M4 可以操作哪些外设? M4 内部有 systick 吗?M4 可以操作的外设有 DEMO 参考吗?
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1.5.2 MCU General Purpose Input/Output Interface (MCU_GPIO) Integrated in MCU domain: One General Purpose Input/Output (MCU_GPIO) module provides dedicated general-purpose pins that can be configured as either inputs or outputs. the MCU_GPIO module includes these main features: • Support of 9 banks x 16 GPIO pins • Support of up to 9 banks of interrupt capable GPIOs • Interrupts can be triggered by rising and/or falling edge, specified for each interrupt capable GPIO pin • Set/clear functionality per individual GPIO pin
9 banks x 16 GPIO pins 分配在哪些管脚上?
GPMC0_WAIT1
VOUT0_EXTPCLKIN
GPMC0_A21
UART6_RXD
GPIO0_38
EQEP2_I
DATA SHEET 中标 GPIO_38 是 MCU GPIO 吗?