Winbond Electronics Corporation W25Q128JVCIM

Overview

W25Q128JVCIM from Winbond is a 128M-bit (16MB) serial NOR flash memory IC supporting Standard/Dual/Quad SPI, QPI, and DTR read modes. It operates from 2.7V to 3.6V, delivers up to 133MHz SPI clock rate (532MHz equivalent Quad I/O), features uniform 4KB sectors, 100K program-erase cycles, and supports execute-in-place (XIP) for code storage in microcontroller boot applications.

For engineers reviewing the W25Q128JVCIM datasheet, W25Q128JVCIM pinout, W25Q128JVCIM application, or W25Q128JVCIM equivalent, key selection criteria include its industrial-grade temperature range (–40°C to +85°C), hardware write protection via /WP and /HOLD pins, quad-enable (QE) bit configuration, 64-bit unique ID, and support for continuous read with wrap for efficient firmware loading.

Technical Context

The W25Q128JVCIM implements a flexible SPI-compatible interface with configurable I/O modes: Standard (4-pin), Dual (6-pin), Quad (6-pin), and QPI (6-pin). Its command set includes DTR Fast Read (0Dh/BDh/EDh) enabling double-data-rate transfers on CLK edges, and supports both volatile and non-volatile status register bits for sector/block protection, security register locking, and output driver strength control.

Internally, the device organizes memory into 65,536 pages of 256 bytes each, grouped into 4,096 erasable 4KB sectors and 256 erasable 64KB blocks. Erase/program suspend/resume functionality enables concurrent background operations, while SFDP (Serial Flash Discoverable Parameters) register provides standardized access to device capabilities and timing parameters.

Key Specifications

Pinout & Package

W25Q128JVCIM is supplied in an 8-pin SOIC 208-mil package (Package Code S), with pin 1 = /CS, pin 2 = DO (IO1), pin 3 = /WP (IO2), pin 4 = GND, pin 5 = DI (IO0), pin 6 = CLK, pin 7 = /HOLD or /RESET (IO3), pin 8 = VCC. The /HOLD and /RESET functions share pin 7 and are selected via Status Register configuration; /WP and /HOLD are disabled in Quad SPI mode when QE=1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial NOR flash memory applications.

Compared with MX25L12833FZC-10G, W25Q128JVCIM delivers 4× higher effective bandwidth via DTR/QPI and supports seamless XIP; versus S25FL128SAGMFI000, it trades built-in ECC and +105°C rating for lower cost and identical industrial-grade thermal performance.

Availability

W25Q128JVCIM is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and network edge routers requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for W25Q128JVCIM 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 NOR/NAND flash, SRAM, and mobile DRAM.

The W25Q series targets high-performance embedded systems needing reliable, feature-rich serial flash for code storage, firmware updates, and secure parameter retention.

FAQ

What is the operating voltage range for W25Q128JVCIM?

W25Q128JVCIM operates from 2.7 V to 3.6 V. This single-supply range ensures compatibility with standard 3.3 V logic families without requiring external level shifters. The device maintains full functionality-including all instruction sets, DTR modes, and status register access-across this entire voltage window, and its power-down current remains below 1 µA at 3.3 V.

Does W25Q128JVCIM support execute-in-place (XIP) operation?

Yes, W25Q128JVCIM supports true XIP via its Continuous Read Mode with wrap and Quad SPI/QPI interfaces. When configured for Quad I/O with QE=1, it achieves up to 532 MHz equivalent bandwidth, enabling low-latency instruction fetch directly from flash. The ≤8-clock address overhead and uniform 4KB sector architecture minimize cache misses and improve deterministic execution timing for real-time applications.

How is hardware write protection implemented on W25Q128JVCIM?

W25Q128JVCIM implements hardware write protection through dedicated /WP and /HOLD pins, plus non-volatile status register bits (BP2–BP0, TB, SEC, CMP, SRP). When /WP is held low, status register writes are blocked regardless of software state. Sector- or block-level protection can be permanently locked via OTP bits in security registers, and the /WP pin remains functional in Standard/Dual SPI modes-but is repurposed as IO2 when Quad SPI is enabled (QE=1).

What package type does W25Q128JVCIM use, and what are its key mechanical dimensions?

W25Q128JVCIM uses an 8-pin SOIC 208-mil package (Package Code S), measuring 5.3 mm × 5.3 mm × 1.95 mm. Its lead pitch is 1.27 mm, and it complies with JEDEC MS-012 standards. This compact, surface-mount package supports reflow soldering and is widely supported in industrial PCB assembly lines, offering proven reliability and thermal performance for long-life embedded deployments.

Can W25Q128JVCIM be used in automotive applications?

W25Q128JVCIM is rated for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While it may function in some under-hood or infotainment applications, Winbond offers the W25Q128JW variant (AEC-Q100 Grade 3) for automotive use. For safety-critical automotive systems, W25Q128JVCIM should only be deployed after full qualification per ISO 26262 ASIL requirements and with appropriate system-level redundancy and monitoring.