推挽、开漏、OC、OD一文解析 常说的与推挽输出相对的就是开漏输出(Open Drain Output),对于开漏输出和推挽输出的区别最普遍的说法就是开漏输出无法真正输出高电平,即高电平时没有驱动能力,需要借助外部上拉电阻完成对外驱动。 2023-01-29 13:41:52
The 1-wire protocol can be implemented using an UART [0]. In order to do this, I would like to use the same pin for input/output, and set the output to open-drain. (Similar to what can be done with two RMT channels). Is the ESP32 capable of this? My attempts so far failed ...
To do this, I need to set the BCM USART#6 TX pin as an output in Open-Drain with pull-up, so I can short it with the RX pin. Is there a way to initialize the UART with TX as Open-Drain? I saw that it is possible with GPIO, but I can't find a solution for...
开漏输出:Open drain output,不输出电压,低电平时接地,高电平时不接地。 上拉电阻:pull-up resistor, 1. I2C SDA 与 SCL 是 I2C 的两种双向信号线。 SDA:串行数据线; SCL:串行时钟线; 2. SPI SPI:Serial Peripheral Interface,是一种高速的(最高可达 10Mbps,远高于 I2C 和 UART),全双工(两根线),同步(...
The MSP430 configured for UART actively drives the pins HIGH. In open drain, a line driver would rely on a pull-up to drive the line high, and would only actively drive LOW. Does anyone know if there is a way to make the UART act like the HIGH state in I2C (open-drain)?
I²C使用2条双向开漏(Open-Drain)通讯线:SDA(Serial Data Line)用于传输数据,SCL(Serial Clock Line)用于控制通讯过程,需上拉电阻,常用电平为+5V或+3.3V。常见通讯速率有标准模式100kbit/s和快速模式400kbit/s。新一代I²C总线可以支持快速模式400 kbit/s、更快速模式1 Mbit/s、高速模式3.4 Mbit/s和 ...
I²C使用2条双向开漏(Open-Drain)通讯线:SDA(Serial Data Line)用于传输数据,SCL(Serial Clock Line)用于控制通讯过程,需上拉电阻,常用电平为+5V或+3.3V。常见通讯速率有标准模式100kbit/s和快速模式400kbit/s。新一代I²C总线可以支持快速模式400 kbit/s、更快速模式1 Mbit/s、高速模式3.4 Mbit/s和 ...
OC门,又称集电极开路(漏极开路)与非门门电路,Open Collector(Open Drain)。为什么引入OC门?实际使用中,有时需要两个或两个以上与非门的输出端连接在同一条导线上,将这些与非门上的数据(状态电平)用同一条导线输送出去。因此,需要一种新的与非门电路--OC门来实现“线与逻辑”。
_CONFIG_DATA (SRE_0_SLOW_SLEW_RATE| \DSE_6_R0_6| \SPEED_1_MEDIUM_100MHz| \ODE_0_OPEN_DRAIN_DISABLED| \PKE_1_PULL_KEEPER_ENABLED| \PUE_0_KEEPER_SELECTED| \PUS_3_22K_OHM_PULL_UP| \HYS_0_HYSTERESIS_DISABLED)/* 配置说明 : *//* 转换速率: 转换速率慢驱动强度: R0/6带宽配置 : ...
(PC0,DPMU_IO_PULL_DISABLE);//RX关闭上拉,使用外部上拉dpmu_set_io_open_drain(PB7);#elsedpmu_set_io_pull(PC0,DPMU_IO_PULL_UP);//RX需开启上拉#endif}elseif(UARTx==UART2){dpmu_set_io_reuse(PB1,THIRD_FUNCTION);dpmu_set_io_reuse(PB2,THIRD_FUNCTION);#if UART_PAD_OPENDRAIN_MODE_...