Another possibility is the Silicon Labs CP2101
(http://www.silabs.com/products/microcontroller/interface.asp). I'm
currently designing it into a product with a PIC. It's kinda like the FTD
part but does not require all the other parts around it (eeprom, etc.).

Harold


> Alan B. Pearce <piclist@mit.edu> wrote:
>
>> There are a number of 8051 based USB chips around, notably from
>> Texas Instruments. I am not sure what Cypress Semiconductor have
>> available, but Andrew warren may chime in and give advice there.
>
> Most of the world's mice have one of Cypress's USB microcontrollers
> inside; we have mouse and keyboard reference-designs available on our
> website, and maybe a joystick/gamepad, too.
>
> If we have a joystick reference design, it'd be written for one of
> our low-speed (1.5 Mbit/sec) parts that use a CPU called the M8;
> there are also full-speed (12-Mbit/sec) and high-speed (480 Mbit/sec)
> USB microcontrollers based on the 8051.
>
> The original poster seemed to want to learn PIC programming, though,
> and it would be dumb to throw a Cypress part AND a PIC into a
> joystick design that could really be handled by the Cypress part
> alone... Plus, this sounds like a one-off project, not something that
> will be built in any kind of volume... So I guess the PIC16C745 is
> the only choice, even though it isn't the part that most people would
> use in a real product.
>
> -Andy
>
> === Andrew Warren -- aiw@cypress.com
> === Principal Design Engineer
> === Cypress Semiconductor Corporation
> ===
> === Opinions expressed above do not
> === necessarily represent those of
> === Cypress Semiconductor Corporation
>
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