Winbond Electronics Corporation W25Q16JWUUIQ TR

Overview

W25Q16JWUUIQ TR from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock frequency, 66MB/s continuous read throughput, and industrial-grade -40°C to +85°C operation. It features uniform 4KB sectors, 100K program-erase cycles, >20-year data retention, and hardware/software write protection for embedded code storage and parameter logging.

For engineers reviewing the W25Q16JWUUIQ TR datasheet, W25Q16JWUUIQ TR pinout, W25Q16JWUUIQ TR application, or W25Q16JWUUIQ TR equivalent, key selection criteria include Quad I/O support (QE bit), /WP and /HOLD pin functionality in Standard/Dual mode, 1.65–1.95V supply range, sector-level lock granularity, and USON 4×3-mm package compatibility with space-constrained PCB layouts.

Technical Context

The W25Q16JWUUIQ TR implements a flexible SPI interface architecture supporting three operational modes: Standard SPI (DI/DO), Dual SPI (IO0/IO1), and Quad SPI (IO0–IO3), with Quad mode requiring non-volatile QE bit setting in Status Register-2. Its memory array comprises 8192 × 256-byte pages organized into 512 erasable 4KB sectors and 32 erasable 64KB blocks.

It integrates volatile/non-volatile status register bits for block/sector protection (BP2–BP0, TB, SEC, CMP), security registers (3 × 256 bytes), 64-bit unique ID, SFDP register, and Erase/Program Suspend/Resume functionality - all accessible via defined instruction set including Fast Read Quad I/O (EBh) and Quad Input Page Program (32h).

Key Specifications

Pinout & Package

W25Q16JWUUIQ TR is supplied in an 8-pad USON 4×3-mm package (Package Code UU), with exposed pad for thermal dissipation and footprint optimized for high-density PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L1633FZUI-13G and S25FL132K0XMFI010, the W25Q16JWUUIQ TR uniquely balances Quad SPI speed (133MHz), sector-level locking, suspend/resume, and USON4x3-mm footprint - making it optimal for space-constrained industrial and medical devices needing both performance and data integrity.

Availability

W25Q16JWUUIQ TR is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic equipment, smart utility meters, and automotive camera modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for W25Q16JWUUIQ 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 global leader in specialty memory solutions, founded in 1987 and publicly listed on the Taiwan Stock Exchange.

The W25Q series is designed specifically for embedded systems requiring high-speed, low-voltage, and secure serial flash - targeting code execution (XIP), firmware storage, and parameter logging in industrial, medical, and automotive applications.

FAQ

What is the maximum supported SPI clock frequency for W25Q16JWUUIQ TR in Quad I/O mode?

The W25Q16JWUUIQ TR supports up to 133 MHz in Quad I/O mode, enabling a theoretical peak throughput of 532 Mbps using Fast Read Quad I/O (EBh) instructions. This specification is guaranteed across the full industrial temperature range (-40°C to +85°C) and 1.65–1.95 V supply, as verified in AC Electrical Characteristics section of the official datasheet (Rev G, June 2021).

Does W25Q16JWUUIQ TR support hardware reset via a dedicated /RESET pin?

No, the W25Q16JWUUIQ TR does not include a dedicated hardware /RESET pin. The /HOLD pin (Pin 7 in USON) serves dual function as /HOLD or /RESET only in SOIC-16 and TFBGA packages - not in the USON 4×3-mm variant (UU code) of W25Q16JWUUIQ TR. Reset must be performed via software sequence (66h followed by 99h) as documented in Section 6.4.

How is Quad SPI mode enabled on W25Q16JWUUIQ TR?

Quad SPI mode on W25Q16JWUUIQ TR is enabled by setting the Quad Enable (QE) bit in Status Register-2 using Write Status Register-2 (31h) instruction. Once QE = 1, pins /WP and /HOLD become IO2 and IO3 respectively. The change is non-volatile unless cleared; standard SPI and Dual SPI remain functional but require QE=0 to retain /WP and /HOLD functionality.

What package type is used for W25Q16JWUUIQ TR, and what are its key mechanical features?

W25Q16JWUUIQ TR uses the 8-pad USON 4×3-mm package (Package Code UU), featuring a wettable flank design for automated optical inspection, an exposed thermal pad for improved heat dissipation, and 0.5 mm pitch. It complies with JEDEC MO-255 and is compatible with standard reflow profiles for lead-free assembly.

Can W25Q16JWUUIQ TR be used for secure key storage in cryptographic applications?

Yes, W25Q16JWUUIQ TR supports secure key storage via three 256-byte Security Registers (addressable via 42h/44h/48h), each programmable once (OTP) under specific flow conditions. Combined with individual block locking (36h/39h), 64-bit unique ID, and SRP-controlled status register write protection, it provides layered security suitable for cryptographic key, calibration, or credential storage in certified medical and industrial systems.