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dazza
Guest
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| Another USB <> UART bridge chip |
 Posted: Sun Oct 24, 2004 4:39 am |
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Hi,
Check out the CP2101 from Silicon Laboratories.
It is cheaper than the FTDI chip and requires no external components.
Regards,
Darren |
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Guest
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| Re: Another USB <> UART bridge chip |
| Posted: Sun Oct 24, 2004 3:03 pm |
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| dazza wrote: | Hi,
Check out the CP2101 from Silicon Laboratories.
It is cheaper than the FTDI chip and requires no external components.
Regards,
Darren |
As compared to the FTDI 232 usb to rs232 is seems better. The CP2101 is limited to 921,600 Baud or 92,160 BYTES per second.
However the FTDI 245 will do 1Mega BYTE per second....
For your info... Silicon Labs is the old Cygnal. They had/have so many good product, but fail to market them.
Example: the 8 bit MCU is a speed demon, but needs the $2000.- Kiel compiler... ! Sure they give you the free-bee compiler but it sucks. If Cygnal ever get to undertsand the market they will be a force to reckon with. At the moment they are living with their heads in the clouds or somewhere else... |
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Dazzle
Guest
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| SilLABS |
| Posted: Mon Oct 25, 2004 2:30 pm |
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Hi,
I don't claim to know Silicon Labs, but I concur re. the marketing in this case.
I was going to go with the FTDI chip but at the last minute thought I'd have a look for an alternative. It was only by luck and a lot of squinting at my pc screen did I see the CP chip.
I shall be comparing the both, but on the face of it the CP chip seems like a much more economical choice.
Vbr,
Darren |
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kypec
Joined: 20 Sep 2003
Posts: 54
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| concerned about VID & PID |
| Posted: Tue Oct 26, 2004 1:43 am |
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Hi Darren,
when I saw your notice about CP2101 I immediately
downloaded the datasheet for checking it out.
It really impressed me at the first sight -> I think
I'll give it a try as well instead of FT232BM which I thought was the
only USB solution simple and affordable enough at the same time.
The only thing which I'm afraid of are the VID & PID numbers.
I know I have the ability to change them via custom EEPROM
programming but how will then be Windows drivers installed?
If only Silicon Labs could provide users with unique PID like FTDI do...
I'd better ask them directly about this issue when I'll have my device
running properly with CP2101 
good luck,
kypec |
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Jeff King
Joined: 20 Oct 2003
Posts: 43
Location: Hillsdale, Michigan USA
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| Re: Another USB <> UART bridge chip |
| Posted: Tue Oct 26, 2004 3:58 pm |
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| dazza wrote: | Hi,
Check out the CP2101 from Silicon Laboratories.
It is cheaper than the FTDI chip and requires no external components.
Regards,
Darren |
Here is what I got for pricing:
Qty 10K pricing:
Silicon Labs, CP2101. $2.68 ea (built in Xtal)
FT232BM $2.55 each
Ecliptek crystal $0.081
Where are you finding the cheaper prices on the CP2100 part? |
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Dazza
Guest
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| prices |
| Posted: Tue Oct 26, 2004 6:07 pm |
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Hi,
UK prices.
I do not have the details to hand, I will post them tomorrow.
The CP chip turns out about a third cheaper! - very significant.
(Note the CP chip also has on board EEprom)
Vbr,
Darren |
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