![]() PGC: In-Circuit Debugger and ICSP programming clock pin. PGM: Low-Voltage ICSP Programming enable pin SCL: Synchronous serial clock input/output for I2C modeĬCP2: Capture 2 input/Compare 2 output/PWM2 output SCK: Synchronous serial clock input/output for SPI mode VUSB:Internal USB 3.3V voltage regulator outputĭ-: USB differential minus line (input/output)ĭ+: USB differential plus line (input/output).ĬK: EUSART synchronous clock (see RX/DT).įLT0: Enhanced PWM Fault input (ECCP1 module) T13CKI: Timer1/Timer3 external clock inputĬCP2:Capture 2 input/Compare 2 output/PWM2 outputĬCP1: Capture 1 input/Compare 1 output/PWM1 output. VREF+: A/D reference voltage (high) input We will describe each pin functions briefly below.ĬVREF: Analog comparator reference output These features can be enabled through programming depending on requirement. So many pins of controller have multiple features. There are so many features for a controller the manufacturer cannot provide that many I/O pins. It is a 40 pin device as shown in PIC18F4550 pin diagram. PIC18F4550 comes in various packages like DIP, QPF and QPN and can be selected according to the project requirement. ![]() This is an 8-bit microcontroller popular among makers and engineers due its features and easy applications. PIC18F4550 is one of popular Microcontrollers from the microchip technology, comes with a High-Performance, Enhanced flash, USB Microcontroller with nano-Watt-Technology. PIC18F4550 belongs to ‘ PIC18F’ family of microcontrollers. ![]()
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