Table 5 details the default pin pull state and available alternate gpio functions Learn about the different models of raspberry pi and their features, such as memory, soc, gpio, and ports Most of these alternate peripheral functions are described in detail in the bcm2711 peripherals specification document.
Raspberry Pi 4 Model B : PinOut, Datasheet & Its Working
The raspberry pi has 40 gpio pins that connect to sensors, lights, motors and other devices
Here's a map and detailed explanation of what each.
To help you with your projects and setting up your electronic circuits, here's a detailed diagram of the pin block (s) on the raspberry pi 4, model b Explore the raspberry pi 4 pinout with detailed explanations of gpio theory, power and ground distribution, communication interfaces (i²c, spi, uart), pwm pins, and safety considerations.