Core specifications
W25N02KVZEIR belongs to Winbond's QspiNAND memory series, which combines the simplicity of the SPI interface with the large-capacity advantages of NAND flash memory.This chip provides2Gbit (256M bytes) The storage capacity of256M×8-bit organizational structure, the storage array is divided into 131072 programmable pages, each page is 2048 bytes, and is equipped with a 128-byte spare area (Spare Area).Erase operations are performed in blocks of 64 pages, or 128KB per block.
In terms of interface, the chip supportsStandard SPI, dual SPI and quad SPI (QSPI) Three working modes.In four-wire mode, a clock frequency of 104MHz provides equivalent416MHz（104MHz x 4） Data transfer rates, sequential read speeds up to50MB/s。
The operating voltage range is2.7V to 3.6V, powered by a single power supply.Power consumption control is also excellent, with active current as low as25mA, the standby current is only10µA, it can even be reduced to1µA.The package adopts8-WSON（8mm×6mm）, compact size.Operating temperature coverage-40℃ to 85℃Industrial-grade wide temperature range, data retention capability for up to10 years。
Core advantages: SLC high reliability + SPI miniaturized interface synergistic value
The greatest value of W25N02KVZEIR in product design is concentrated inHigh reliability of SLC architecturewithMiniaturization advantages of SPI interfaceon the combination.SLC (single-layer cell) NAND flash memory only stores 1 bit of data per unit. Compared with MLC and TLC, its original bit error rate is lower and its erase and write life is longer. Its advantages are extremely prominent in industrial control, data collection and other scenarios that require frequent writing and long-term data storage.Winbond provides the chipUser-configurable internal 8-bit ECC error correction engine, further strengthening data integrity protection.
Unlike traditional parallel NAND flash memory, which often requires more than 20 pins, W25N02KVZEIR requires only 6 SPI pins to complete all communications. The number of pins is greatly reduced, which not only reduces BOM costs, but also simplifies PCB design and manufacturing yield.At the same time, the chip supportssequential read mode, allowing efficient access to the entire memory array through a single read command, further improving system startup and data loading efficiency.
The chip also providesJEDEC standard manufacturer and device ID、Unique ID page、Parameter pageandTen 2048-byte OTP pagesand other advanced features, and supports software and hardware write protection, power lock protection and other functions, providing full protection for product firmware security and device identity authentication.
Typical application scenarios
W25N02KVZEIR has a broad application landscape and is especially suitable for embedded scenarios that require large capacity, small size and industrial-grade reliability.
Industrial control and automation equipmentIt is one of its core application directions.In PLC data collection terminals, industrial gateways and human-machine interface devices, the chip can be used to store operating systems, Web pages, historical data and log files.The SLC architecture ensures data integrity and long-term stability in frequent write operation scenarios. The wide temperature operating range of -40°C to 85°C enables it to adapt to harsh environments such as outdoor base stations and industrial sites.
IoT Gateway and Edge ComputingThis chip is also widely used.Smart gateways and edge nodes need to reserve sufficient firmware and cache space to support OTA upgrades and multi-version firmware backup. The large capacity of 2Gbit and the XIP (execution in place) compatibility mode of the SPI interface can reduce system memory usage while providing ample code space.
Network communication equipmentIn terms of access network equipment such as routers, switches, and optical modems, the chip is used to store bootloader, radio frequency calibration parameters, and operating configuration data.Vehicle infotainment and aftermarket equipmentThe wide operating temperature range of -40℃ to 85℃ meets the environmental requirements of vehicle electronics and can be used to store startup logos, navigation offline maps and sound files.Consumer Electronics and Portable DevicesIt is also commonly used as a high-density non-volatile storage medium in smart watches, smart home devices and other fields.
Comparison of models in the same series
W25N02KVZEIR belongs to Winbond W25N-KV series. The same series provides a wealth of capacity, packaging and temperature grade branches for project selection.
The capacity of the same series is backward compatible: If there is a lot of redundancy in 2Gbit capacity, you can choose it.W25N01KVZEIR(1Gbit capacity), using the same WSON-8 package and SPI interface, which can optimize BOM costs while meeting system requirements.Capacity expansion of the same series: If you need more storage space, you can selectW25N04KVZEIR(4Gbit), the packaging and interface are consistent.
Different package selections in the same series: In addition to WSON-8 packaging, this series also offers24-ball TFBGA（8mm×6mm） And16-pin SOIC（300-mil） A variety of packaging options, which can be flexibly selected according to the PCB area and production process.
Voltage version distinction: Winbond also provides a 1.8V voltage version (W25N02KW series) for this series. When selecting, you need to carefully check according to the system I/O level to avoid voltage incompatibility.This series has beenMarch 2021It has been included in Winbond’s long-term supply guarantee plan.
Cross-brand functional replacement: Under supply constraints or cost optimization needs, GigaDevice’sGD5F2GM7UEYIGRThe other models are basically equivalent in terms of electrical specifications, packaging and functions, and functional replacement can be achieved.
write at the end
With 2Gbit large capacity, 104MHz four-wire SPI interface, SLC high-reliability architecture, on-chip 8-bit ECC error correction engine, -40°C to 85°C industrial-grade wide temperature range and 8-WSON ultra-small package, Winbond W25N02KVZEIR provides a cost-effective storage solution in embedded scenarios such as industrial control, IoT gateways, network communications, and automotive electronics.The simplicity of its SPI interface and the large-capacity advantage of NAND flash memory allow engineers to achieve unified storage of firmware and data in a limited space.
As a chip agent distributor that has been deeply involved in the electronic components industry since 2011, Shenzhen Hongmai Electronics Co., Ltd. has long-term stock of all models of Winbond W25N02KVZEIR and W25N-KV series SPINAND original products are in stock, and are also supplied with different capacity branches such as W25N01KVZEIR, W25N04KVZEIR and cross-brand compatible replacement models such as GD5F2GM7UEYIGR. We support factory batch direct shipment, small batch samples and technical selection assistance.If you need to inquire about prices or need to know the selection suggestions of different capacities and packages of the same series, please feel free to contact us (tel: 0755-23815611, QQ 2355878270).Shenzhen Hongmai Electronics Co., Ltd.
