Manufacturer: Winbond Electronics

Key Specifications

• Package: SOIC-8 (208 mil)
• Core: 128Mbit (16M x 8)
• Memory: 128Mbit SPI NOR Flash
• Interface: SPI / Dual SPI / Quad SPI / QPI
• Voltage: 2.7V - 3.6V
• Temperature: -40°C to +85°C
• Clock Frequency: 133 MHz (max)
• Read Speed: 66 MB/s (Quad I/O)

The W25Q128JVSIQ is a high-capacity SPI NOR Flash memory device from Winbond Electronics, designed for applications requiring reliable non-volatile storage with fast read and write performance. With a density of 128Mbit (16M x 8), this device operates over a wide voltage range of 2.7V to 3.6V and is available in a compact SOIC-8 package, making it suitable for space-constrained designs.

Key Features

• 128Mbit SPI NOR Flash memory with page program (up to 256 bytes) and sector erase (4K sectors)
• Supports standard SPI, Dual SPI, Quad SPI, and QPI (Quad Peripheral Interface) for flexible bus configurations
• High-speed clock rate up to 133 MHz, enabling fast data transfer (up to 66 MB/s in Quad I/O mode)
• Wide operating voltage range: 2.7V to 3.6V
• Industrial temperature range: -40°C to +85°C
• Low power consumption with deep power-down mode for battery-powered applications
• Advanced security features including unique ID and OTP (One-Time Programmable) area
• Endurance: 100,000 program/erase cycles per sector (typical)
• Data retention: 20 years (typical)

Applications

• Embedded systems and firmware storage
• Internet of Things (IoT) devices
• Consumer electronics (smart TVs, set-top boxes)
• Industrial control and automation
• Networking equipment (routers, switches)
• Automotive electronics (infotainment, telematics)

Selection Notes

The W25Q128JVSIQ is part of Winbond's W25Q series, offering a balance of density, performance, and cost. When selecting this device, consider the required interface mode (SPI vs. Quad) and the maximum clock frequency supported by your host controller. For applications demanding higher reliability, verify the endurance and data retention specifications against your expected usage. The SOIC-8 package is widely used and easy to solder, but ensure your PCB layout accommodates the 208-mil body width. For detailed electrical characteristics and timing diagrams, refer to the official datasheet.