Winbond Electronics Corporation W25Q128FVCJQ TR

Overview

W25Q128FVCJQ TR from Winbond is a 128M-bit (16MB) serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces, operating at 2.7–3.6V with 104MHz clock rate, 4KB uniform sector erase granularity, and integrated hardware write protection via /WP and /HOLD pins - deployed in embedded boot code storage, firmware update partitions, and XIP-capable microcontroller systems.

For engineers reviewing the W25Q128FVCJQ TR datasheet, W25Q128FVCJQ TR pinout, W25Q128FVCJQ TR application, or W25Q128FVCJQ TR equivalent, key selection criteria include Quad Enable (QE) bit configuration for IO2/IO3 remapping, 4KB sector flexibility for parameter storage, JEDEC ID/SFDP register support for auto-detection, and TFBGA-24 (8×6-mm) package compatibility with high-density PCB layouts.

Technical Context

The W25Q128FVCJQ TR implements a quad I/O SPI architecture where IO0–IO3 serve bidirectional data paths under QPI mode, enabled by non-volatile QE bit (Status Register-2, bit 1); standard SPI uses unidirectional DI/DO, while Dual/Quad modes require status register configuration and specific instruction sets (e.g., 6Bh for Fast Read Quad Output).

It features volatile/non-volatile status register bits controlling block protection (BP2–BP0), top/bottom lock (TB), security register locks (LB3–LB1), and output driver strength (DRV1/DRV0), with hardware-level write protection enforced via active-low /WP and /HOLD pins - both repurposed as IO2/IO3 when QE=1, requiring careful pinmux planning in host controller design.

Key Specifications

Pinout & Package

W25Q128FVCJQ TR is packaged in 24-ball TFBGA (8×6-mm, 5×5 ball array, Package Code B), with 1.0 mm pitch and bottom-side thermal pad. Pin functions are defined per ball position per Winbond datasheet Figure 1d (Package Code B) and Section 3.7.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L12833FZC-10G and S25FL128SAGMFI001, W25Q128FVCJQ TR delivers higher Quad SPI bandwidth (416 MB/s vs. 320 MB/s), built-in SFDP auto-configuration, and integrated security registers - making it optimal for XIP-critical, firmware-update-intensive, and secure provisioning use cases where timing agility and parameter flexibility are prioritized.

Availability

W25Q128FVCJQ TR is available at Aetrix Electronics and suitable for industrial HMIs, IoT edge gateways, medical diagnostic instruments, and automotive camera modules requiring stable component supply, long-lifecycle support, and RoHS-compliant TFBGA packaging.

Supply support for W25Q128FVCJQ 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 DRAM, mobile DRAM, and serial flash memory solutions since 1987.

The W25Q series targets cost-sensitive, space-constrained embedded systems needing high-speed, low-power, and secure code/data storage - with emphasis on XIP capability, flexible protection schemes, and JEDEC-standard interoperability.

FAQ

What is the package type and footprint compatibility of W25Q128FVCJQ TR?

W25Q128FVCJQ TR uses a 24-ball TFBGA package (8×6-mm, 5×5 ball array, Package Code B) with 1.0 mm pitch and bottom thermal pad. It shares mechanical footprint and solder mask layout with Winbond's W25Q128FV variants in Code B, but differs from Code C (6×4 array) and SOIC/WSON variants - PCB land pattern must match Code B ball map per datasheet Figure 1d.

Does W25Q128FVCJQ TR support hardware reset, and how is it implemented?

W25Q128FVCJQ TR does not include a dedicated /RESET pin in its TFBGA-24 (Code B) package. The D4 ball functions as /HOLD or /RESET depending on Status Register configuration - but only when QE=0. When QE=1 (Quad mode), D4 becomes IO3 and /RESET is unavailable. True hardware reset requires external circuitry or software reset (66h/99h instructions).

How is Quad SPI mode enabled on W25Q128FVCJQ TR, and what pins change function?

Quad SPI mode on W25Q128FVCJQ TR is enabled by setting the Quad Enable (QE) bit (Status Register-2, bit 1) to '1' via Write Status Register-2 (31h) instruction. When QE=1, the /WP pin (C4) becomes IO2 and /HOLD or /RESET pin (D4) becomes IO3 - both pins lose hardware protection functions and serve as bidirectional data lanes in Quad I/O transactions.

What is the purpose and accessibility of the SFDP register in W25Q128FVCJQ TR?

The SFDP (Serial Flash Discoverable Parameters) register in W25Q128FVCJQ TR is a JEDEC JESD216-compliant 256-byte table storing timing, voltage, and command-set parameters. It is read using instruction 5Ah and enables host controllers to auto-configure read latencies, dummy cycles, and voltage thresholds - eliminating hardcoded timing values and improving cross-flash compatibility.

Can W25Q128FVCJQ TR be used for secure key storage, and which features enable this?

Yes, W25Q128FVCJQ TR supports secure key storage via three 256-byte Security Registers (SR1–SR3), each protected by one-time-programmable (OTP) lock bits LB1–LB3. Once locked, contents cannot be read or rewritten. Keys, certificates, or calibration secrets can be written during manufacturing and permanently sealed - providing tamper-resistant storage independent of main array protection schemes.