HomeCommunitySubjectPIC18F4550 Microcontroller: PIC18F4550 Datasheet, Pinout and Programming [FAQ]

PIC18F4550 Microcontroller: PIC18F4550 Datasheet, Pinout and Programming [FAQ]

Embedded - Microcontrollers A/D 13x10b 40-DIP (0.600, 15.24mm) 32kB Brown-out Detect/Reset, HLVD, POR, PWM, WDT -40°C~85°C TA 4.2V~5.5V PIC? 18F MICROCONTROLLER PIC18F4550 48MHz IC MCU 8BIT 32KB FLASH 40DIP

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Nov 6, 2021

Candice Emma

How to program the PIC18F4550 microcontroller (blink demo board) part 1 of 8

Embedded - Microcontrollers A/D 13x10b 40-DIP (0.600, 15.24mm) 32kB Brown-out Detect/Reset, HLVD, POR, PWM, WDT -40°C~85°C TA 4.2V~5.5V PIC® 18F MICROCONTROLLER PIC18F4550 48MHz IC MCU 8BIT 32KB FLASH 40DIP

PIC18F4550 is an 8-bit microcontroller featuring nano-Watt technology, improved flash, USB, and high performance. This article is going to explain the datasheet, pinout, applications, programming, and more details about the PIC18F4550 microcontroller.

PIC18F4550-I/P

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PIC18F4550 Pinout

PIC18F4550 Pinout

Pin Number	Pin Name	Description
1	MCLR/VPP/RE3	MCLR: Master Clear(RESET) Input VPP: programming voltage input RE3: I/O pin of PORTE, PIN 3
2	RA0/AN0	RA0: I/O pin of PORTA, PIN 0 AN0: Analog input 0
3	RA1/AN1	RA1: I/O pin of PORTA, PIN 1 AN1: Analog input 1
4	RA2/AN2/VREF-/CVREF	RA2: I/O pin of PORTA, PIN 2 AN2: Analog input 2 VREF-: A/D reference voltage (low) input CVREF: Analog comparator reference output
5	RA3/AN3/VREF+	RA3: I/O pin of PORTA, PIN 3 AN3: Analog input3 VREF+: A/D reference voltage (high) input
6	RA4/T0CKI/C1OUT/RCV	RA4: I/O pin of PORTA, PIN 4 T0CKI: Timer0 external clock input C1OUT: Comparator 1 output RCV: External USB transceiver RCV input
7	RA5/AN4/SS/HLVDIN/C2OUT	RA5: I/O pin of PORTA, PIN 5 AN4: Analog input 4 SS: SPI slave select input HLDVIN: High/Low-Voltage Detect input C2OUT: Comparator 2 output
8	RE0/AN5/CK1SPP	RE0: I/O pin of PORTE, PIN 0 AN5: Analog input 5 CK1SPP: SPP clock 1 output
9	RE1/AN6/CK2SPP	RE1: I/O pin of PORTE, PIN 1 AN6: Analog input 6 CK2SPP: SPP clock 2 output
10	RE2/AN7/OESPP	RE2: I/O pin of PORTE, PIN 2 AN6: Analog input 7 OESPP: SPP Enabled output
11	VDD	Positive Power Supply (+5V)
12	VSS	Ground
13	OSC1/CLKI	OSC1:Oscillator pin 1 CLKI: External clock source input
14	OSC2/CLKO/RA6	OSC2: Oscillator pin 2 CLKO: clock source output RA6: I/O pin of PORTA, PIN 6
15	RC0/T1OSO/T13CKI	RC0: I/O pin of PORTC, PIN 0 T1OSO:Timer1 oscillator output T13CKI: Timer1/Timer3 external clock input
16	RC1/T1OSI/CCP2/UOE	RC1: I/O pin of PORTC, PIN 1 T1OSI: Timer1 oscillator input CCP2:Capture 2 input/Compare 2 output/PWM2 output UOE: External USB transceiver OE output
17	RC2/CCP1/P1A	RC2: I/O pin of PORTC, PIN 2 CCP1: Capture 1 input/Compare 1 output/PWM1 output. P1A : Enhanced CCP1 PWM output, channel A
18	VUSB	VUSB: Internal USB 3.3V voltage regulator output
19	RD0/SPP0	RD0: I/O pin of PORTD, PIN 0 SPP0: Streaming Parallel Port data
20	RD1/SPP1	RD1: I/O pin of PORTD, PIN 1 SPP1: Streaming Parallel Port data
21	RD2/SPP2	RD2: I/O pin of PORTD, PIN 2 SPP2: Streaming Parallel Port data
22	RD3/SPP3	RD3: I/O pin of PORTD, PIN 3 SPP3: Streaming Parallel Port data
23	RC4/D-/VM	RC4: I/O pin of PORTC, PIN 4 D-: USB differential minus line (input/output) VM: External USB transceiver VM input
24	RC5/D+/VP	RC5: I/O pin of PORTC, PIN 5 D+: USB differential plus line (input/output). VP: External USB transceiver VP input
25	RC6/TX/CK	RC6: I/O pin of PORTC, PIN 6 TX: EUSART asynchronous transmit CK: EUSART synchronous clock (see RX/DT).
26	RC7/RX/DT/SDO	RC7: I/O pin of PORTC, PIN 7 RX: EUSART asynchronous receive DT: EUSART synchronous data (see TX/CK). SDO: SPI data out
27	RD4/SPP4	RD4: I/O pin of PORTD, PIN 4 SPP4: Streaming Parallel Port data
28	RD5/SPP5/P1B	RD5: I/O pin of PORTD, PIN 5 SPP5: Streaming Parallel Port data P1B: Enhanced CCP1 PWM output, channel B
29	RD6/SPP6/P1C	RD6: I/O pin of PORTD, PIN 6 SPP6: Streaming Parallel Port data P1C: Enhanced CCP1 PWM output, channel C
30	RD7/SPP7/P1D	RD7: I/O pin of PORTD, PIN 7 SPP7: Streaming Parallel Port data P1D: Enhanced CCP1 PWM output, channel D
31	VSS	Ground
32	VDD	Positive Power Supply (+5V)
33	RB0/AN12/INT0/FLT0/SDI/SDA	RB0: I/O pin of PORTB, PIN 0 AN12: Analog input 12 INT0: External interrupt 0 FLT0: Enhanced PWM Fault input (ECCP1 module) SDI: SPI data in SDA: I2C data I/O
34	RB1/AN10/INT1/SCK/SCL	RB1: I/O pin of PORTB, PIN 1 AN10: Analog input 10 INT1: External interrupt 1 SCK: Synchronous serial clock input/output for SPI mode SCL: Synchronous serial clock input/output for I2C mode
35	RB2/AN8/INT2/VMO	RB2: I/O pin of PORTB, PIN 2 AN8: Analog input 8 INT2: External interrupt 2 VMO: External USB transceiver VMO output
36	RB3/AN9/CCP2/VPO	RB3: I/O pin of PORTB, PIN 3 AN9: Analog input 9 CCP2: Capture 2 input/Compare 2 output/PWM2 output VPO: External USB transceiver VPO output
37	RB4/AN11/KBI0/CSSPP	RB4: I/O pin of PORTB, PIN 4 AN11: Analog input 11 KBI0: Interrupt-on-change pin CSSPP: SPP chip select control output
38	RB5/KBI1/PGM	RB5: I/O pin of PORTB, PIN 5 KBI1: Interrupt-on-change pin PGM: Low-Voltage ICSP Programming enable pin
39	RB6/KBI2/PGC	RB6: I/O pin of PORTB, PIN 6 KBI2: Interrupt-on-change pin PGC: In-Circuit Debugger and ICSP programming clock pin.
40	RB7/KBI3/PGD	RB7: I/O pin of PORTB, PIN 7 KBI3: Interrupt-on-change pin PGD: In-Circuit Debugger and ICSP programming data pin.

What is PIC18F4550?

PIC18F4550 is an 8-bit microcontroller featuring nano-Watt technology, improved flash, USB, and high performance. It's a 40-pin microcontroller featuring memory endurance, self-programmability, an extended instruction set, an upgraded CCP module, addressable USART, and a 10-bit ADC, among other things (Analog to digital converter).

PIC18F4550 CAD Model

Specifications

Microchip Technology PIC18F4550-I/P technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology PIC18F4550-I/P.

PIC18F4550-I/P Tech Specifications

Microchip Technology PIC18F4550-I/P technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology PIC18F4550-I/P.

Product Attribute	Attribute Value
Factory Lead Time	7 Weeks
Mount	Through Hole
Mounting Type	Through Hole
Package / Case	40-DIP (0.600, 15.24mm)
Number of Pins	40Pins
Weight	22.679619g
Data Converters	A/D 13x10b
Number of I/Os	35I/Os
Watchdog Timers	Yes
Operating Temperature	-40°C~85°C TA
Packaging	Tube
Series	PIC® 18F
Published	2004
JESD-609 Code	e3
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	Not Applicable
Number of Terminations	40Terminations
Terminal Finish	Matte Tin (Sn)
Max Power Dissipation	1W

Product Attribute	Attribute Value
Terminal Position	DUAL
Supply Voltage	5V
Frequency	48MHz
Base Part Number	PIC18F4550
Pin Count	40
Interface	I2C, SPI, UART, USART, USB
Memory Size	32kB
Oscillator Type	Internal
Nominal Supply Current	1.1mA
RAM Size	2K x 8
Voltage - Supply (Vcc/Vdd)	4.2V~5.5V
uPs/uCs/Peripheral ICs Type	MICROCONTROLLER
Number of Bits	8Bits
Core Processor	PIC
Peripherals	Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Program Memory Type	FLASH
Core Size	8-Bit
Program Memory Size	32KB 16K x 16
Connectivity	I2C, SPI, UART/USART, USB
Bit Size	8

Product Attribute	Attribute Value
Access Time	48 μs
Has ADC	YES
DMA Channels	NO
Data Bus Width	8b
Number of Timers/Counters	4Timers/Counters
Address Bus Width	8b
Density	256 kb
EEPROM Size	256 x 8
CPU Family	PIC
Number of A/D Converters	1A/D Converter
Number of ADC Channels	13ADC Channels
Number of PWM Channels	5PWM Channels
Height	4.953mm
Length	53.21mm
Width	14.732mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

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PIC18F4550 Features

Compact and ready to use design
Professional and Fully EMI/RFI Complaint PCB Layout Design for Noise Reduction
High Quality Two layer PTH PCB
Includes PIC18F4550 Microcontroller with built-in USB Peripheral
Board Supports PIC 16F877/18F 4520/4580 Microcontrollers
No separate programmer required (Built-in Boot loader)
No Separate power adapter is required (USB power source)
Screw terminal for External Power Supply (with Jumper Select Option)
External Power Supply range of 7V to 20V
Adaptor (any standard 9-12V power supply) option
RS-232 Interface (For direct connection to PC’s serial port)
Onboard Two-Line LCD Display (2x16)
Onboard I2C EEPROM (4K-AT24C04).
Onboard I2C RTC (DS 1307) with Crystal and Battery
Four multiplexed 7-Segment LED Display
Built-in Matrix keyboard (12 keys)
Built-in Pull-Up (4 Keys) Keyboard • Built-in IR Sensor Interface – TSOP 1738
Built-in 8 LED Interface to test I/O
On-Board External interrupt and Reset buttons
Built-in Pot interface to ADC
On-Board Temperature Sensor Interface (LM35)
On Board Buzzer Interface
On-Board PWM Output pin
On-Board ICD Connector for Debugging/Programming
On-Board ICSP Connector
On Board 20 MHz Crystal Oscillator
On-Board Power LED Indicator
All Port Pins available at IDC (2x5) Connector
Can be used as main board for developing applications
Power Supply Reverse Polarity Protection
On Board 1 Amp Voltage Regulator
Demo HEX codes included for testing of board features
Example codes included

PIC18F4550 Applications

Motor control systems
Peripheral Interface system
Hobbyist and Engineer general projects
Development board for learners
Temperature control systems
Analog signal measuring and manipulations
Embedded systems like coffee machine, vending machine

PIC18F4550 Equivalents

PIC18F4455, PIC18F2455, PIC18F2550

Where to Use PIC18F4550

PIC18F4550 is a simple PIC controller to program. Most applications are satisfied by the controller program memory. It can readily interface with various peripherals because of its 35 programmable input/output pins. It may be used on systems with no human intervention since it has a Watchdog timer that resets when there is an error. With the USB interface, you may easily communicate with the controller from any PC. With so many functions, the PIC18F4550 controller is even more appealing.

How to Use PIC18F4550

The PIC18F4550 microcontrollers are utilized as basic microcontrollers, not as digital integrated circuits. To begin using this microcontroller, we must first save the necessary software file to the FLASH memory controller. To run the code saved in the Flash memory, turn on the controller. As a result, the response will be produced. To learn how to use the PIC18F4550 microcontroller for processing and programming, follow the steps below.

PIC18F4550 Circuit

The functions that the PIC18F4550 Microcontroller will do are mentioned below.

Use the relative programming language to write the functions in the IDE application (for example for windows OS MPLAB IDE).
Write the functions in ‘C’ language for these IDE.
Compile the written appropriate program using IDE to eliminate errors.
After compiling the written program, the HEX file is generated by the IDE application.
Then select the programming device (i.e, PIC kit 3) to provide communication between the PIC18F4550 microcontroller and PC.
Select the related programming device to run the dumping software HEX file.
Select the desired program HEX file.
Burn the program of HEX file stored in the flash memory of PIC18F4550 microcontroller using this program.
The required peripherals are connected to the microcontroller and power on the systems by disconnecting the program.
When the power is on, the HEX code stored in the flash memory is executed by the controller and the given task is performed.

PIC18F4550 Manufacturer

Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.

Datasheet PDF

PIC18F4550-I/P Documents

Download datasheets and manufacturer documentation for PIC18F4550-I/P

Datasheets

PIC18F2455/2550/4455/4550 Datasheet

PIC18Fx455,x550 Family Errata

PIC18Fx455, x550 Revision A3 Errata

Timer1 Errata

PIC18F(2, 4)zzz Programming Specification

PCN Assembly/Origin

Qualification PDIP-28L/40 Revision 05/Sept/2013

PCN Packaging

Packing Changes 10/Oct/2016

ConflictMineralStatement

Microchip-company-68.pdf

Frequently Asked Questions

How many bits are PIC18F4550?

PIC18F4550-I/P - Microchip - 8 Bit MCU, Flash, PIC18 Family PIC18F45xx Series Microcontrollers.

What is code ROM capacity of PIC18F4550?

It has 32KB of Flash memory and can store up to 16,384 single-word instructions. Each register in the data memory has a 12-bit address, thus allowing up to 4096 bytes of data memory. The memory space in the PIC18 family is divided into as many as 16 banks that contain 256 bytes each.

How many ports are available for PIC18F4550?

40 pins of PIC18F4550 are divided into 5 ports. Out of which, 35 pins are Input-Output pins which can be configured for general Input or Output by setting registers associated with them.

What are the names of addressing modes in PIC18F4550?

The instruction set and architecture allow operations across all banks. The entire data memory may be accessed by direct, indirect, or indexed addressing modes. To ensure that commonly used registers (SFRs and select GPRs) can be accessed in a single cycle, PIC18 devices implement an Access Bank.

FAQ