Frage zu FT 232-??

[TSE (Gast)]

Hallo,
es geht mal wieder um den "alten" chip FT232
Worin besteht der unterschied Zwischen der RL und der BQ Variante?

mfg
TSE

[holger (Gast)]

>Worin besteht der unterschied Zwischen der RL und der BQ Variante?

Man könnte glatt auf die Idee kommen
das gottverschissene Datenblatt zu lesen.
Aber wer macht das schon noch?

[M. W. (hobbyloet)]

Hallo,

das siehst Du sofort beim Vergleichen der Datenblätter.

[Oha (Gast)]

Eine total ueberzogene Forderung... weshalb kann das niemand vorkauen ?

[Anon Y. (avion23)]

Hallo,
mich hat das auch interessiert.
Ausschnitt aus der FAQ http://www.ftdichip.com/Products/FT232Rfaq.htm :
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Are the FT232R and FT245R pin compatible with the BM series devices?

No.  This is due to external components (EEPROM, clock source and series 
resistors) being absorbed into the FT232R and FT245R devices.  The 
FT232R and FT245R are available in 28-pin SSOP and 32-pin QFN packages 
while the BM series devices were available in 32-pin LQFP and 32-pin QFN 
packages.


Are the FT232R and FT245R replacing previous generations of FTDI's ICs?

Although the new FT232R and FT245R chips are recommended for new 
designs, there are currently no plans to stop producing the two previous 
generations of these devices FT232BM/FT23BL/FT245BM/FT245BL (second 
generation) and FT8U232AM/FT8U245AM (first generation).
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Und noch ein Abschnitt von der hp 
http://www.ftdichip.com/Products/FT232R.htm :
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The FT232R is the latest device to be added to FTDI’s range of USB UART 
interface Integrated Circuit Devices. The FT232R is a USB to serial UART 
interface with optional clock generator output, and the new FTDIChip-ID™ 
security dongle feature. In addition, asynchronous and synchronous bit 
bang interface modes are available. USB to serial designs using the 
FT232R have been further simplified by fully integrating the external 
EEPROM, clock circuit and USB resistors onto the device.

The FT232R adds two new functions compared with its predecessors, 
effectively making it a "3-in-1" chip for some application areas. The 
internally generated clock (6MHz, 12MHz, 24MHz, and 48MHz) can be 
brought out of the device and used to drive a microcontroller or 
external logic. A unique number (the FTDIChip-ID™) is burnt into the 
device during manufacture and is readable over USB, thus forming the 
basis of a security dongle which can be used to protect customer 
application software from being copied.
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Wegen dem integriertem EEPROM, Clock und USB Widerständen würde ich mich 
für die ft232R Version entscheiden.