command) at 133 MHz, the W25Q32JVSSIQ delivers up to 532 Mbit/s equivalent bandwidth — fast enough for XiP code execution on entry-level to mid-range MCUs. For high-performance processors (Cortex-M7, RISC-V at 400+ MHz), consider the W25Q32JV's larger-density siblings (W25Q64JV or W25Q128JV) or Winbond's HyperBus parts for higher throughput.
What is the minimum order quantity (MOQ)?
Contact SUPERB Automation for a tailored quote. We support prototype quantities (Tube) through full production volumes (Tape & Reel). Send your BOM to pcba@superb-tech.com — we quote within hours. For PCBA projects, include Gerber files for a complete turnkey assembly quote.
Is the W25Q32JVSSIQ affected by the global NOR Flash shortage?
Winbond maintains multiple fabrication sites and has publicly committed to long-term availability of the W25Q32JV series. SUPERB Automation works directly with trusted Winbond distribution channels to secure stable supply and competitive pricing. Contact us for current lead times and volume availability.
What are the marking and date code conventions?
The W25Q32JVSSIQ is laser-marked with Winbond's part number (W25Q32JVSSIQ), date code (YYWW format), lot number, and pin-1 indicator. The 64-bit unique ID is electronically readable via command 4Bh — it is not printed on the package. For full traceability, request lot and date code information with your order.
Ordering Information
| Orderable Part Number | Package | Packaging | Temperature Range |
|---|---|---|---|
| W25Q32JVSSIQ | SOIC-8 (208 mil) | Tube (90 pcs/tube) | −40°C to +85°C |
| W25Q32JVSSIQ TR | SOIC-8 (208 mil) | Tape & Reel | −40°C to +85°C |
| W25Q32JVSTIQ | SOP-8 (150 mil) | Tube | −40°C to +85°C |
| W25Q32JVSFIQ | SOIC-16 (300 mil) | Tube | −40°C to +85°C |
Design Resources
Datasheet: W25Q32JV Datasheet (Rev E or later) — 76 pages covering all package variants, command set, AC/DC characteristics, and application notes
Application Note: Winbond AN-003 — "Migration Guide from W25Q32BV/FV to W25Q32JV"
IBIS Model: Available from Winbond for SI simulation
Footprint / Symbol: Available from Ultra Librarian, SnapEDA, and Octopart in 22+ CAD formats (Altium, Eagle, KiCad, OrCAD)
Reference Driver: Winbond provides reference C drivers for STM32, NXP, and Renesas MCU families
Request a Quote
SUPERB Automation supplies genuine Winbond W25Q32JVSSIQ NOR Flash memory with full traceability and competitive lead times. Whether you need 90 pieces (1 tube) for prototyping or 100,000 for production, we deliver.
Send your BOM or inquiry to pcba@superb-tech.com — we quote within hours. For EMS/PCBA projects, include your Gerber files for a complete turnkey assembly quote.
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