W25Q40BVSNIG - 4Mb Serial NOR Flash SPI/Quad-SPI | Winbond
부품 번호: W25Q40BVSNIG ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.72 | $0.72 |
| 10 | $0.62 | $6.20 |
| 100 | $0.52 | $52.00 |
| 500 | $0.45 | $225.00 |
| 1,000 | $0.39 | $390.00 |
| 5,000 | $0.34 | $1,700.00 |
W25Q40BVSNIG 개요
A NOR flash memory is a non-volatile storage technology that retains data without power and supports byte-level random access and execute-in-place (XIP) operation. Within the memory hierarchy, NOR flash sits between SRAM (volatile, fast, expensive) and NAND flash (non-volatile, large block, slower random access), offering fast read access and reliable long-term data retention. NOR flash is commonly used for code storage, firmware boot, configuration parameters, and data logging in embedded systems.
Key features include 100,000 erase/program cycles per sector endurance, 20-year data retention, low power consumption with 1 mA active read current at 50 MHz and 1 uA power-down current, and a uniform 4 KB sector erase granularity. The device supports JEDEC-standard 3-byte addressing with an option for 4-byte address mode, and offers hardware and software write protection via status register bits and a dedicated WP pin.
The W25Q40BVSNIG uses a standard SPI interface with optional Dual-SPI (DIO/DOUT) and Quad-SPI (QIO/QOUT) modes that multiply throughput up to 4x compared to standard SPI. The integrated 256-byte page buffer and 4 KB sector erase make it suitable for both code shadowing to RAM and direct parameter storage. Security features include a 64-bit unique ID, three 256-byte security registers for OTP storage, and individual block locking.
Typical applications include IoT device firmware storage, consumer electronics boot code, industrial sensor data logging, smart home devices, networking equipment configuration memory, and battery-powered portable electronics requiring small-footprint non-volatile storage. The 8-pin SOIC package allows easy hand-soldering and standard PCB reflow profiles.
When designing with this device, ensure the SPI master supports the maximum 104 MHz clock in single I/O mode and observe the timing parameters in the Winbond datasheet. Use of Quad SPI mode requires firmware to issue the correct enable command (0x38) before reading, and the WP and HOLD pins must be properly biased to avoid spurious mode entry.
This page synthesizes distributor pricing, drop-in alternatives (including the newer W25Q40EWSNIG revision), and practical design notes not consolidated in the manufacturer datasheet.
드롭인 대체품: W25Q40BVSNIG — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
W25Q40EWSNIG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
W25Q40CLSNIG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
W25Q40BWSNIG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
W25X40CLSNIG
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MX25L4006EM2I-12G
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MX25L4006EZNI-12G
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AT25F041B-SSHB-T
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
W25Q40BVSNIG 최대 정격 & 전기적 특성
| 메모리 유형 | NOR Flash (Serial) |
| Density | 4 Mbit (512 KB) |
| 메모리 구성 | 65,536 pages x 256 bytes (or 2,048 sectors x 4 KB) |
| Supply Voltage (VCC) | 2.7 V to 3.6 V |
| 인터페이스 | SPI / Dual SPI / Quad SPI |
| Max Clock Frequency | 104 MHz (single I/O), 50 MHz (Quad SPI read) |
| Sector Erase Size | 4 KB uniform (also 32 KB and 64 KB block erase) |
| Page Program Size | 1 to 256 bytes |
| Endurance | 100,000 erase/program cycles per sector |
| Data Retention | 20 years typical |
| Active Read Current | 1 mA typical at 50 MHz |
| Power-Down Current | 1 uA typical |
| 패키지 | 8-pin SOIC-150 (SNIG suffix) |
| 동작 온도 | -40C to +85C (industrial) |
| Unique ID | 64-bit factory-programmed |
| Security Registers | Three 256-byte OTP registers |
| Write Protection | Hardware WP pin + software status register lock |
| RoHS 상태 | Compliant |
W25Q40BVSNIG 핀 구성
| 핀 1 | CS# — Chip Select (active low) |
| 핀 2 | DO (SO, SIO1) — Serial Data Out / IO1 in Quad SPI mode |
| 핀 3 | WP# (SIO2) — Write Protect (active low) / IO2 in Quad SPI mode |
| 핀 4 | GND — Ground |
| 핀 5 | SI (SIO0) — Serial Data In / IO0 in Quad SPI mode |
| 핀 6 | SCK — Serial Clock |
| 핀 7 | HOLD# (SIO3) — Hold (active low) / IO3 in Quad SPI mode |
| 핀 8 | VCC — Power supply (2.7V to 3.6V) |
일반적인 애플리케이션
W25Q40BVSNIG 적합 용도: 6 애플리케이션s: IoT Device Firmware Storage, Consumer Electronics Boot Code, Industrial Sensor Data Logging, Smart Home Device Configuration Memory, Networking Equipment Configuration, Battery-Powered Portable Electronics.
IoT Device Firmware Storage
The W25Q40BVSNIG stores bootloader and application firmware for resource-constrained IoT nodes (ESP32, STM32, nRF52) where its 512 KB capacity fits typical OTA images and where 4 KB sector erase granularity matches page-aligned update schemes. The 104 MHz standard SPI read allows direct XIP (execute-in-place) boot from flash, eliminating external boot ROM in many designs. The 1 uA power-down current extends battery life in sleep-dominated IoT deployments such as smart sensors and wireless tags. The 8-pin SOIC footprint simplifies hand-soldering for prototypes while supporting standard 3000-piece reels for production.
추천
Consumer Electronics Boot Code
The W25Q40BVSNIG serves as the boot ROM for set-top boxes, smart speakers, wearables, and small appliances where its 512 KB capacity comfortably fits a Linux kernel or RTOS image plus calibration data. Quad SPI mode doubles throughput over standard SPI, enabling fast cold-boot times under 200 ms when paired with a capable host controller. Hardware WP pin support allows secure firmware lockdown at production, and the 20-year data retention ensures credentials persist across consumer product lifecycle. The wide 2.7-3.6V supply range accepts noisy USB-derived rails common in consumer designs.
추천
Industrial Sensor Data Logging
In industrial sensor hubs and PLC peripherals, the W25Q40BVSNIG buffers measurement samples between network transmissions, leveraging its 4 KB sector erase to implement circular log files without complex wear-leveling firmware. The 100,000 erase/program cycle endurance and 20-year retention suit slow-update logging (minutes-to-hours cadence) over multi-year deployments. Industrial -40C to +85C operating temperature guarantees reliability in unconditioned factory floors and outdoor sensor enclosures. The JEDEC-standard 3-byte addressing with 4-byte extension supports legacy and modern SPI controllers interchangeably.
추천
Smart Home Device Configuration Memory
The W25Q40BVSNIG stores Wi-Fi credentials, pairing keys, and user preferences in smart bulbs, thermostats, door locks, and home automation hubs where its small 8-pin SOIC footprint saves PCB area and its low 1 uA standby current preserves battery life on intermittently powered devices. The three 256-byte OTP security registers securely hold factory provisioning data and per-device keys. Quad SPI throughput allows fast first-boot configuration loads (<100 ms typical) for a smooth user-experience. Field firmware updates via OTA reuse sector erase granularity to preserve neighboring configuration blocks.
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Networking Equipment Configuration
The W25Q40BVSNIG stores bootloader and config files in routers, switches, and small gateways where its reliability under continuous operation and 100,000 erase/program endurance suits periodic configuration save cycles. Hardware write-protect pin enables secure lockdown of boot regions after manufacturing, preventing on-device firmware tampering. Quad SPI high-throughput allows fast boot of network operating systems from small embedded Linux distributions. Industrial temperature grade ensures operation in unventilated network cabinets where ambient temperatures can exceed 70C.
추천
Battery-Powered Portable Electronics
The W25Q40BVSNIG enables firmware and data storage in handheld medical devices, fitness wearables, and portable instruments where its 1 uA power-down current and 1 mA active read current minimize battery drain during operation and sleep. The 512 KB capacity fits compressed firmware plus several hours of logged biosignal data. Quad SPI read at 50 MHz enables responsive UI updates without perceptible latency. The compact 8-SOIC package suits thin form-factor designs where board area is at a premium, and the wide 2.7-3.6V supply accommodates single-cell Li-ion battery voltage directly.
추천
추천 제품 요약
엔지니어링 참조 데이터: W25Q40BVSNIG — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | W25Q40EWSNIG | W25Q40CLSNIG | W25Q40BWSNIG | MX25L4006EM2I-12G | AT25F041B-SSHB-T |
|---|---|---|---|---|---|---|
| Brand | Winbond | Winbond | Winbond | Winbond | Macronix | Renesas (Adesto) |
| Package | 8-SOIC (150 mil) | 8-SOIC (150 mil) - same | 8-SOIC (150 mil) - same | 8-SOIC (150 mil) - same | 8-SOIC (150 mil) - same | 8-SOIC (150 mil) - same |
| Density | 4 Mbit (512 KB) | 4 Mbit (512 KB) | 4 Mbit (512 KB) | 4 Mbit (512 KB) | 4 Mbit (512 KB) | 4 Mbit (512 KB) |
| Max Clock (Standard SPI) | 104 MHz | 104 MHz | 104 MHz | 104 MHz | 80 MHz | 85 MHz |
| Max Clock (Quad SPI) | 50 MHz | 104 MHz | 80 MHz | 50 MHz | 80 MHz | 85 MHz |
| Supply Voltage | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V |
| Sector Erase Size | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| Endurance (cycles/sector) | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 |
| Power-Down Current | 1 uA | 1 uA | 1 uA | 1 uA | 2 uA | 5 uA |
주요 차별점
- Quad SPI mode at 50 MHz with full JEDEC-standard command set (vs W25X40CLSNIG)
- Industry-standard 4 KB uniform sector erase with 100K endurance (vs AT25F041B-SSHB-T)
- Wide third-party ecosystem and long supply commitment (vs MX25L4006EM2I-12G)
설계 노트
Place a 100 nF decoupling capacitor as close as possible to the VCC pin (pin 8) of the W25Q40BVSNIG, with a short trace to GND (pin 4). Add a 10 uF bulk capacitor on the same supply rail if the flash is more than 25 mm from the host MCU regulator. Keep the CS# trace short to minimize ringing; long CS traces can cause spurious chip deselection during high-speed reads above 50 MHz.
For SPI clocks above 50 MHz, route SCK, CS#, DO, and SI as a matched-length group with characteristic impedance of 50 ohms. Place a 33 ohm series resistor near the host MCU SCK pin to dampen ringing. If using Quad SPI, ensure all four IO lines are matched within 5 mm to avoid setup/hold violations at 104 MHz. Avoid routing flash signals under switching regulator inductors or near high-current traces.
Do not issue a Read command (0x03) without first sending the chip-select-low and command byte sequence. Quad SPI mode must be explicitly enabled via command 0x38 before reading; otherwise the device remains in standard SPI mode. Always check the BUSY bit in status register 1 before initiating a new program or erase operation. The WP# pin must be pulled high through a 10 kohm resistor if unused to prevent accidental write protection.
During sector erase and page program operations, the W25Q40BVSNIG draws up to 25 mA peak from VCC. Ensure the host 3.3V regulator can supply this transient without voltage droop below 2.7V. In battery-powered designs, perform erase/program operations in bursts rather than continuously to manage average power consumption. The deep power-down current of 1 uA requires the CS# pin to be held high during sleep.
규정 준수 정보
RoHS compliant per Winbond product page. Not AEC-Q100 qualified; for automotive applications choose AEC-Q100 qualified variants or screen separately. Lead-free and halogen-free assembly per JEDEC J-STD-020.
