Which has a higher frame rate: QSPI interface or 8080 MCU interface for LCD? Has anyone done actual testing?

Troubleshooting
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Which has a higher frame rate, the QSPI interface or the 8080 MCU interface, has anyone actually tested this?

Does the 8080 interface use DMA for screen refreshing?

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  1. The 8080 interface uses DMA for screen refresh and has been adapted for the st7789 driver.
  2. QSPI (4 data lines) supports DDR mode, so under the same frequency, the bandwidth is similar to 8080-8bit. Both use DMA for screen refresh.
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You can use the calculator on this page to estimate the frame rate for scrolling displays:
LCD Frame Rate Calculator - SiFli-Wiki v1.0 Documentation

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