Winbond Electronics Corporation W25Q16JWXHSQ

Overview

W25Q16JWXHSQ from Winbond is a 1.8V, 16M-bit (2MB) serial NOR flash memory IC supporting Standard, Dual, and Quad SPI interfaces with up to 133MHz clock rate, 4KB uniform sector architecture, and industrial temperature range (–40°C to +85°C). It serves as non-volatile code/data storage in microcontroller boot systems, firmware update storage, and embedded configuration memory.

For engineers reviewing the W25Q16JWXHSQ datasheet, W25Q16JWXHSQ pinout, W25Q16JWXHSQ application, or W25Q16JWXHSQ equivalent, key selection criteria include Quad I/O throughput (532MB/s effective), hardware /WP and /HOLD control, JEDEC SFDP register support, 100K program-erase cycles, and compatibility with XIP (execute-in-place) architectures requiring low-latency read access.

Technical Context

The W25Q16JWXHSQ implements a flexible SPI interface with three operational modes: Standard (DI/DO), Dual (IO0/IO1), and Quad (IO0–IO3), enabled via the non-volatile Quad Enable (QE) bit in Status Register-2. Its 8192 × 256-byte pages support 1–256 byte programming and erase granularity at 4KB/32KB/64KB/whole-chip levels.

It integrates volatile and non-volatile status/configuration registers including Block Protect (BP2–BP0), Top/Bottom (TB), Sector Protect (SEC), Complement Protect (CMP), Security Register Locks (LB1–LB3), and Output Driver Strength (DRV1/DRV0), all accessible via dedicated SPI instructions and protected by SRP/SRL bits.

Key Specifications

Pinout & Package

W25Q16JWXHSQ is packaged in an 8-pin SOIC 208-mil (Package Code SS), with pin 1 marked by a dot or beveled corner. The package supports standard reflow and conforms to JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L1633FZUI-13G and S25FL132K0XMFI010, W25Q16JWXHSQ offers optimal balance of 1.8V compatibility, 133 MHz Quad I/O performance, industrial temperature grade, and integrated security features - making it the preferred choice for new 1.8V embedded designs requiring robust, future-proof firmware storage.

Availability

W25Q16JWXHSQ is available at Aetrix Electronics and suitable for IoT edge node firmware storage, industrial PLC configuration memory, medical diagnostic bootloader hosting, and automotive ADAS camera module calibration storage requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance.

Supply support for W25Q16JWXHSQ 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 serial NOR/NAND flash, RAM, and mobile DRAM, with global manufacturing and quality certifications.

The W25Q series targets high-performance, low-voltage embedded systems requiring reliable code storage, fast XIP capability, and advanced security - designed specifically for industrial, automotive, and medical applications demanding extended temperature operation and long-term data integrity.

FAQ

What is the operating voltage range for W25Q16JWXHSQ?

The W25Q16JWXHSQ operates from 1.65V to 1.95V, making it compatible with modern 1.8V logic families without external level shifters. This narrow supply range ensures stable internal voltage regulation and low-power operation, with typical power-down current below 0.1 µA. All AC and DC specifications in the datasheet are guaranteed across this full voltage window, and W25Q16JWXHSQ must not be operated outside these limits to maintain reliability and data retention.

Does W25Q16JWXHSQ support execute-in-place (XIP) operation?

Yes, W25Q16JWXHSQ supports XIP via its high-speed Quad SPI interface, particularly using Fast Read Quad I/O (EBh) instruction at up to 133 MHz. When paired with an SoC or MCU that includes a Quad SPI memory controller with prefetch and caching, W25Q16JWXHSQ enables direct code execution from flash - eliminating the need to copy firmware to RAM before boot. The 4KB uniform sector architecture further enhances XIP efficiency by allowing precise mapping of critical boot code sections.

How is hardware write protection implemented on W25Q16JWXHSQ?

W25Q16JWXHSQ implements hardware write protection via the active-low /WP pin (Pin 3), which - when held low - prevents writes to the status register regardless of software commands. This protection works in conjunction with non-volatile block protect bits (BP2–BP0, TB, SEC) and the Status Register Protect (SRP/SRL) bits. For full array protection, /WP must be asserted low and BP2–BP0 set to '111' (protect all sectors); W25Q16JWXHSQ retains this state through power cycles unless explicitly unlocked via Write Status Register instruction.

What package type does W25Q16JWXHSQ use, and is it RoHS compliant?

W25Q16JWXHSQ uses the 8-pin SOIC 208-mil package (Package Code SS), with lead-free, halogen-free construction compliant with RoHS Directive 2011/65/EU and REACH SVHC regulations. The package features gull-wing leads, 1.27 mm pitch, and is qualified for standard SnPb and Pb-free reflow profiles per J-STD-020. Marking on top includes "W25Q16JW" and date code; full compliance documentation is available upon request for W25Q16JWXHSQ.

Can W25Q16JWXHSQ be used in automotive applications?

W25Q16JWXHSQ is rated for industrial temperature (–40°C to +85°C) and is widely deployed in automotive ADAS camera modules, infotainment head units, and body control modules - though it is not AEC-Q100 qualified. For production automotive use, Winbond offers the pin-compatible W25Q16JWxIQ variant (with AEC-Q100 Grade 3 qualification). W25Q16JWXHSQ remains suitable for prototyping, Tier-2 subsystems, and non-safety-critical functions where industrial-grade reliability suffices.