PIC and USB data transfer

[nick703]

hello friends i have choose pic micro controller for my small application like Run 3 motor which controlled By RELAY . so i have a question i have a less pin like 3 motor controlled by 3 pin of pic and 2 pin for USB communication . so is that possible to 8 pin or 10 pin pic MCU ? so which MCU perform this task . So which pic at lest 8 to 10 pin micro controller doing this task please suggest me bro!!!

 

[jayanth.devarayanadurga]

There is no 8 pin micro which has USB option. Use PIC18F2550.

 

[bigdogguru]

I believe the PICs with fewest number of I/O pins and USB hardware module are as follows:

PIC16F1454 \
PIC16F1455 12
PIC16F1613 /

PIC18F13K50 -15
PIC18F14K50 -15



BigDog

 

[nick703]

ok then what about ATMEL series ?


thanks big dogguru is that any project available to do with this pic to usb communication ? i have mplab and c18 complier or hitec c compiler.

 

[bigdogguru]

Last time I checked the ATMEL ATMega series devices which offer a USB hardware module are all 32, 44, or 64 pin TQFP or VQFN packages.


You may possible be able to use a low pin count DIP package microcontroller, like the ATTiny or PIC12F/PIC16F series combined with a softUSB library like V-USB for ATMEL or 16FUSB for PIC:

V-USB Virtual USB Port for AVR

16FUSB - software implementation of the USB low-speed for PIC16F628/628A


BigDog

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is that any project available to do with this pic to usb communication ? i have mplab and c18 complier or hitec c compiler.

All of the following are available in a 14-pin DIP and compatible with MPLAB IDE and XC8 or possibly the latest version of the HiTech PICC Compiler:

PIC16F1454
PIC16F1455
PIC16F1613

They are only four more pins than the 10-pin packages you have requested.

Of course the following are compatible with MPLAB and the C18 Compiler and are available in a 20-pin DIP:

PIC18F13K50
PIC18F14K50


BigDog

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Another possible option would be to utilize a USB to UART Bridge Chip like FTDI FT232R or Silabs CP210X series.

A PIC12F series low pin count device with a UART in combination with a CP210X would provide USB connectivity.

There are prefab USB to UART cables available which contain a device similar to the FT232R or CP210X which are fairly inexpensive.


BigDog