STM32??NUC120??????????????
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USART:
STM32 ??USART ???FIFO , NUC ????64\16 BYTE FIFO
STM32 ??USART ???????С?? ????????????????????. NUC ????????!
SPI : STM32 ??SPI ???FIFO , NUC ???? 2 ?? FIFO
I2C : STM32 ??? 400K , NUC ??????? 1M
GPIO : STM32 ?ж? ???? 16?? GPIO (????? ??????,?λ IO ?????) , NUC ??????????? GPIO
I2S : STM32 ?? SPI ?ǹ???? ????? ?? ?????, NUC ?? I2S ??????? ????!
ADC : STM32 ?? ??????? ???! NUC ???? 800K ???????????? 10 BIT , ????????? ;
DAC : STM32 ????·??? , NUC ???DAC
DMA : STM32 ??FIFO NUC ???????!
?????????? STM32?? NUC ?? FLASH ???????!???????
A = 1 ; B = 1 ;
while(1)
{
A = A + B ;
if( A == 10000000) //1????????
{
A = 1 ;
// IO ??????????
if(GPIOA->DOUT == 0XFFFF)GPIOA->DOUT = 0 ;
else GPIOA->DOUT = 0XFFFF ;
}
????}
NUC FLASH ???????
24MHZ STM32 FLASH_SetLatency = 0 T = 3.38S NUC 6.30S
48MHZ STM32 FLASH_SetLatency = 1 T = 2.95S NUC 3.15S
60MHZ δ???? NUC T = 2.46S ??NUC ??? 60M
72MHZ STM32 FLASH_SetLatency = 2 T = 2.39S NUC 2.10S ???72M????
????admin ?????????2019-06-15
