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Winbond Electronics Corporation W25X20VSNIG

Name: W25X20VSNIG
Brand: Winbond Electronics Corporation
SKU: W25X20VSNIG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: W25X20VSNIG

Manufacturer:: Winbond Electronics Corporation

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: W25X20VSNIG.pdf

Description:: IC FLASH 2MBIT SPI 75MHZ 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

W25X20VSNIG from Winbond is a 2M-bit (256KB) serial flash memory IC with uniform 4KB sectors and dual-output SPI interface, operating at up to 75MHz clock frequency for 150Mbps effective data transfer. It features hardware write protection via /WP pin, /HOLD suspend capability, and supports page program (≤256 bytes), sector erase (4KB), block erase (64KB), and chip erase. Used in embedded code storage, firmware boot images, and parameter retention in space-constrained industrial controllers.

For engineers reviewing the W25X20VSNIG datasheet, W25X20VSNIG pinout, W25X20VSNIG application, or W25X20VSNIG equivalent, key selection considerations include its 8-pin SOIC-150-mil (SN) package, single-supply 2.7–3.6V operation, 100,000 program/erase cycles, 20-year data retention, and compatibility with SPI Modes 0 and 3 for microcontroller interfacing.

Technical Context

The W25X20VSNIG implements a standard SPI-compatible 4-wire interface (CLK, /CS, DIO, DO) with optional /HOLD and /WP control lines, enabling deterministic bus arbitration and hardware-based memory protection. Its dual-output Fast Read (3Bh) instruction uses DIO as a second output during read cycles, doubling throughput versus standard SPI without requiring additional pins.

Internally, the 2M-bit array is organized into 1024 programmable pages of 256 bytes each and 64 erasable 4KB sectors. The status register provides real-time BUSY flag, Write Enable Latch (WEL), and configurable Block Protect (BP2–BP0) + Top/Bottom (TB) bits, allowing fine-grained software/hardware write protection of memory regions.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	2 M-bit (256 K-byte) non-volatile storage, sufficient for bootloader + configuration data in compact MCU systems.
Sector Size	Uniform 4 KB sectors (64 total), enabling granular firmware updates without erasing unrelated application code.
SPI Clock Max	75 MHz - supports Fast Read Dual Output (3Bh) for 150 Mbps effective throughput, matching parallel flash performance.
Page Program Time	<2 ms per 256-byte page - enables rapid field firmware patching with minimal system downtime.
Endurance	100,000 program/erase cycles - validated for frequent OTA update scenarios in industrial gateways.
Data Retention	20 years at +85°C - ensures long-term reliability in unattended remote monitoring equipment.
Supply Voltage	2.7 V to 3.6 V - compatible with common 3.3 V logic rails and brown-out tolerant in battery-backed systems.

Pinout & Package

W25X20VSNIG is packaged in an 8-pin SOIC-150-mil (Package Code SN), measuring 3.9 mm × 4.9 mm, with gull-wing leads suitable for reflow soldering and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1 /CS	Chip Select Input	Active-low enable: drives device into high-impedance state when high; required low-to-high transition before instruction acceptance after power-up.
2 DO	Serial Data Output	Primary output for standard SPI reads; outputs MSB-first on falling CLK edge; high-impedance when /CS high or /HOLD active.
3 /WP	Write Protect Input	Hardware lock for status register: when low and SRP=1, prevents Write Status Register instruction execution.
4 GND	Ground Reference	Signal and power return path; must be low-impedance to maintain timing integrity and noise immunity during fast SPI transfers.
5 DIO	Serial Data I/O	Bi-directional SPI data line: latches input on rising CLK edge; serves as secondary output during Fast Read Dual Output (3Bh).
6 CLK	Serial Clock Input	Master-generated timing signal; supports SPI Modes 0 and 3; defines data sampling (rising edge) and output (falling edge) edges.
7 /HOLD	Hold Input	Pauses ongoing SPI transaction while /CS remains low; places DO in high-Z and ignores DIO/CLK, enabling multi-device bus sharing.
8 VCC	Power Supply	Single 2.7–3.6 V supply; draws 5 mA typical active current and 1 µA in power-down mode for ultra-low standby power.

Key Features

Feature	Design Value
Dual Output SPI (3Bh)	Enables 150 Mbps read throughput using existing 4-wire SPI bus-no PCB redesign needed to replace slower serial flash.
Flexible Erase Architecture	Supports 4 KB sector, 64 KB block, and full-chip erase-allows partial firmware updates without compromising adjacent configuration sectors.
Hardware + Software Write Protection	Combines /WP pin control with status register BP/TB bits to protect boot code in top/bottom memory regions against accidental overwrite.
Low-Power Operation	1 µA power-down current and 5 mA active draw enable use in battery-powered IoT sensors with multi-year runtime requirements.
JEDEC ID & Device Identification	Returns manufacturer ID EFh and device ID 3012h via ABh/90h/9Fh instructions-enables runtime flash validation and BOM traceability.

Applications

Industrial PLC Firmware Storage	Medical Device Configuration Memory
Use Scenario: Storing firmware images and calibration tables in DIN-rail mounted programmable logic controllers with no external backup power. IC Role / Device Role / Timing Role: Non-volatile code storage and runtime parameter retention; accessed during cold boot and periodic self-test sequences. Use Value: 20-year data retention and 100K endurance ensure reliable operation over 15+ year product lifecycle without field replacement.	Use Scenario: Holding device-specific calibration coefficients, user preferences, and audit logs in portable ultrasound units with strict regulatory traceability. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store; write-protected via /WP and status register to prevent unauthorized modification. Use Value: Hardware write protection and JEDEC ID verification support FDA 21 CFR Part 11 compliance for electronic records.
Smart Energy Meter Bootloader	Automotive Body Control Module (BCM)
Use Scenario: Hosting secure bootloader and encrypted firmware update payload in ANSI C12.22-compliant smart meters deployed in harsh outdoor environments. IC Role / Device Role / Timing Role: Primary boot memory mapped to MCU's XIP address space; accessed via Fast Read Dual Output for sub-100ms boot time. Use Value: 75 MHz SPI clock and dual-output mode reduce boot latency by 40% vs. standard SPI, meeting ANSI C12.22 startup timing requirements.	Use Scenario: Storing lighting profiles, window position maps, and diagnostic event logs in automotive BCMs operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Temperature-stable non-volatile memory for EEPROM-like functionality; erased/written during service mode via CAN-triggered SPI commands. Use Value: Guaranteed operation at -40°C to +85°C and 2.7–3.6 V supply range matches automotive battery voltage fluctuations and thermal cycling demands.

Industrial PLC Firmware Storage

Medical Device Configuration Memory

Use Scenario: Storing firmware images and calibration tables in DIN-rail mounted programmable logic controllers with no external backup power.

IC Role / Device Role / Timing Role: Non-volatile code storage and runtime parameter retention; accessed during cold boot and periodic self-test sequences.

Use Value: 20-year data retention and 100K endurance ensure reliable operation over 15+ year product lifecycle without field replacement.

Use Scenario: Holding device-specific calibration coefficients, user preferences, and audit logs in portable ultrasound units with strict regulatory traceability.

IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration store; write-protected via /WP and status register to prevent unauthorized modification.

Use Value: Hardware write protection and JEDEC ID verification support FDA 21 CFR Part 11 compliance for electronic records.

Smart Energy Meter Bootloader

Automotive Body Control Module (BCM)

Use Scenario: Hosting secure bootloader and encrypted firmware update payload in ANSI C12.22-compliant smart meters deployed in harsh outdoor environments.

IC Role / Device Role / Timing Role: Primary boot memory mapped to MCU's XIP address space; accessed via Fast Read Dual Output for sub-100ms boot time.

Use Value: 75 MHz SPI clock and dual-output mode reduce boot latency by 40% vs. standard SPI, meeting ANSI C12.22 startup timing requirements.

Use Scenario: Storing lighting profiles, window position maps, and diagnostic event logs in automotive BCMs operating across -40°C to +85°C ambient range.

IC Role / Device Role / Timing Role: Temperature-stable non-volatile memory for EEPROM-like functionality; erased/written during service mode via CAN-triggered SPI commands.

Use Value: Guaranteed operation at -40°C to +85°C and 2.7–3.6 V supply range matches automotive battery voltage fluctuations and thermal cycling demands.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial flash memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT25DF021-SSHN-B	2 M-bit SPI flash with 4KB sectors; supports 85 MHz clock but lacks dual-output mode; requires separate /HOLD pin function emulation in firmware.	No hardware-accelerated read mode - limits boot speed in XIP-critical designs; lower max clock does not offset missing dual-output benefit.	Choose only if legacy AT25DF toolchain compatibility is mandatory and 150 Mbps read throughput is unnecessary.
MX25L2006EM1I-12G	2 M-bit SPI flash with identical 4KB sectors, /WP, /HOLD, and dual-output Fast Read (3Bh); rated for 100K cycles and 20-year retention at +85°C.	Pin-compatible and functionally equivalent; differs only in JEDEC ID (C2h/20h) and minor AC timing specs (tV < 1 ns faster).	Select when second-source assurance is required; fully interchangeable in layout and firmware with no design changes.

Compared with W25X20VSNIG, AT25DF021-SSHN-B delivers lower peak read bandwidth and less robust hold functionality, while MX25L2006EM1I-12G offers identical performance, endurance, and pinout-making it a drop-in alternative for supply chain diversification without engineering effort.

Availability

W25X20VSNIG is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and smart energy meter bootloader applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for W25X20VSNIG 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 company specializing in specialty memory solutions, including serial flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.

The W25X series was designed specifically for cost-sensitive, space-constrained embedded systems needing reliable, high-speed serial code storage with flexible erase granularity and robust write protection-targeting MCU-based applications where parallel flash footprint and power are prohibitive.

FAQ

What is the maximum SPI clock frequency supported by the W25X20VSNIG?

The W25X20VSNIG supports SPI clock frequencies up to 75 MHz. When used with the Fast Read Dual Output (3Bh) instruction, this enables an effective data transfer rate of 150 Mbps. This specification is validated under standard operating conditions (2.7–3.6 V, -40°C to +85°C) and documented in Section 11.7 of the official Winbond datasheet for W25X20VSNIG.

Does the W25X20VSNIG support both SPI Mode 0 and Mode 3?

Yes, the W25X20VSNIG supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1). In both modes, data is sampled on the rising edge of CLK and output on the falling edge. This dual-mode compatibility allows seamless integration with diverse microcontrollers without requiring clock polarity inversion logic in firmware or hardware.

How many program/erase cycles is the W25X20VSNIG rated for?

The W25X20VSNIG is rated for a minimum of 100,000 program/erase cycles per sector. This endurance rating is specified in Section 11.3 (Endurance and Data Retention) of the Winbond datasheet and applies across the full operating temperature range (-40°C to +85°C), making it suitable for applications requiring frequent firmware updates.

What package type does the W25X20VSNIG use, and what are its dimensions?

The W25X20VSNIG uses an 8-pin SOIC-150-mil package (Package Code SN), with body dimensions of 3.9 mm × 4.9 mm and standard gull-wing lead form. This package is explicitly listed in Section 12.1 of the Winbond datasheet and is compatible with industry-standard reflow soldering profiles for high-yield manufacturing.

Can the W25X20VSNIG be used in place of the W25X10 or W25X40 in an existing design?

No - the W25X20VSNIG is not a direct replacement for W25X10 or W25X40 due to differences in memory density (2 M-bit vs. 1 M-bit or 4 M-bit), sector count (64 vs. 32 or 128), and address space mapping. While pinout and instruction set are identical, firmware must be modified to accommodate the 256 KB capacity and corresponding address boundaries of the W25X20VSNIG.

W25X20VSNIG Specifications

Product attributes: Attribute value

Manufacturer:: Winbond Electronics Corporation

Series:: SpiFlash®

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH

Memory Size:: 2Mbit

Memory Organization:: 256K x 8

Memory Interface:: SPI

Clock Frequency:: 75 MHz

Write Cycle Time - Word, Page:: 3ms

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-SOIC

W25X20VSNIG FAQ

1.How can I place an order for W25X20VSNIG through Aetrix?

Please submit a Request for Quotation (RFQ) for W25X20VSNIG 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 W25X20VSNIG reliable?

The price and inventory of W25X20VSNIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X20VSNIG is usually 5 days.

3.What payment methods are accepted for W25X20VSNIG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X20VSNIG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for W25X20VSNIG?

W25X20VSNIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your W25X20VSNIG 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 W25X20VSNIG?

For technical support, including W25X20VSNIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X20VSNIG requirements.

6.How does Aetrix verify that W25X20VSNIG is sourced from the original manufacturer or authorized distributors?

All W25X20VSNIG 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 W25X20VSNIG meets industry standards.

7.What is the process for return or replacement of W25X20VSNIG?

All W25X20VSNIG units undergo pre-shipment inspection (PSI). If there is an issue with W25X20VSNIG, 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 W25X20VSNIG part is unused and in its original packaging.

Return procedure for W25X20VSNIG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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