18F4550

The best feature of the 18F4550 is the built in (full) USB interface.

The 18F4550 is similar to the 18F2550 in that its main outstanding feature is that it has a built in USB interface.  Again because it is an 18F series device it is optimized for C programming and has a 31 deep hardware stack and linear memory (no banked memory).

The PIC18F4550 has 16k of program memory and 2048 Bytes of RAM (linear RAM) - these are the same sizes as the 18F2550.

It is packaged in a 40 pin DIP and other packages are 44pin QFN and TQFP (for surface mount) and as usual it can be programmed in circuit using ICSP.  In common with other 18F series devices there is a built in 8 by 8 bit hardware multiplier (8x8).

In the same way as the 18F2550 you can enable the internal oscillaltor PLL to create a clock that is a multiple of the input frequncy for use as the system clock - the maximum clock speed is 48MHz and the instruction cycle is Fosc/4 so the maximum MIPS rate is12MIPS.

PIC18F4550

18F452 resources block diagram





Jump from 18F4550 resources to
Best Microcontroller Projects Home Page.


New! Comments

Have your say about what you just read! Leave me a comment in the box below.



Privacy Policy | Contact | About Me

Site Map | Terms of Use



Visit our Facebook Page:

   Click Here



Recent Articles

  1. INA219: A voltage and current sensing chip using I2C

    INA219: How to use the INA210 for maximum accuracy in current and power measurements

    Read more

  2. Arduino Oversampling: How to Get More ADC Bits with No Extra Hardware!

    Arduino oversampling is a technique to increase ADC resolution by reading more samples then decimating. It really does work!

    Read more

  3. How to use the ADS1115

    A tutorial on using the ADS1115 precision 16 bit ADC for low power use.

    Read more

  4. Arduino Analog Output...Easy analog output generation

    Arduino Analog Output: How to create the most accurate PWM analog ouput and how to create analog PWM sine waves.

    Read more

  5. DigitalWrite and equivalent fast macros. Speed up your code!

    Find out how digitalWrite() works...Now use 17x Faster macros!

    Read more

  6. The TCS230 Color Sensing Chip: How it works and how to use it.

    How to use the TCS230 (/TCS3200) Color detector chip and easily add it to any of your projects.

    Read more



Readers Comments

"I wanted to thank
you so so so much
for all the information
you have provided in
your site it's

SUPERB and FANTASTIC."

- Ranish Pottath

"This site really is
the best and my favorite.
I find here many useful
projects and tips."

- Milan

bursach<at>gmail.com<

"Awesome site,
very, very easy and nice
to navigate!"


- Matt
matt_tr<at>
wolf359.cjb.net


Learn Microcontrollers

"Interested in
Microcontrollers?"

Sign up for The
Free 7 day guide:

FREE GUIDE : CLICK HERE


"I am a newbie to PIC
and I wanted to say
 how great your
site has been for me."


- Dave

de_scott<at>bellsouth.net

"Your site is a great
and perfect work.
congratulations."


- Suresh

integratredinfosys<at>
yahoo.com

"I couldn't find the correct
words to define
yourweb site.

Very useful, uncovered,
honest and clear.

Thanks so much for
your time and works.
Regards."


- Anon

Back to Top