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    Parts    W25Q256JWEIQ
W25Q256JWEIQ

W25Q256JWEIQ

Winbond Electronics
FLASH - NOR Memory IC 256Mbit SPI - Quad I/O 133 MHz 6 ns 8-WSON (8x6)
Active722 in stock
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Overview

The W25Q256JWEIQ is a 256Mbit Serial NOR Flash memory IC designed for high-performance systems requiring fast data access and a wide bandwidth. Operating on a low-voltage 1.7V to 1.95V supply, it supports Dual and Quad SPI modes with clock speeds up to 133 MHz, achieving effective transfer rates that surpass standard asynchronous memories. This memory is organized into 32,768,000 bytes and features specialized security registers and hardware/software write protection.

Why Choose This Part

The W25Q256JWEIQ offers a significant power advantage with its 1.8V nominal operation, reducing active power consumption to as low as 6mA at 50MHz. Its Quad SPI interface provides 6ns access times, making it suitable for high-performance boot sequences and rapid data retrieval. Engineering security is enhanced through 3x256-byte security registers with OTP locks and multiple array protection modes.

Applications

Mobile and Battery-Powered Devices
Utilizes the low 1.7V to 1.95V supply range and 1uA shutdown current to extend battery life in portable electronics.
Execute-in-Place (XiP) Operations
High-speed 133 MHz Quad SPI performance enables microcontrollers to execute code directly from flash memory, reducing the need for large internal RAM.
Industrial Data Logging
Provides reliable non-volatile storage for sensor logs and system parameters with individual block/sector protection and a 64-bit unique ID.
Embedded Firmware Storage
Serves as primary storage for complex operating systems and application code in space-constrained embedded designs using the 8-WSON package.

Key Specifications

Technology FLASH - NOR
Access Time 6 ns
Memory Size 256Mbit
Memory Type Non-Volatile
Memory Format FLASH
Mounting Type Surface Mount
Package / Case 8-WDFN Exposed Pad
Clock Frequency 133 MHz
Memory Interface SPI - Quad I/O
Voltage - Supply 1.7V ~ 1.95V
Memory Organization 32M x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-WSON (8x6)
Write Cycle Time - Word, Page 5ms

Getting Started

Integration requires an SPI controller supporting Mode 0 or Mode 3; for maximum performance, ensure the host MCU supports Quad I/O SPI. Developers should consult the Discoverable Parameters (SFDP) register to automatically configure driver settings based on the device capacity and timing. Hardware design should include a decoupling capacitor close to the VCC pin and follow WSON-8 thermal land patterns for reliable soldering.

W25Q256 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Voltage Write Cycle Time - Word, Page Stock
W25Q256JWEIQ (this part) WDFN-8 1.7V 5m 722
W25Q256JVBIM TBGA-24 2.7V 3m —
W25Q256JVEIQ WDFN-8 2.7V 3m 2,357
W25Q256JVFIM SOIC-16 2.7V 3m —