My Inquiry
My Account
Winbond Electronics Corporation W25X40BVSNIG
- Part No.:
- W25X40BVSNIG
- Manufacturer:
- Winbond Electronics Corporation
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
W25X40BVSNIG.pdf
- Description:
- IC FLASH 4MBIT SPI 104MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,409
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
W25X40BVSNIG from Winbond is a 4M-bit (512KB) serial flash memory IC designed for embedded code storage and data logging in space-constrained SPI-based systems. It features uniform 4KB sectors, dual I/O SPI interface, 104MHz clock support, and operates from a single 2.7V–3.6V supply with 4mA active and 1µA power-down current. Used in firmware boot loaders, IoT sensor nodes, and industrial HMI panels.
For engineers reviewing the W25X40BVSNIG datasheet, W25X40BVSNIG pinout, W25X40BVSNIG application, or W25X40BVSNIG equivalent, key selection criteria include sector granularity (4KB), dual I/O read throughput (208 Mbps), hardware write protection via /WP pin, and SOIC-150-mil package compatibility with legacy PCB footprints.
Technical Context
The W25X40BVSNIG implements a standard SPI Mode 0/3 interface with dedicated /CS, CLK, /WP, /HOLD, and bidirectional IO0/IO1 pins. Its internal architecture includes a 256-byte page buffer, status register with BP2–BP0 and TB bits for configurable top/bottom memory protection, and high-voltage generators for erase/program operations.
It supports three instruction modes: standard single-I/O (DI/DO), fast read dual output (3Bh), and fast read dual I/O (BBh). Erase granularity spans 4KB sectors, 32KB blocks, 64KB blocks, and full chip - enabling fine-grained firmware partitioning and parameter storage without over-erasure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 M-bit (512 KB), organized as 2,048 × 256-byte programmable pages |
| Sector Size | 128 uniform 4KB sectors - enables precise firmware update zones and NV parameter storage |
| SPI Clock Max | 104 MHz - delivers up to 208 Mbps effective throughput using Fast Read Dual I/O (BBh) |
| Supply Voltage | 2.7 V to 3.6 V - compatible with 3.3V logic domains and low-power microcontrollers |
| Active Current | 4 mA typical - minimizes system power budget during firmware reads or updates |
| Power-down Current | 1 µA typical - extends battery life in always-on edge devices between wake cycles |
| Erase/Write Endurance | 100,000 cycles minimum - supports field firmware upgrades over product lifetime |
| Data Retention | 20 years at +25°C - ensures long-term reliability for configuration and calibration data |
Pinout & Package
W25X40BVSNIG is packaged in an 8-pin SOIC 150-mil (package code SN), with gull-wing leads and 1.27 mm pitch. The package is RoHS-compliant, surface-mountable, and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 /CS | Chip Select Input | Active-low enable; must transition high→low before instruction acceptance; controls device power state |
| 2 DO (IO1) | Serial Data Output / Bidirectional I/O | Outputs data in standard SPI mode; functions as IO1 in dual I/O mode for parallel bit transfer |
| 3 /WP | Hardware Write Protect Input | Active-low pin that locks status register writes when SRP=1; enables board-level protection of critical firmware regions |
| 4 GND | Ground Reference | Primary return path for VCC and all I/O signals; requires low-impedance PCB connection |
| 5 DIO (IO0) | Serial Data Input / Bidirectional I/O | Accepts instructions/addresses in standard mode; functions as IO0 in dual I/O mode |
| 6 CLK | Serial Clock Input | Edge-triggered timing source; supports Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) |
| 7 /HOLD | Hold Control Input | Pauses ongoing SPI transaction without deselecting device; essential for multi-peripheral bus sharing |
| 8 VCC | Power Supply | Single 2.7–3.6V supply; decoupling capacitor (0.1 µF) required near pin for stable operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual I/O SPI Interface | Enables 208 Mbps read throughput via BBh instruction - eliminates need for parallel flash in cost-sensitive designs |
| Uniform 4KB Sector Architecture | Allows independent erasure of firmware partitions or configuration banks without disturbing adjacent data |
| Configurable Hardware Write Protection | /WP pin + status register BP/TB bits permit selective locking of top or bottom memory regions at boot time |
| Continuous Read Mode | Reduces instruction overhead to ≤8 clocks per address; supports true execute-in-place (XIP) for non-critical code |
| JEDEC Standard Identification | Supports ABh, 90h, 92h, and 9Fh commands for automated BOM validation and factory programming |
| Low-Power Power-down State | 1 µA standby current enables integration into energy-harvesting and battery-powered edge sensors |
Applications
| Firmware Boot Loader Storage | Industrial Sensor Data Logging |
|---|---|
|
Use Scenario: Storing bootloader and application firmware images for ARM Cortex-M microcontrollers in factory-programmed modules. IC Role / Device Role / Timing Role: Non-volatile code storage with XIP-capable continuous read mode and fast dual-I/O loading during cold start. Use Value: Reduces boot time by 40% vs. standard SPI flash via BBh instruction; 4KB sectors allow atomic firmware patching without full chip erase. |
Use Scenario: Capturing timestamped temperature, pressure, and humidity readings in unattended remote monitoring stations. IC Role / Device Role / Timing Role: Parameter and event log storage with wear-leveling enabled by 100K-cycle endurance and sector-erase granularity. Use Value: Enables 10+ years of daily logging at 100 samples/day using only 128 sectors; power-down mode extends AA battery life to >5 years. |
| Smart Home HMI Configuration | Medical Device Calibration Storage |
|
Use Scenario: Holding UI theme assets, language strings, and user preferences in touch-enabled home automation panels. IC Role / Device Role / Timing Role: Read-intensive data repository accessed via SPI DMA; leverages fast read dual output for UI asset streaming. Use Value: Delivers <50 ms UI asset load latency; hardware /WP protection prevents accidental overwrite during OTA updates. |
Use Scenario: Storing factory-calibrated sensor offsets, gain coefficients, and regulatory audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant non-volatile memory with top/bottom block protection isolating calibration data from application code. Use Value: TB/BP bits lock lower 64KB (0x000000–0x00FFFF) for calibration constants while allowing upper sectors for firmware revision history. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF041A-SSHN-B | 4 M-bit, SOIC-8, 85 MHz max clock, no dual I/O support - single-line SPI only | Lacks dual I/O acceleration; slower read throughput (≤170 Mbps) limits XIP viability | Choose for cost-sensitive, low-bandwidth applications where firmware size permits full-sector updates |
| MX25L4005AM1I-12G | 4 M-bit, SOIC-8, 75 MHz max clock, supports dual output but not dual I/O mode | Missing BBh instruction; cannot achieve 208 Mbps - limits real-time code shadowing performance | Prefer when existing design uses MXIC toolchains and dual-output suffices for boot latency targets |
Compared with AT25DF041A-SSHN-B and MX25L4005AM1I-12G, W25X40BVSNIG delivers superior read bandwidth and finer 4KB erase control, making it optimal for field-upgradable embedded systems requiring both speed and data integrity.
Availability
W25X40BVSNIG is available at Aetrix Electronics and suitable for industrial HMI panels, medical sensor modules, and smart meter firmware storage requiring stable component supply across multi-year production cycles.
Supply support for W25X40BVSNIG 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 code storage ICs for embedded and automotive markets.
The W25X series was designed specifically for cost-optimized, low-power embedded systems needing reliable code execution and flexible data storage - balancing density, speed, and pin efficiency in SPI interfaces.
FAQ
What is the maximum SPI clock frequency supported by W25X40BVSNIG?
W25X40BVSNIG supports up to 104 MHz SPI clock frequency in standard and dual I/O modes. When using the Fast Read Dual I/O (BBh) instruction, this yields an effective data rate of 208 Mbps. This specification is validated across the full operating temperature range (−40°C to +85°C) and voltage range (2.7V–3.6V), and is documented in Section 10.6 of the official datasheet.
Does W25X40BVSNIG support execute-in-place (XIP) operation?
Yes, W25X40BVSNIG supports true XIP via its Continuous Read Mode, which reduces instruction overhead to as few as 8 clocks per address and enables sequential access without repeated command issuance. This capability is confirmed in Section 2 (Features) and Section 8.1.2 of the datasheet, and is functionally distinct from simple fast-read modes due to its auto-increment addressing behavior.
How many 4KB sectors does W25X40BVSNIG contain?
W25X40BVSNIG contains exactly 128 uniform 4KB sectors, totaling 512 KB of addressable memory space (0x000000–0x07FFFF). This sector count is explicitly stated in Section 1 (General Description) and verified in the Block Diagram (Figure 2) and Status Register Memory Protection table for the 4M-bit variant.
Can W25X40BVSNIG be hardware write-protected using the /WP pin alone?
No - the /WP pin alone does not provide full hardware write protection. It only disables status register writes when the Status Register Protect (SRP) bit is set to 1. To protect memory contents, /WP must be used in conjunction with BP2–BP0 and TB bits configured via Write Status Register (01h). This two-layer mechanism is detailed in Sections 6.4, 8.2.1, and 9.1.6 of the datasheet.
What package type does W25X40BVSNIG use, and is it lead-free?
W25X40BVSNIG uses an 8-pin SOIC 150-mil package (package code SN), with gull-wing leads and 1.27 mm pitch. It is RoHS-compliant and lead-free, as confirmed in Section 11.1 (Package Specification) and the ordering information table (Section 12.1) of the datasheet. The "G" suffix in SNIG denotes green/lead-free construction.
W25X40BVSNIG 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:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 104 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
W25X40BVSNIG FAQ
1.How can I place an order for W25X40BVSNIG through Aetrix?
Please submit a Request for Quotation (RFQ) for W25X40BVSNIG 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 W25X40BVSNIG reliable?
The price and inventory of W25X40BVSNIG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for W25X40BVSNIG is usually 5 days.
3.What payment methods are accepted for W25X40BVSNIG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for W25X40BVSNIG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for W25X40BVSNIG?
W25X40BVSNIG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your W25X40BVSNIG 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 W25X40BVSNIG?
For technical support, including W25X40BVSNIG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your W25X40BVSNIG requirements.
6.How does Aetrix verify that W25X40BVSNIG is sourced from the original manufacturer or authorized distributors?
All W25X40BVSNIG 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 W25X40BVSNIG meets industry standards.
7.What is the process for return or replacement of W25X40BVSNIG?
All W25X40BVSNIG units undergo pre-shipment inspection (PSI). If there is an issue with W25X40BVSNIG, 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 W25X40BVSNIG part is unused and in its original packaging.
Return procedure for W25X40BVSNIG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
W25X40BVSNIG 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…
