STM32F205ZCT7 datasheet(23/184 Pages) STMICROELECTRONICS

部件名	STM32F205ZCT7

功能描述	ARM®-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/1284KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera

PDF	184 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

23 / 184 page

DocID15818 Rev 15

23/184

STM32F20xxx

Functional overview

183

Figure 5. Multi-AHB matrix

3.8

DMA controller (DMA)

The devices feature two general-purpose dual-port DMAs (DMA1 and DMA2) with 8

streams each. They are able to manage memory-to-memory, peripheral-to-memory and

memory-to-peripheral transfers. They share some centralized FIFOs for APB/AHB

peripherals, support burst transfer and are designed to provide the maximum peripheral

bandwidth (AHB/APB).

The two DMA controllers support circular buffer management, so that no specific code is

needed when the controller reaches the end of the buffer. The two DMA controllers also

have a double buffering feature, which automates the use and switching of two memory

buffers without requiring any special code.

Each stream is connected to dedicated hardware DMA requests, with support for software

trigger on each stream. Configuration is made by software and transfer sizes between

source and destination are independent.

STM32F205ZCT7 数据表(PDF) 23 Page - STMicroelectronics