Winbond Electronics Corporation W25Q128JVSJQ TR

Overview

W25Q128JVSJQ TR from Winbond is a 128M-bit (16MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with 133MHz clock rate, 4KB uniform sector architecture, and industrial temperature range (–40°C to +85°C). It delivers 66MB/s continuous read throughput and supports execute-in-place (XIP) for code storage in microcontroller boot applications.

For engineers reviewing the W25Q128JVSJQ TR datasheet, W25Q128JVSJQ TR pinout, W25Q128JVSJQ TR application, or W25Q128JVSJQ TR equivalent, key selection considerations include Quad SPI enable (QE bit), /HOLD vs /RESET pin availability in SOIC-8, 4KB sector granularity for firmware partitioning, and hardware write protection via /WP pin.

Technical Context

The W25Q128JVSJQ TR implements a flexible SPI command set including Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3) modes - with Quad operation enabled only when Status Register-2 QE bit = 1. Its internal architecture features a 256-byte page buffer, 4,096 erasable 4KB sectors, and three 256-byte security registers with OTP locks.

It supports erase/program suspend/resume, continuous read with wrap (8/16/32/64-byte), and JEDEC-compliant SFDP register for discoverable parameters. The /CS pin must transition high-to-low after power-up before instruction acceptance, and /WP provides active-low hardware write protection for status register and memory blocks.

Key Specifications

Pinout & Package

W25Q128JVSJQ TR uses an 8-pin SOIC 208-mil (Package Code S) package with exposed pad not present. Pin functions are fixed per JEDEC-standard SPI interface layout and support both Standard/Dual SPI and Quad SPI (with QE=1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L12833FZNI-08G and S25FL128SAGMFI000, the W25Q128JVSJQ TR offers higher 133MHz Quad SPI bandwidth and integrated I/O remapping (QE-controlled), enabling faster code execution and simpler PCB layout - but lacks dedicated /RESET, requiring software reset or external circuitry in fail-safe designs.

Availability

W25Q128JVSJQ TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU boot memory, and IoT edge gateway configuration requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for W25Q128JVSJQ TR 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 company specializing in specialty memory solutions, including SPI NOR/NAND flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.

The W25Q series targets cost-sensitive, space-constrained embedded systems requiring high-speed serial flash with robust security, endurance, and industrial reliability - optimized for MCU boot, firmware storage, and configuration retention.

FAQ

What is the maximum clock frequency supported by the W25Q128JVSJQ TR in Quad SPI mode?

The W25Q128JVSJQ TR supports up to 133 MHz on the CLK pin in Quad SPI mode, delivering an effective data rate of 532 MHz (133 MHz × 4 lines). This enables 66 MB/s continuous read throughput using Fast Read Quad I/O (EBh) instruction, verified per AC Electrical Characteristics Table 9.6 in the official datasheet.

Does the W25Q128JVSJQ TR include a hardware reset pin (/RESET)?

No, the W25Q128JVSJQ TR in SOIC-8 (Package Code S) does not include a dedicated /RESET pin. Hardware reset is only available on SOIC-16 and TFBGA packages. For W25Q128JVSJQ TR, system-level reset must be implemented via software sequence (66h + 99h) or external logic controlling /CS and power sequencing.

How is Quad SPI functionality enabled on the W25Q128JVSJQ TR?

Quad SPI is enabled by setting the Quad Enable (QE) bit in Status Register-2 (SR2) to '1' using Write Status Register-2 (31h) instruction. When QE = 1, the /WP pin becomes IO2 and /HOLD becomes IO3 - allowing four I/O lines. This remapping is non-volatile unless cleared, and must be confirmed via Read Status Register-2 (35h) before issuing Quad commands.

What package type is used by the W25Q128JVSJQ TR?

The W25Q128JVSJQ TR uses an 8-pin SOIC 208-mil package (Package Code S), with standard pinout: /CS, DO(IO1), /WP(IO2), GND, DI(IO0), CLK, /HOLD(IO3), VCC. It does not include an exposed thermal pad and is RoHS-compliant per Winbond's ordering information table.

Can the W25Q128JVSJQ TR support execute-in-place (XIP) operation?

Yes, the W25Q128JVSJQ TR supports true XIP via Fast Read Quad I/O (EBh) and Continuous Read with wrap (77h), enabling direct code execution from flash without copying to RAM. Its 133 MHz Quad SPI clock and low latency (tV < 7 ns) meet real-time MCU timing constraints for Cortex-M and RISC-V boot applications.