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Winbond Electronics Corporation W25Q16JWSNIM
- Part No.:
- W25Q16JWSNIM
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
W25Q16JWSNIM.pdf
- Description:
- IC FLASH 16MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,999
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Product details
Overview
W25Q16JWSNIM from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory with Dual/Quad SPI interface, supporting up to 133MHz Quad I/O clocking for 66MB/s continuous read throughput. It features uniform 4KB sectors (512 total), 32KB/64KB blocks, and operates across –40°C to +85°C industrial temperature range. It is used for code execution (XIP), firmware storage, and parameter retention in space-constrained embedded systems.
For engineers reviewing the W25Q16JWSNIM datasheet, W25Q16JWSNIM pinout, W25Q16JWSNIM application, or W25Q16JWSNIM equivalent, key selection criteria include Quad SPI enable (QE bit), hardware /WP and /HOLD pin support, 1.65–1.95V supply compatibility, sector-level lock granularity, and JEDEC SFDP register compliance for auto-configuration.
Technical Context
The W25Q16JWSNIM implements a standard SPI bus with optional Dual/Quad I/O modes enabled via non-volatile QE bit in Status Register-2. In Quad mode, pins /WP and /HOLD become IO2 and IO3, enabling four-bit-wide data transfers on rising/falling CLK edges. It supports SPI Modes 0 and 3, with full instruction set including Fast Read Quad I/O (EBh), Erase Suspend/Resume, and individual 4KB sector locks.
Its architecture includes three status registers (SR1–SR3) with volatile/non-volatile control bits for write protection (BP2–BP0, TB, SEC, CMP), security register locking (LB3–LB1), output driver strength (DRV1/DRV0), and erase/program suspend status (SUS). The device integrates a 64-bit unique ID and three 256-byte security registers for secure boot and firmware authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 M-bit (2,097,152 bytes), organized as 8192 × 256-byte programmable pages |
| Supply Voltage | 1.65 V to 1.95 V - enables direct integration into 1.8V logic domains without level shifting |
| Quad SPI Clock Rate | Up to 133 MHz - delivers 532 Mbps effective bandwidth (133 MHz × 4 bits) for XIP or fast code load |
| Erase Granularity | 4 KB sectors (512), 32 KB blocks (32), 64 KB blocks (16) - supports fine-grained firmware partitioning |
| Endurance & Retention | 100,000 program/erase cycles minimum; >20 years data retention at 85°C - suitable for field-upgradable systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade operation without derating |
| Power-Down Current | 0.1 µA typical - reduces system standby power in battery-backed or energy-sensitive applications |
Pinout & Package
W25Q16JWSNIM uses an 8-pin SOIC 150-mil package (package code SN), with exposed pad not present. Pin functions are electrically identical across SOIC, WSON, and WLCSP variants per Winbond documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; high-impedance DO/IOs 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; supports Fast Read Dual/Quad 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 signal return; decoupling capacitor must be placed adjacent to this pin |
| 5 DI (IO0) | Data Input / Bidirectional I/O | Standard SPI input (DI); becomes IO0 in Dual/Quad mode; used for all instruction/address/data writes |
| 6 CLK | Serial Clock Input | Edge-triggered timing reference; supports SPI Modes 0 and 3; max 133 MHz in Quad I/O mode |
| 7 /HOLD (IO3) | Hold Input / Bidirectional I/O | Pauses ongoing SPI transfer when low; becomes IO3 in Quad mode (QE=1); not available in Quad if /HOLD function required |
| 8 VCC | Power Supply | 1.65–1.95 V core supply; requires local 100 nF ceramic decoupling between VCC and GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad SPI Interface | Enables 2×–6× faster read throughput vs standard SPI; configurable via non-volatile QE bit in SR2 |
| Individual Sector Lock | Each 4KB sector has dedicated lock bit; prevents accidental erase/program even when global WP is inactive |
| JEDEC SFDP Register | Provides standardized, host-readable flash parameter table - eliminates hard-coded timing/config in bootloader |
| 64-Bit Unique ID | Factory-programmed per-device serial number - enables secure device identity binding in firmware validation |
| Erase/Program Suspend | Allows temporary pause of long erase/program operations to service time-critical reads - improves real-time responsiveness |
| Three Security Registers | 256-byte × 3 OTP-capable registers - store cryptographic keys, certificates, or calibration data with hardware lock enforcement |
Applications
| IoT Edge Node Firmware Storage | Industrial PLC Boot Memory |
|---|---|
|
Use Scenario: Storing signed firmware images and OTA update payloads in battery-powered wireless sensors with limited PCB area. IC Role / Device Role / Timing Role: Primary non-volatile code storage with XIP capability and secure boot verification via unique ID and security registers. Use Value: 4KB sector erase enables atomic firmware updates; 0.1µA power-down current extends battery life; SFDP simplifies bootloader portability across platforms. |
Use Scenario: Hosting real-time OS kernel and configuration data in DIN-rail mounted programmable logic controllers operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Industrial-grade boot memory with guaranteed 100K endurance and 20-year data retention under thermal stress. Use Value: –40°C to +85°C rating ensures reliability; individual sector locks prevent corruption during brown-out recovery; /WP pin provides hardware fail-safe write protection. |
| Medical Diagnostic Device Parameter Bank | Automotive ADAS Camera Module Code Storage |
|
Use Scenario: Retaining calibrated sensor offsets, user preferences, and audit logs in portable ultrasound equipment requiring traceable data integrity. IC Role / Device Role / Timing Role: Secure parameter storage with tamper-resistant locking using security registers and OTP bits. Use Value: Three 256-byte security registers store encrypted calibration keys; LB1–LB3 OTP bits prevent reprogramming of critical parameters post-certification. |
Use Scenario: Storing camera ISP firmware and lens correction tables in automotive surround-view systems subject to AEC-Q100 stress screening. IC Role / Device Role / Timing Role: High-speed code storage supporting 133MHz Quad I/O for sub-100ms boot latency in safety-critical vision processing. Use Value: 66MB/s read throughput meets ADAS boot timing budgets; uniform 4KB sectors align with AUTOSAR memory partitioning requirements. |
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 |
|---|---|---|---|
| MX25L1633FZUI-12G | 3V supply (2.7–3.6V); no /HOLD pin in 8-pin SOIC; lacks SFDP register and unique ID | Requires level-shifting in 1.8V systems; no standardized auto-configuration; less suitable for secure boot | Select only if legacy 3V design compatibility is mandatory and security/SFDP features are unused. |
| S25FL116K0XMFI011 | 1.8V supply; 16Mb density; supports Quad SPI but max 80MHz clock; no individual sector lock bits | Lower throughput limits XIP performance; lacks per-sector hardware lock - relies on software-only protection | Prefer where cost sensitivity outweighs need for 133MHz speed or granular hardware write protection. |
Compared with W25Q16JWSNIM, MX25L1633FZUI-12G requires voltage translation and omits critical security primitives, while S25FL116K0XMFI011 trades 33% lower bandwidth and no hardware sector locking for Cypress's FlashFX Pro ecosystem support - making W25Q16JWSNIM optimal for new 1.8V industrial designs demanding speed, security, and configurability.
Availability
W25Q16JWSNIM is available at Aetrix Electronics and suitable for industrial control systems, medical edge devices, and automotive camera modules requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature grade performance.
Supply support for W25Q16JWSNIM 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 SPI NOR/NAND flash, RAM, and TrustME® secure memory products.
The W25Q16JW series is part of Winbond's high-performance SpiFlash family, designed specifically for embedded systems needing reliable, low-voltage, high-speed serial code storage with advanced security and configurability.
FAQ
What is the supply voltage range supported by the W25Q16JWSNIM?
The W25Q16JWSNIM operates from 1.65 V to 1.95 V, making it compatible with standard 1.8V logic interfaces without external level shifters. This narrow range ensures stable internal voltage regulation and low-power operation, with typical power-down current of 0.1 µA. Operation outside this window may cause undefined behavior or failure to execute commands - always verify VCC stability within spec during power-up sequencing.
Does the W25Q16JWSNIM support Quad SPI mode, and how is it enabled?
Yes, the W25Q16JWSNIM supports Quad SPI mode via the non-volatile Quad Enable (QE) bit in Status Register-2. To activate Quad I/O, issue Write Status Register-2 (31h) with QE=1. Once set, /WP and /HOLD pins become IO2 and IO3, enabling four-bit-wide data transfers using instructions like Fast Read Quad I/O (EBh). The QE bit persists across power cycles unless explicitly cleared.
How many 4KB sectors does the W25Q16JWSNIM contain, and what is their protection capability?
The W25Q16JWSNIM contains 512 uniform 4KB sectors. Each sector can be individually locked using the Individual Block Lock feature (36h/39h instructions), preventing erase or program operations regardless of /WP pin state or status register settings. When powered on, all lock bits default to '1', providing factory-default write protection until explicitly unlocked - a critical safeguard for pre-programmed firmware images.
What is the purpose of the 64-bit Unique ID in the W25Q16JWSNIM, and how is it accessed?
The W25Q16JWSNIM includes a factory-programmed, unalterable 64-bit Unique ID used for device identification and secure boot binding. It is read using the Read Unique ID Number instruction (4Bh), which returns the value over standard or Quad I/O. This ID enables cryptographic key derivation, anti-cloning measures, and firmware-to-hardware attestation - essential for medical, industrial, and automotive applications requiring traceability and authenticity.
Can the W25Q16JWSNIM be used in systems requiring JEDEC-standardized flash configuration?
Yes, the W25Q16JWSNIM implements the JEDEC JESD216 standard via its Serial Flash Discoverable Parameters (SFDP) register, accessible using instruction 5Ah. This register provides host systems with standardized, versioned descriptors for erase block sizes, timing parameters, and command sets - eliminating hardcoded assumptions in bootloaders and enabling plug-and-play compatibility across different flash vendors and densities.
W25Q16JWSNIM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Winbond Electronics Corporation
- Series:
- SpiFlash®
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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
- Clock Frequency:
- 133 MHz
- Write Cycle Time - Word, Page:
- 3ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
W25Q16JWSNIM FAQ
1.How can I place an order for W25Q16JWSNIM through Aetrix?
Please submit a Request for Quotation (RFQ) for W25Q16JWSNIM 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 W25Q16JWSNIM reliable?
The price and inventory of W25Q16JWSNIM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25Q16JWSNIM is usually 5 days.
3.What payment methods are accepted for W25Q16JWSNIM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25Q16JWSNIM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25Q16JWSNIM?
W25Q16JWSNIM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25Q16JWSNIM 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 W25Q16JWSNIM?
For technical support, including W25Q16JWSNIM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25Q16JWSNIM requirements.
6.How does Aetrix verify that W25Q16JWSNIM is sourced from the original manufacturer or authorized distributors?
All W25Q16JWSNIM 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 W25Q16JWSNIM meets industry standards.
7.What is the process for return or replacement of W25Q16JWSNIM?
All W25Q16JWSNIM units undergo pre-shipment inspection (PSI). If there is an issue with W25Q16JWSNIM, 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 W25Q16JWSNIM part is unused and in its original packaging.
Return procedure for W25Q16JWSNIM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25Q16JWSNIM Tags
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M24C02-WMN6TP
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