SPI protocol used in the STM32 bootloader
The bootloader for STM32 microcontrollers, based on Arm®(a) core(s), is an SPI slave.For all SPI bootloader operations, the NSS pin (chip select) must be low. If the NSS pin is high the communication on the SPI bus is ignored by the STM32 slave.
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STM32 、 STM32F4 Series 、 STM32F4 、 STM32F7 Series 、 STM32F7 、 STM32G0 Series 、 STM32G0 、 STM32G4 、 STM32H7 、 STM32L0 、 STM32L4 、 STM32L5 、 STM32WB 、 STM32WL 、 STM32G4 Series 、 STM32H7 Series 、 STM32L0 Series 、 STM32L4 Series 、 STM32L5 Series 、 STM32WB Series 、 STM32WL Series |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2021/6/11 |
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Rev 10 |
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AN4286 |
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776 KB |
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