The DMA modules of the STM32F4 microcontroller
Each STM32F4 microcontroller is equipped with two DMA controllers, each supporting up to 8 streams. Each stream can manage multiple requests, providing up to 16 streams in total to handle various data transfer tasks. A stream is a unidirectional pathway that facilitates data transfer between a source and a destination. The architecture includes an arbiter to prioritize these DMA requests, ensuring that high-priority transfers are handled promptly.
Let’s see some key features of the STM32F4 DMA controller.
The key features of the STM32F4 DMA controller
The following are the key features of the STM32F4 DMA controller:
- Independent FIFO: Each stream includes a four-word FIFO buffer, which can operate in either direct mode or FIFO mode. In direct mode, data transfers occur immediately upon request, while FIFO mode allows for threshold-level buffering, enhancing efficiency for burst data transfers.
- Flexible configuration...
