MCU overview & architecture

typical MCU features:

1. core
2. memory
3. clock
4. reset, mode
5. power :low power ,backup power
6. I/O
7. communication: UART,SPI,IIC,CAN,USB,FSMC,IIS
8. A/D,D/A
9. timer   general,rtc,pwm
10. interrupts(NVIC)
11. watchdog
12. DMA

every features overview:

performance line block diagram analysis:

1. APB2 72M max; APB1  36M max, the APB which module connected to determined the module speed.(uart connected to different APB,does it matters?)
2. the number of UART.
3. DMA linked to BUS Matrix.

feature block diagram

1. introduction
2. feature
3. mode
4. function description
5. interrupt
6. register    --->configuration(clock,rate);control(*);status(*);data

application

1. modules to use
2. relationship of modules
3. module embedded to os