FCLK为CPU核供给时钟信号，1/Fclk即为cpu时钟周期。HCLK为AHB bus peripherals供给时钟信号，AHB为advanced high-performance bus。PCLK为APB bus peripherals供给时钟信号，APB为advanced peripherals bus
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羧酸|涂料乳液及成膜物质|化工产品加工|其他助剂
FCLK为CPU核供给时钟信号，1/Fclk即为cpu时钟周期。HCLK为AHB bus peripherals供给时钟信号，AHB为advanced high-performance bus。PCLK为APB bus peripherals供给时钟信号，APB为advanced peripherals bus
