Winbond Electronics Corporation W25Q32FWBYIC TR

Overview

W25Q32FWBYIC TR from Winbond is a 1.8V 32M-bit serial NOR flash memory supporting Standard/Dual/Quad SPI and QPI interfaces, organized as 32,768 × 256-byte pages with 4KB uniform sector erase, 104MHz max clock, and 50MB/s continuous read throughput - deployed for XIP code execution, firmware storage, and parameter retention in space-constrained embedded controllers.

For engineers reviewing the W25Q32FWBYIC TR datasheet, W25Q32FWBYIC TR pinout, W25Q32FWBYIC TR application, or W25Q32FWBYIC TR equivalent, key selection criteria include Quad Enable (QE) bit configuration, /HOLD vs /RESET pin mapping per package, 1.65–1.95V VCC tolerance, 4KB sector granularity, and JEDEC SFDP register support for auto-configuration.

Technical Context

The W25Q32FWBYIC TR implements a dual-mode SPI/QPI command architecture: Standard SPI uses dedicated DI/DO pins, while Quad SPI repurposes /WP and /HOLD as IO2/IO3 when QE=1 in Status Register-2. It supports true execute-in-place (XIP) via Continuous Read Mode with ≤8-clock instruction overhead and wrap lengths of 8/16/32/64 bytes.

Its memory array is partitioned into 1,024 erasable 4KB sectors and 64 erasable 64KB blocks, enabling fine-grained data management. Security features include three 256-byte OTP-lockable Security Registers, 64-bit unique ID, and volatile/non-volatile status bits for top/bottom/complement/individual block protection.

Key Specifications

Pinout & Package

W25Q32FWBYIC TR is supplied in a 12-ball WLCSP (Wafer-Level Chip Scale Package), 3.2 mm × 2.5 mm × 0.5 mm, marked "BYIC" per ordering code. This ultra-compact package targets high-density portable and wearable applications where board space is critical.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MX25L3233FZC-10G and S25FL132K0XMFI010, the W25Q32FWBYIC TR uniquely combines 1.8V operation, WLCSP packaging, QPI mode, and JEDEC SFDP in a single 32Mb serial NOR device - making it irreplaceable for compact, auto-configuring, low-voltage embedded boot applications.

Availability

W25Q32FWBYIC TR is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive infotainment boot code, and IoT edge sensor node configuration requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for W25Q32FWBYIC 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 serial NOR/NAND flash, RAM, and mobile DRAM, serving industrial, automotive, and consumer markets since 1987.

The W25Q32FWBYIC TR belongs to Winbond's W25Q family of high-performance serial NOR flash devices, designed specifically for code shadowing, XIP execution, and secure firmware storage in resource-constrained embedded systems.

FAQ

What is the package type and dimensions of the W25Q32FWBYIC TR?

The W25Q32FWBYIC TR is packaged in a 12-ball WLCSP (Wafer-Level Chip Scale Package) measuring 3.2 mm × 2.5 mm × 0.5 mm, with top-side marking "BYIC". This package is optimized for ultra-compact PCB layouts in portable and wearable electronics where board area is at a premium. The W25Q32FWBYIC TR uses ball assignments defined in Winbond's datasheet revision H for WLCSP12, including dedicated VCC, GND, CLK, /CS, DI, DO, /WP, and configurable /HOLD or /RESET on B2.

Does the W25Q32FWBYIC TR support Quad SPI mode, and how is it enabled?

Yes, the W25Q32FWBYIC TR supports Quad SPI mode via its IO0–IO3 pins, but it requires setting the Quad Enable (QE) bit in Status Register-2 (SR2) to '1'. When QE=1, the /WP and /HOLD pins become IO2 and IO3 respectively. This configuration is non-volatile if written with appropriate SRP bits set. The W25Q32FWBYIC TR also supports QPI mode (entered via 38h instruction), which further reduces instruction overhead by using 4-bit command and data lanes simultaneously.

What is the minimum and maximum supply voltage for reliable operation of the W25Q32FWBYIC TR?

The W25Q32FWBYIC TR operates reliably within a supply voltage range of 1.65 V to 1.95 V. This 1.8V nominal range is strictly enforced - operation outside this window may cause undefined behavior, failed writes, or premature wear. The W25Q32FWBYIC TR does not support 3.3V or dual-voltage operation. Decoupling with a 100nF ceramic capacitor placed within 2 mm of the VCC and GND balls is mandatory for stable high-speed timing.

How many program/erase cycles and data retention years does the W25Q32FWBYIC TR guarantee?

Winbond specifies a minimum endurance of 100,000 program/erase cycles per 4KB sector and data retention exceeding 20 years at 25°C ambient temperature for the W25Q32FWBYIC TR. These values are validated under JEDEC JESD22-A117 conditions and apply to all sectors across the full memory array. Retention degrades predictably with temperature; at 85°C, retention is rated for ≥10 years. The W25Q32FWBYIC TR includes Erase/Program Suspend & Resume commands to minimize cycle wear during interrupt-driven operations.

Can the W25Q32FWBYIC TR be used for execute-in-place (XIP) applications, and what feature enables this?

Yes, the W25Q32FWBYIC TR supports true execute-in-place (XIP) operation through its Continuous Read Mode, which reduces instruction overhead to as few as 8 clock cycles for addressing - enabling efficient sequential access without repeated command transmission. Combined with Quad SPI or QPI interfaces delivering up to 416 MHz effective bandwidth, the W25Q32FWBYIC TR allows microcontrollers to fetch and execute code directly from flash memory, eliminating the need for RAM shadowing in many embedded applications.