Winbond Electronics Corporation W25Q64CVTBIG TR

Overview

W25Q64CVTBIG TR from Winbond is a 64M-bit (8MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 80 MHz clock frequency, 4 KB uniform sector erase granularity, and true execute-in-place (XIP) capability via Continuous Read Mode. It operates from 2.7–3.6 V, draws 4 mA active current and <1 µA in power-down, and targets embedded code storage and parameter retention in industrial microcontroller systems.

For engineers reviewing the W25Q64CVTBIG TR datasheet, W25Q64CVTBIG TR pinout, W25Q64CVTBIG TR application, or W25Q64CVTBIG TR equivalent, key selection criteria include Quad SPI enable (QE bit), 4KB sector flexibility for firmware updates, hardware write protection via /WP and /HOLD pins, and compatibility with JEDEC-standard SFDP and Unique ID registers.

Technical Context

The W25Q64CVTBIG TR implements a SPI command-set architecture with three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), where Quad mode requires non-volatile QE bit = 1 in Status Register-2. Its block diagram integrates a 256-byte page buffer, sector/block erase logic, security registers, and SFDP register for discoverable timing and feature parameters.

It supports full instruction-level control of erase (sector/32KB/64KB/chip), program (page/quad-input), and suspend/resume operations, with status bits (BUSY, WEL, SUS) enabling precise state monitoring. Write protection combines volatile/non-volatile status register bits (BP2–BP0, TB, SEC, SRP0/SRP1) and hardware pins (/WP, /HOLD) for layered data integrity.

Key Specifications

Pinout & Package

W25Q64CVTBIG TR is packaged in an 8-pin TFBGA 8×6 mm (package code TC, 6×4 ball array), with ball pitch of 0.8 mm and RoHS-compliant matte tin finish. Pin functions are defined per JEDEC MO-241AC standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L6433FZNI-10G and S25FL164K0XMFI010, the W25Q64CVTBIG TR uniquely delivers OTP-secured registers, factory-unique 64-bit ID, and JEDEC SFDP compliance - making it the only option among the three that satisfies simultaneous requirements for secure boot, traceability, and driver portability.

Availability

W25Q64CVTBIG TR is available at Aetrix Electronics and suitable for industrial PLCs, automotive infotainment systems, and medical diagnostics equipment requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25Q64CVTBIG 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 manufacturer specializing in specialty memory solutions, including SPI NOR/NAND flash and mobile DRAM, with global foundry partnerships and ISO/TS 16949 certification.

The W25Q64CV series belongs to Winbond's SpiFlash product line, engineered for embedded systems demanding high-speed, low-power, and secure code/data storage - particularly where space-constrained PCBs preclude parallel flash.

FAQ

What is the package type and footprint of W25Q64CVTBIG TR?

W25Q64CVTBIG TR uses an 8×6 mm TFBGA package with a 6×4 ball array (package code TC), 0.8 mm ball pitch, and matte tin surface finish. It complies with JEDEC MO-241AC and is designed for reflow soldering with IPC-J-STD-020D moisture sensitivity level 3. The footprint requires 0.35 mm diameter solder pads and 0.2 mm solder mask expansion.

Does W25Q64CVTBIG TR support Quad SPI by default?

No - W25Q64CVTBIG TR requires explicit programming of the Quad Enable (QE) bit in Status Register-2 to activate Quad SPI mode. Until QE=1, /WP and /HOLD function as hardware write protect and hold inputs. Setting QE is non-volatile and persists across power cycles, but must be done via Write Status Register (01h) instruction after issuing Write Enable (06h).

How does the 4 KB sector architecture benefit firmware updates in W25Q64CVTBIG TR?

The uniform 4 KB sector erase structure in W25Q64CVTBIG TR allows partial firmware updates without erasing larger 64 KB blocks - reducing update time, minimizing flash wear, and enabling atomic patch application. Each sector can be independently protected via BP2–BP0 bits, permitting selective locking of bootloader regions while leaving application sectors writable.

Can W25Q64CVTBIG TR be used for execute-in-place (XIP) operation?

Yes - W25Q64CVTBIG TR supports true XIP via Continuous Read Mode, which reduces instruction fetch overhead to as few as 8 clock cycles per 24-bit address. When combined with Fast Read Quad I/O (EBh) at 80 MHz, it delivers deterministic sub-100 µs latency for sequential instruction reads - validated in ARM Cortex-M and RISC-V SoC reference designs.

What security features are implemented in W25Q64CVTBIG TR beyond basic write protection?

W25Q64CVTBIG TR includes three 256-byte OTP-locked security registers for storing cryptographic keys or calibration data, a 64-bit factory-unique ID for device authentication, JEDEC SFDP for tamper-resistant parameter discovery, and dual-layer write protection combining hardware pins (/WP, /HOLD) and non-volatile status register bits (SRP0/SRP1, BP2–BP0).