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Winbond Electronics Corporation W25Q32BVSSJG
- Part No.:
- W25Q32BVSSJG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q32BVSSJG.pdf
- Description:
- IC FLASH 32MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,720
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Product details
Overview
W25Q32BVSSJG from Winbond is a 32M-bit (4MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 104 MHz dual-output and 80 MHz quad-output clock rates. It features uniform 4KB sectors, 256-byte page programming, and operates from a single 2.7–3.6V supply. It is used for code execution-in-place (XIP), firmware storage, and parameter retention in microcontroller-based embedded systems.
For engineers reviewing the W25Q32BVSSJG datasheet, W25Q32BVSSJG pinout, W25Q32BVSSJG application, or W25Q32BVSSJG equivalent, key selection considerations include Quad SPI enable (QE bit), hardware write protection via /WP and /HOLD pins, sector-level erase granularity, JEDEC ID and SFDP register support, and compatibility with 8-pin SOIC-208mil footprint.
Technical Context
The W25Q32BVSSJG implements a SPI-compatible command set with three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), where Quad mode requires setting the non-volatile QE bit in Status Register-2. Its architecture includes a 256-byte page buffer, 1,024 erasable 4KB sectors, and 64 erasable 64KB blocks.
It supports full instruction-level control including Erase/Program Suspend & Resume, 64-bit unique ID, three 256-byte security registers with OTP locks, and SFDP (Serial Flash Discoverable Parameters) for runtime configuration discovery. Write protection combines software (BP bits, SRP bits) and hardware (/WP pin active-low, top/bottom array control).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 M-bit (4,194,304 bytes), organized as 16,384 × 256-byte pages |
| Interface Support | Standard SPI (CLK, /CS, DI, DO, /WP, /HOLD); Dual SPI (IO0, IO1); Quad SPI (IO0–IO3) with QE=1 |
| Max Clock Frequency | 104 MHz for Dual SPI; 80 MHz for Quad SPI - enabling up to 320 MB/s effective throughput (Quad I/O) |
| Erase Granularity | Uniform 4KB sectors (1,024 total), 32KB blocks (128), 64KB blocks (64), and full-chip erase |
| Write Endurance | ≥100,000 program/erase cycles per sector, with ≥20-year data retention at +25°C |
| Supply Voltage | 2.7 V to 3.6 V single supply; active current ≤4 mA typical, power-down current ≤1 µA typical |
| Operating Temp | −40°C to +85°C industrial temperature range |
Pinout & Package
W25Q32BVSSJG uses an 8-pin SOIC-208mil package (package code SS), with pin 1 = /CS, pin 2 = DO (IO1), pin 3 = /WP (IO2), pin 4 = GND, pin 5 = DI (IO0), pin 6 = CLK, pin 7 = /HOLD (IO3), pin 8 = VCC. In Quad SPI mode, /WP and /HOLD become IO2 and IO3 respectively after QE bit is set.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| /CS (Pin 1) | Chip Select input | Active-low enable: high = device deselected (high-Z outputs, standby current); low = device selected and responsive to commands |
| DO / IO1 (Pin 2) | Data Output / Bidirectional I/O | Unidirectional output in Standard SPI; bidirectional I/O in Dual/Quad SPI - carries read data or address/instruction during writes |
| /WP / IO2 (Pin 3) | Write Protect input / Bidirectional I/O | Hardware lock for status register when QE=0; becomes IO2 in Quad SPI (QE=1), disabling hardware WP function |
| GND (Pin 4) | Ground reference | Primary return path for VCC and all I/O signals; must be low-impedance for stable SPI timing and noise immunity |
| DI / IO0 (Pin 5) | Data Input / Bidirectional I/O | Unidirectional input in Standard SPI; bidirectional I/O in Dual/Quad SPI - carries instructions, addresses, and write data |
| CLK (Pin 6) | Serial clock input | Edge-triggered timing reference: rising edge for input sampling, falling edge for output valid; supports Mode 0 and Mode 3 |
| /HOLD / IO3 (Pin 7) | Hold input / Bidirectional I/O | Pauses ongoing SPI transaction when low (active-low); becomes IO3 in Quad SPI (QE=1), disabling hold functionality |
| VCC (Pin 8) | Power supply | Single 2.7–3.6V supply powering core logic, charge pumps, and I/O buffers; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Quad SPI with QE bit | Enables 4-line data transfer (IO0–IO3) for up to 320 MB/s effective bandwidth; requires non-volatile QE=1 setting in Status Register-2 |
| Continuous Read Mode | Reduces instruction overhead to as few as 8 clocks per 24-bit address, enabling true XIP (execute-in-place) without external RAM buffering |
| Flexible Erase Architecture | Supports 4KB sector, 32KB block, 64KB block, and chip-wide erase - ideal for firmware updates and field-parameter storage |
| Hardware + Software Write Protection | Combines /WP pin control (when QE=0) with BP0–BP2, TB, SEC, CMP, and SRP bits for granular, persistent memory locking |
| Security Registers & Unique ID | Three 256-byte OTP-lockable security registers plus 64-bit factory-programmed unique serial number for device authentication and secure boot |
| SFDP Register Support | JEDEC JESD216-compliant Serial Flash Discoverable Parameters allows host MCU to auto-detect timing, voltage, and feature capabilities at runtime |
Applications
| Industrial PLC Firmware Storage | IoT Edge Device Boot Code |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh environments with wide temperature swings. IC Role / Device Role / Timing Role: Non-volatile code and data storage with XIP-capable Quad SPI interface for deterministic boot latency and field-upgradable firmware. Use Value: 4KB sector erase enables incremental firmware patching without full reflash; −40°C to +85°C rating ensures reliability in uncontrolled enclosures. |
Use Scenario: Hosting bootloader and application firmware on battery-powered wireless sensor nodes requiring low active and deep-sleep current. IC Role / Device Role / Timing Role: Primary boot memory accessed directly by ARM Cortex-M MCU via Quad SPI for fast, low-pin-count initialization. Use Value: 1 µA power-down current extends battery life; SFDP register allows automatic timing calibration across voltage/temperature variations. |
| Automotive Infotainment UI Assets | Medical Diagnostic Instrument Data Logging |
|
Use Scenario: Caching graphical assets (icons, fonts, UI layouts) and localized language strings in automotive head units with strict AEC-Q100 alignment requirements. IC Role / Device Role / Timing Role: High-bandwidth serial flash providing burst-read access to multimedia resources during GUI rendering. Use Value: 80 MHz Quad SPI delivers >320 MB/s effective throughput - sufficient for real-time texture streaming without frame stutter. |
Use Scenario: Recording time-stamped patient waveforms and calibration logs in portable ECG or ultrasound devices with regulatory traceability needs. IC Role / Device Role / Timing Role: Secure, long-retention storage for audit-trail data using OTP-locked security registers and unique device ID. Use Value: 20-year data retention and 100,000-cycle endurance ensure integrity over product lifetime; 64-bit UID supports per-device cryptographic binding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L3233FZNI-10G | 32Mb density, 104MHz max clock, SOIC-8 208-mil, but lacks Quad SPI (supports only Standard/Dual SPI) | Not suitable for XIP or high-throughput continuous read; limited to legacy SPI controllers without Quad I/O support | Select when Quad SPI is unnecessary and cost sensitivity outweighs bandwidth requirements |
| S25FL132K0XMFI010 | 32Mb density, 80MHz Quad SPI, SOIC-8 208-mil, includes built-in ECC and configurable reset polarity | Better suited for safety-critical systems requiring error correction; reset behavior differs (active-high vs. W25Q32BVSSJG's active-low) | Select when system-level ECC or flexible reset signaling is mandatory per functional safety standard |
Compared with MX25L3233FZNI-10G and S25FL132K0XMFI010, W25Q32BVSSJG offers broader instruction compatibility (including Octal Word Read), higher dual-SPI throughput (104 MHz vs. 80 MHz), and integrated SFDP - making it optimal for modern MCU boot loaders requiring auto-negotiated timing and flexible erase policies.
Availability
W25Q32BVSSJG is available at Aetrix Electronics and suitable for industrial automation, IoT edge node design, and automotive infotainment systems requiring stable component supply, long-term lifecycle assurance, and verified SOIC-208mil footprint compatibility.
Supply support for W25Q32BVSSJG 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
Winbond Electronics is a Taiwan-based semiconductor manufacturer specializing in specialty memory solutions, including serial flash, PSRAM, and mobile DRAM, with global manufacturing and quality certifications.
The W25Q series was designed specifically for embedded systems requiring high-speed, low-pin-count non-volatile storage with robust security, XIP capability, and industrial-grade reliability - targeting MCU boot, firmware update, and parameter retention use cases.
FAQ
What is the package type and footprint of W25Q32BVSSJG?
W25Q32BVSSJG uses an 8-pin SOIC-208mil package (package code SS) with standard 1.27 mm pitch and 5.33 mm × 5.33 mm body dimensions. It shares footprint compatibility with other SOIC-8 serial flash devices such as the AT25DF321A and SST25VF032B, enabling drop-in replacement in existing PCB layouts that conform to JEDEC MS-012.
Does W25Q32BVSSJG support execute-in-place (XIP) operation?
Yes, W25Q32BVSSJG supports true XIP via its Continuous Read Mode, which reduces instruction overhead to as few as 8 clock cycles per 24-bit address. When paired with a host MCU supporting Quad SPI memory-mapped mode (e.g., STM32H7, NXP i.MX RT1060), W25Q32BVSSJG enables direct code execution without copying to RAM - critical for deterministic boot and memory-constrained designs.
How is Quad SPI enabled on W25Q32BVSSJG?
Quad SPI is enabled by setting the Quad Enable (QE) bit in Status Register-2 (bit 1). This is done via the Write Status Register (01h) instruction after issuing Write Enable (06h). Once QE=1, pins /WP (pin 3) and /HOLD (pin 7) become IO2 and IO3, respectively - and Standard/Dual SPI hold functionality is disabled. The change persists across power cycles as QE is non-volatile.
What write protection mechanisms does W25Q32BVSSJG provide?
W25Q32BVSSJG provides layered write protection: hardware-level via the /WP pin (active-low, functional only when QE=0), and software-level via Status Register bits BP2–BP0, TB, SEC, CMP, and SRP0/SRP1. These allow locking individual 4KB sectors, top/bottom halves, or the entire array - with SRP bits preventing further status register modification until cleared via Write Enable.
Is W25Q32BVSSJG compatible with JEDEC-standard identification and configuration protocols?
Yes, W25Q32BVSSJG fully supports JEDEC JEP106 manufacturer ID (EFh), JEDIC device ID (4016h), and JESD216-compliant SFDP (Serial Flash Discoverable Parameters) register. Host systems can read the SFDP table at address 000000h to auto-detect supported instructions, timing parameters, erase block sizes, and voltage ranges - eliminating hardcoded configuration dependencies.
W25Q32BVSSJG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 32Mbit
- Memory Organization:
- 4M x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 50µs, 3ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q32BVSSJG FAQ
1.How can I place an order for W25Q32BVSSJG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q32BVSSJG 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 W25Q32BVSSJG reliable?
The price and inventory of W25Q32BVSSJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q32BVSSJG is usually 5 days.
3.What payment methods are accepted for W25Q32BVSSJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q32BVSSJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q32BVSSJG?
W25Q32BVSSJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q32BVSSJG 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 W25Q32BVSSJG?
For technical support, including W25Q32BVSSJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q32BVSSJG requirements.
6.How does Aetrix verify that W25Q32BVSSJG is sourced from the original manufacturer or authorized distributors?
All W25Q32BVSSJG 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 W25Q32BVSSJG meets industry standards.
7.What is the process for return or replacement of W25Q32BVSSJG?
All W25Q32BVSSJG units undergo pre-shipment inspection (PSI). If there is an issue with W25Q32BVSSJG, 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 W25Q32BVSSJG part is unused and in its original packaging.
Return procedure for W25Q32BVSSJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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