【Open-Drain与Push-Pull】 GPIO的功能,简单说就是可以根据自己的需要去配置为输入或输出。(General Purpose Input Output,简称为GPIO或总线扩展器,利用工业标准I2C、SMBus™或SPI™接口简化了I/O口的扩展。当微控制器或芯片组没有足够的I/O端口,或当系统需要采用远端串行通信或控制时,GPIO产品能够提供额外的控...
推挽输出的力量与限制推挽输出，即Push Pull Output，是一种双向驱动方式。当内部信号为低电平时，PMOS和NMOS交替工作，一个导通，一个截止，驱动输出端可达电源电压（输出电流）或地（从负载汲取电流）。它能真正实现高电平和低电平的输出，适合驱动小功率的数字设备。然而，推挽结构不宜在总线配置中串联...
GPIO(General Purpose Input Output)是通用输入/输出端口;每个GPIO端口可通过软件分别配置成输入或输出;输出又分为推挽式(Push-Pull)和开漏式(Open-Drain)。 USART(Universal Synchronous/Asynchronous Receiver/Transmitter)是通用同步/异步串行接收/发送器,支持全双工操作;可设置波特率,数据位,停止位,校验位等。 PWM(Pu...
IPD(In Pull Down)是下拉输入 GPIO_Mode_IPU=0x48, IPU(In Pull Up)是上拉输入 GPIO_Mode_Out_OD=0x14, Out_OD(Out Open Drain)是开漏输出 GPIO_Mode_Out_PP=0x10, Out_PP(Out Push Pull)是推挽输出 GPIO_Mode_AF_OD=0x1C, AF_OD(Atl Open Drain)是复用开漏 GPIO_Mode_AF_PP=0x18 AF_PP(...
*推挽式输出General purpose output push-pull *开漏输出 General purpose output Open-drain *推挽式复用功能 Alternate function output Push-pull *开漏复用功能Alternate function output Open-drain 二、GPIO相关寄存器 “什么是寄存器?寄存器是有限存储容量的高速存储部件,是CUP内的组成部分。可以用来暂存指令、数据和...
复用开漏输出(Alternate function output push-pull) 复用推挽输出(Alternate function output open-drain) 每种输出模式又可通过MODEy配置3种速度: 01 最高输出速度10 MHz 10 最高输出速度 2 MHz 11 最高输出速度50 MHz 综上,每个GPIO引脚有4种输入模式和4种输出模式,每种输出模式又有3种速度。可见,通过配置...
3.10 General-purpose inputs/outputs (GPIOs) Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as input (with or without pull-up or pull-down) or as peripheral alternate function (AF). Most of the GPIO pins are shared with special digital or ...
3.10 General-purpose inputs/outputs (GPIOs) Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as input (with or without pull-up or pull-down) or as peripheral alternate function (AF). Most of the GPIO pins are shared with special digital or ...
– 1x 12-bit DAC output channels, low-power sample and hold – 1x operational amplifier with built-in PGA – 2x ultra-low-power comparators – Accurate 2.5 V or 2.048 V reference voltage buffered output •16x communication interfaces – 1x SAI (serial audio interface) –4x I2C FM...
Output functions 346 26.2.4 NOR Control functions 346 26.2.5 NOR State functions 346 26.2.6 HAL_NOR_Init 346 26.2.7 HAL_NOR_DeInit 347 26.2.8 HAL_NOR_MspInit 347 26.2.9 HAL_NOR_MspDeInit 347 26.2.10 HAL_NOR_MspWait 347 26.2.11 HAL_NOR_Read_ID 348 26.2.12 HAL_NOR_ReturnTo...