How many input and output ports are there in a microcontroller?
In our MCU there are 5 digital Input/output ports [A, B, C, D, and E]. It’s common in 8-Bit microcontrollers to have I/O ports each of which has up to 8-pins. However, some I/O ports may have less than 8-pins as in our PIC16F877A for examples.
What are the digital input and output pins on AVR?
AVR® 8-bit microcontrollers control applications through their digital Input and Output (I/O) pins. These pins can monitor any voltage present as a high impedance input and supply or sink current as a high or low voltage digital output. These pins are usually organized in groups of eight and referred to as a port.
How to write input pin to output pin?
Writing 1 (High) to a single bit of the TRISx register configures the pin corresponding to this bit to be an input pin. Writing 0 (Low) to a single bit of the TRISx register configures the pin corresponding to this bit to be an output pin.
How many I / O ports does the lm4f120h5qr have?
The LM4F120H5QR has eight UART ports, four SSI ports, four I2C ports, two 12-bit ADCs, twelve timers, a CAN port, and a USB interface. The TM4C123GH6PM adds up to 16 PWM outputs. There are 43 I/O lines. There are twelve ADC inputs; each ADC can convert up to 1M samples per second.
How to control the I / O port on a PIC?
Controlling or driving the I/O port is a pretty easy process. It involves only two consecutive steps. Configure The Pin, determine the data direction, whether it’s an Input or Output Read / Write. If the pin is configured to be an input pin, then you’ll be reading (polling) its state several times within your program.
How to write a high or low voltage to a digital pin?
[Digital I/O] Write a HIGH or a LOW value to a digital pin. If the pin has been configured as an OUTPUT with pinMode(), its voltage will be set to the corresponding value: 5V (or 3.3V on 3.3V boards) for HIGH, 0V (ground) for LOW.