My Inquiry
My Account
Winbond Electronics Corporation W25Q16JWSSAQ
- Part No.:
- W25Q16JWSSAQ
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
W25Q16JWSSAQ.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,605
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
W25Q16JWSSAQ from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock rate, 66MB/s continuous read throughput, and uniform 4KB sector erase architecture - deployed in embedded boot code storage, firmware update partitions, and XIP-capable microcontroller systems.
For engineers reviewing the W25Q16JWSSAQ datasheet, W25Q16JWSSAQ pinout, W25Q16JWSSAQ application, or W25Q16JWSSAQ equivalent, this page delivers verified pin functions, JEDEC-compliant ID support, SFDP register access, 64-bit unique serial number, and hardware/software write protection schemes critical for industrial-grade firmware integrity and secure boot design.
Technical Context
The W25Q16JWSSAQ implements a quad I/O SPI interface requiring non-volatile Quad Enable (QE) bit set in Status Register-2 to activate IO2 (/WP) and IO3 (/HOLD) pins; it supports SPI modes 0 and 3, with CLK idle low (Mode 0) or high (Mode 3), and maintains full instruction compatibility across Standard/Dual/Quad SPI command sets including Fast Read Quad I/O (EBh) and Quad Input Page Program (32h).
Its memory array comprises 8192 × 256-byte pages organized into 512 erasable 4KB sectors and 32 erasable 64KB blocks, enabling flexible partitioning for code + data storage; erase/program suspend/resume functionality allows background operations without halting host execution, and three 256-byte security registers support OTP-locked configuration and credential storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8192 × 256-byte pages |
| Supply Voltage | 1.65V to 1.95V - enables direct integration with 1.8V logic domains without level shifting |
| Max Clock Frequency | 133 MHz for Quad I/O - delivers 532 MB/s theoretical bandwidth (133 MHz × 4 lines) |
| Erase Granularity | Uniform 4KB sectors, 32KB blocks, 64KB blocks - supports fine-grained firmware update partitioning |
| Endurance & Retention | 100,000 program/erase cycles minimum; >20 years data retention at 25°C |
| Operating Temperature | –40°C to +105°C - qualified for Industrial Plus grade applications |
| Unique Identifier | 64-bit factory-programmed serial number - enables device-level traceability and secure provisioning |
Pinout & Package
W25Q16JWSSAQ is supplied in an 8-pin SOIC 208-mil package (Package Code SS), with gull-wing leads, 1.27 mm pitch, and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable signal; places DO/IO pins in high-Z when deasserted; must track VCC during power-up/down |
| 2 DO (IO1) | Data Output / Bidirectional I/O | Standard SPI output (DO); becomes IO1 in Dual/Quad mode; used for Fast Read Dual/Quad Output instructions |
| 3 /WP (IO2) | Write Protect Input / Bidirectional I/O | Hardware write protect for status register when QE=0; becomes IO2 in Quad mode (QE=1) |
| 4 GND | Ground Reference | Primary return path for VCC supply and all I/O signals; requires low-impedance PCB connection |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Standard SPI input (DI); becomes IO0 in Dual/Quad mode; carries instructions, addresses, and write data |
| 6 CLK | Serial Clock Input | Edge-triggered timing reference; supports Mode 0 (CLK idle low) and Mode 3 (CLK idle high) |
| 7 /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transfer when asserted low; becomes IO3 in Quad mode (QE=1); not available on WLCSP/USON packages |
| 8 VCC | Power Supply | 1.65–1.95V core supply; internal LDO regulates internal circuitry; decoupling capacitor required per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad SPI Command Set | Fully backward-compatible instruction set including Fast Read Dual I/O (BBh), Fast Read Quad I/O (EBh), and Quad Input Page Program (32h) |
| Erase/Program Suspend | Allows host to pause active erase or program operation and service higher-priority tasks, then resume without data loss |
| Three Security Registers | 256-byte × 3 OTP-lockable registers for storing cryptographic keys, calibration data, or secure boot parameters |
| Individual Block Lock | 62 × 64KB blocks + 32 × 4KB top/bottom sectors each have dedicated lock bits - enables granular, persistent firmware partition protection |
| SFDP Register Support | JESD216-compliant Serial Flash Discoverable Parameters register enables automatic driver configuration and vendor-agnostic initialization |
Applications
| Boot Code Storage | Firmware Update Partition |
|---|---|
|
Use Scenario: Storing primary bootloader and initial firmware image for ARM Cortex-M or RISC-V microcontrollers. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP capability via Quad SPI Fast Read instructions. Use Value: Enables zero-latency execution of startup code directly from flash, reducing RAM footprint and boot time by eliminating copy-to-RAM step. |
Use Scenario: Dedicated 64KB block reserved for over-the-air (OTA) firmware updates in industrial gateways. IC Role / Device Role / Timing Role: Isolated, individually lockable memory region for atomic firmware patching. Use Value: Prevents partial writes during power loss using sector-level erase/program sequencing and Individual Block Lock enforcement. |
| Secure Provisioning | Configuration & Calibration Data |
|
Use Scenario: Storing device-specific cryptographic keys and certificate chains during manufacturing test. IC Role / Device Role / Timing Role: OTP-protected security register storage accessed only after hardware reset and unlock sequence. Use Value: Ensures private keys remain inaccessible post-provisioning via SRP/SRL bits and Security Register Lock (LB1–LB3) configuration. |
Use Scenario: Retaining sensor calibration coefficients and system configuration parameters across power cycles. IC Role / Device Role / Timing Role: 4KB sector-erasable non-volatile storage with software/hardware write protection. Use Value: Guarantees parameter persistence while preventing accidental overwrite via /WP pin assertion and BP[2:0] status register control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX25L1633FZNI-10G | 3V supply (2.7–3.6V); no Quad Enable bit; supports only Standard/Dual SPI; lacks SFDP and Unique ID | Not suitable for 1.8V systems; cannot replace W25Q16JWSSAQ in XIP or high-speed Quad I/O designs | Select only if operating voltage is ≥2.7V and Quad SPI is unnecessary; verify pinout compatibility (SOIC-8 same footprint) |
| S25FL132K0XMFI013 | 1.8V supply; 16Mb density; supports Quad SPI but uses different status register layout and lacks Individual Block Lock feature | Compatible for basic code storage but lacks granular firmware partitioning and security register OTP capability | Use where JEDEC ID/SFDP interoperability is sufficient and advanced write protection is not required |
Compared with MX25L1633FZNI-10G and S25FL132K0XMFI013, the W25Q16JWSSAQ uniquely combines 1.8V operation, Quad I/O performance, SFDP discoverability, 64-bit UID, and individual block locking - making it the only option among the three qualified for secure, high-speed, industrial-plus firmware storage with zero-layout change migration from legacy W25QxxJW variants.
Availability
W25Q16JWSSAQ is available at Aetrix Electronics and suitable for industrial control panels, automotive telematics modules, and medical diagnostic devices requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.
Supply support for W25Q16JWSSAQ 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 global semiconductor manufacturer specializing in specialty DRAM, mobile DRAM, and serial flash memory solutions since 1987.
The W25QxxJW family was designed specifically for industrial-plus and extended-temperature embedded systems requiring reliable, high-speed, secure code and data storage with minimal board space and power consumption - targeting applications where firmware integrity and field-upgradeability are mission-critical.
FAQ
What is the operating voltage range for the W25Q16JWSSAQ?
The W25Q16JWSSAQ operates from 1.65V to 1.95V, making it compatible with 1.8V logic families without level translation. This narrow supply range ensures low dynamic power consumption and stable operation across its –40°C to +105°C industrial-plus temperature rating. The device includes internal voltage monitoring that holds it in reset until VCC exceeds the valid threshold (VWI), preventing spurious writes during power ramp-up or brownout conditions.
Does the W25Q16JWSSAQ support Quad SPI mode out of the box?
No - the W25Q16JWSSAQ requires the Quad Enable (QE) bit in Status Register-2 to be set to '1' before Quad SPI operation is activated. By default, QE = 0, so IO2 (/WP) and IO3 (/HOLD) function as hardware write protect and hold inputs. A Write Status Register-2 (31h) instruction must be issued after Write Enable (06h) to configure QE; once set, /WP and /HOLD become IO2 and IO3 for full Quad I/O communication.
How many program/erase cycles does the W25Q16JWSSAQ guarantee?
The W25Q16JWSSAQ guarantees a minimum of 100,000 program/erase cycles per sector, validated across its full operating temperature range. This endurance rating applies uniformly to all 4KB sectors, 32KB blocks, and 64KB blocks. Endurance is maintained even under worst-case conditions including repeated partial-page programming and mixed-sector erase patterns, supporting long-life deployments in field-upgradable equipment.
What unique identifiers does the W25Q16JWSSAQ provide?
The W25Q16JWSSAQ provides a factory-programmed, globally unique 64-bit serial number accessible via the Read Unique ID Number (4Bh) instruction. It also supports JEDEC-standard Manufacturer ID (9Fh) and Device ID (90h/92h/94h) reads. These identifiers enable secure device authentication, firmware binding, and production traceability - critical for anti-counterfeiting and regulatory compliance in medical and industrial systems.
Can the W25Q16JWSSAQ be used for secure key storage?
Yes - the W25Q16JWSSAQ includes three dedicated 256-byte Security Registers that support One-Time-Programmable (OTP) locking via Status Register-3 LB1–LB3 bits. Once locked, these registers cannot be rewritten without a full chip erase, and their contents are protected from read-out unless explicitly enabled. This makes the W25Q16JWSSAQ suitable for storing cryptographic keys, calibration secrets, or secure boot manifests in tamper-resistant embedded systems.
W25Q16JWSSAQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- SPI - Quad I/O, QPI, DTR
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- 6 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q16JWSSAQ FAQ
1.How can I place an order for W25Q16JWSSAQ through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16JWSSAQ 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 W25Q16JWSSAQ reliable?
The price and inventory of W25Q16JWSSAQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16JWSSAQ is usually 5 days.
3.What payment methods are accepted for W25Q16JWSSAQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16JWSSAQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16JWSSAQ?
W25Q16JWSSAQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16JWSSAQ 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 W25Q16JWSSAQ?
For technical support, including W25Q16JWSSAQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16JWSSAQ requirements.
6.How does Aetrix verify that W25Q16JWSSAQ is sourced from the original manufacturer or authorized distributors?
All W25Q16JWSSAQ 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 W25Q16JWSSAQ meets industry standards.
7.What is the process for return or replacement of W25Q16JWSSAQ?
All W25Q16JWSSAQ units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16JWSSAQ, 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 W25Q16JWSSAQ part is unused and in its original packaging.
Return procedure for W25Q16JWSSAQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q16JWSSAQ Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
