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New USB chip PIC18F4550


uclaros
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I found out today that microchip has a new PIC for USB.

PIC18F4550 is even usb2 compliant, is in a pdip 40pin package easy to solder, and comes in free samples from microchip!

I don't know if it could be used for midibox to usb or  what the effort will be , but I think that it is worth a look by T.K. or those who are into programming PICs.

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The introduction for this chip exists since more than one year, but there are no devices available yet.

Please keep also in mind that it would mean a lot of effort for myself to create a new USB project (which I wouldn't really need) - maybe 3 months or more - and a lot of extra support effort to help you with debugging the new  hardware - just to give you an impression. So, I think that somebody else has to implement an alternative USB solution.

Best Regards, Thorsten.

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Thanks for the reply Thorsten!

I am aware of the effort you spend on your project and I surely don't want to e a pain in the ass!

The only reason I asked about this chip is the simplicity of the circuits (and the already built codes) that microchip offers for USB keyboard, mouse and joystick!

So I thought maybe it could have been that easy.

Thanks for all the amazing project!

uclaros

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Hi uclaros,

The only reason I asked about this chip is the simplicity of the circuits (and the already built codes) that microchip offers for USB keyboard, mouse and joystick!

So I thought maybe it could have been that easy.

but these are PIC*C* types and no "F" types, means: microcontrollers with OTP (One Time Programmable) memory. In other words: you can program the memory once and then never again - makes development difficult, no? ;-)

Best Regards, Thorsten.

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  • 11 months later...

Hey René,

Correct me if I'm wrong, but is the 18F4550 the same as 18F452?

I'm meaning, with the 452 you need a midi port, and for the 4550 an usb port?

So if you use the 4550, you don't need midiports anymore?

As Thorsten has written in this message: http://69.56.171.55/~midibox/forum/index.php?topic=4138.msg28466#msg28466 (German!) the 18F4550 is verry buggy at the moment. So mios will not run on it.

And there is another Problem: The USB memory overlaps the MIOS memory :(

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