Quad SPI

The Evolution of SPI Protocol: From Single Lane to Full Interchange

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Unveiling the Speed Leap of Communication Interfaces in Embedded Development Chapter 1: Country Road – Standard SPI Imagine a quiet two-way single-lane country road. This is Standard SPI, which forms the foundation of all advanced modes. It primarily relies on four lines for communication: • SCLK (Clock Line): Like a metronome, generated by the master … Read more

The Simplest Way to Program SPI FLASH

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The Simplest Way to Program SPI FLASH

Today, a customer asked us whether the programming speed of our SOP8 Flash chip would increase if the QE=1 setting is applied. Let us revisit the concept of SPI Flash chips. SPI FLASH typically supports the following communication modes: Standard SPI (Single/Dual/Quad) 1. Single SPI (Single Line Mode): Uses IO0 (MOSI) to send data, IO1 … Read more