LED Control with PIC18F4550

flux

0:30

Your request is to wire the PIC18F4550 (designator U1), four red LED components (designators D1 through D4), and their corresponding 330Ω current‐limiting resistors (designators R1 through R4) in the schematic. The intended connection scheme is as follows:

Table

ConnectionDescription
U1 Output for D1Connect a selected digital output pin of the PIC18F4550 (for example, RC0) to one end of R1 (330Ω), then connect the other end of R1 to the anode of D1. The cathode of D1 is connected to the common ground.
U1 Output for D2Connect another digital output pin (e.g., RC1) to R2 (330Ω), then connect R2 to the anode of D2; the cathode of D2 goes to ground.
U1 Output for D3Connect a third digital output pin (e.g., RC2) to R3 (330Ω), then connect R3 to the anode of D3; the cathode of D3 is connected to ground.
U1 Output for D4Connect a fourth digital output pin (e.g., RC3) to R4 (330Ω), then connect R4 to the anode of D4; the cathode of D4 is connected to ground.
Common GroundAll LED cathodes and the PIC18F4550 ground pins are tied together using a Ground component.
This configuration ensures that each LED-resistor pair is individually controlled by the PIC18F4550 with sequential activation logic (for a 1-second delay between each LED turn-on) across designated output pins.
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R3
Resistance
500 Ω
VDD
R2
Resistance
500 Ω
RA5/AN4/SS/HLVDIN/C2OUT
RC4/D-/VM
RD7/SPP7/P1D
RE3/MCLR/VPP
RC1/T1OSI/CCP2(1)/UOE
RE3/MCLR/VPP
RE2/AN7/OESPP
RD4/SPP4
RC5/D+/VP
RE0/AN5/CK1SPP
VSS
RD1/SPP1
RD3/SPP3
RB7/KBI3/PGD
RC2/CCP1/P1A
RD2/SPP2
RC6/TX/CK
R1
Resistance
500 Ω
RB0/AN12/INT0/FLT0/SDI/SDA
RD5/SPP5/P1B
RE1/AN6/CK2SPP
RB6/KBI2/PGC
RA1/AN1
RC0/T1OSO/T13CKI
RA3/AN3/VREF+
R4
Resistance
500 Ω
RB2/AN8/INT2/VMO
RD6/SPP6/P1C
RB3/AN9/CCP2(1)/VPO
RB1/AN10/INT1/SCK/SCL
RD0/SPP0
RA4/T0CKI/C1OUT/RCV
RA0/AN0
RC7/RX/DT/SDO
RB4/AN11/KBI0/CSSPP
RA2/AN2/VREF-/CVREF
RB5/KBI1/PGM
OSC2/CLKO/RA6
LED2
LED1
U1
LED4
LED3
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PIC18F4550 thumbnail
The Microchip PIC18F2455/2550/4455/4550 series comprises high-performance, enhanced flash USB microcontrollers featuring nanoWatt technology. These devices are designed to operate with a wide voltage range (2.0V to 5.5V) and offer a variety of features including USB V2.0 compliant modules supporting low speed (1.5 Mb/s) and full speed (12 Mb/s) communication, up to 32 endpoints, and 1-Kbyte dual access RAM for USB. Additionally, they are equipped with a comprehensive set of peripherals such as high-current sink/source I/O ports, multiple timers, up to 13-channel 10-bit Analog-to-Digital Converters, Enhanced Capture/Compare/PWM (ECCP) modules, and serial communication interfaces including MSSP and EUSART modules. These microcontrollers are particularly suitable for applications requiring connectivity, precise timing, and analog interfacing in power-sensitive designs, thanks to their flexible oscillator structure, power-managed modes, and extended instruction set optimized for C compiler use. The devices' memory configuration includes up to 32K bytes of flash program memory, 2K bytes of RAM, and 256 bytes of EEPROM, supporting a wide range of application requirements.

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