The W25Q128JV from Winbond is a 128M-bit (16M-byte) 3V serial NOR Flash memory with standard, dual, and quad SPI interfaces operating up to 133MHz. Designed for high-density code storage in industrial and embedded systems, it offers fast read throughput, flexible erase architecture, and reliable in-system programmability.
Product Overview
The W25Q128JV belongs to Winbond’s extensively used SpiFlash family, providing a cost-effective, low-pin-count non-volatile storage solution. With density of 128M bits organized as 65,536 programmable pages of 256 bytes, it is well suited for firmware, boot code, configuration data, and parameter storage in microcontrollers and SoC-based designs.
Its quad SPI (QPI) mode and dual data-rate (DTR) support deliver significantly higher read bandwidth compared with traditional SPI Flash, helping reduce boot times in performance-sensitive applications. The device supports a standard 8-pin footprint, simplifying drop-in replacement and second-source qualification.
Key Features
- – 128M-bit / 16M-byte serial NOR Flash density
- – Standard SPI, Dual SPI, and Quad SPI (QPI) with DTR support
- – Supply voltage: 2.7V – 3.6V
- – High-speed clock: up to 133MHz in Quad SPI mode
- – Flexible erase: 4KB sectors, 32KB / 64KB blocks
- – 100,000 program/erase cycles per sector, 20-year data retention
- – Hardware and software write protection
- – Low power consumption with efficient suspend/resume
Technical Specifications
| Parameter | Specification |
|---|---|
| Density | 128 Mbit (16 Mbyte) |
| Interface | SPI / Dual SPI / Quad SPI (QPI), DTR |
| Supply Voltage | 2.7V – 3.6V |
| Max Clock Frequency | 133 MHz (Quad SPI) |
| Page Size | 256 bytes |
| Sector / Block | 4KB sector, 32KB / 64KB block |
| Endurance | 100,000 program/erase cycles (typical) |
| Data Retention | 20 years (typical) |
| Package | SOIC-8 208-mil / WSON-8 (verify ordering code with manufacturer datasheet) |
| Operating Temperature | -40°C to +85°C (standard grade) |
| Compliance | RoHS / REACH (verify with manufacturer datasheet) |
Applications
– Microcontroller firmware and boot code storage
– Industrial control and automation equipment
– Embedded systems and IoT edge nodes
– Consumer and portable electronics
– Networking and communication modules
Why Choose Newfly Electronics
– Verified sourcing from ISO9001-certified manufacturers and authorized channels
– MOQ flexibility with small-quantity and prototype sourcing support
– Alternative-part and cross-reference service for hard-to-find NOR Flash
– Full-board BOM sourcing to consolidate your component purchasing
– RoHS / REACH documentation support for compliance filing
FAQ
Q: Is the W25Q128JV a drop-in replacement for other 128M-bit SPI NOR Flash?
A: It shares the common 8-pin SPI Flash footprint and command set, but pinout, voltage, and timing should be confirmed against your existing part before substitution.
Q: What package options are available?
A: Common packages include SOIC-8 (208-mil) and WSON-8. Confirm the exact ordering code and package with the manufacturer datasheet for your production requirement.
Q: Can Newfly supply small quantities for prototyping?
A: Yes. We support both prototype volumes and production runs with MOQ flexibility and alternative-source options.
