soft low speed USB driver for PICs without harware USB

[Eugen_E]

16f2550 usb

Hello,

Do you know if a software USB implementation for low/mid range PICs (like PIC16F628, without hardware USB unit) exist?
I mean something like this
**broken link removed**, but for PIC - i think is not possbile, because PIC is slower than AVR, and the AVR implementation is on the limit - but it would be interesting if one exists.

Thanks.

 

[blueroomelectronics]

18f2550 low speed usb

Why not use a 16F2550? The 16F628A is not fast enough.

 

[Eugen_E]

Never heard of 16F2550, i searched but couldn't find it even on the microchip website.
The question was just a curiosity, to find out if i can connect smaller PICs to USB without a serial/ USB converter. Sometimes in high quantity i find small PICs cheaper than AVR and i thought maybe there is a software USB for PIC. But now it's clear 16F628 is too slow for this, I'll stick to AVR.

 

[FvM]

I'll guess, blueroomelectronics is referring to 18F2550 USB PIC. Actually, an 18F2450 (cheapest USB PIC) wouldn't cost much more than a 16F628, so one may wonder why you are trying a software USB?

 

[blueroomelectronics]

Opps my mistake, I meant the 18F2550. Thanks FVM.