Most usb-to-serial module commonly used in the market use the following chips :CP2102/CH340G/PL-2303/FT232R. After testing, we recommend FT232R chip
The comparison is as follows:
|
Module
|
baud rate |
Platform driver Compatibility
|
Note |
|
|---|---|---|---|---|
| CP2102 |
300, 600, 1200, 1800, 2400, 4000, 4800, 7200, 9600, 14400, 16000, 19200, 28800, 38400, 51200, 56000, 57600, 64000, 76800, 115200, 128000, 153600, 230400, 250000, 256000, 460800, 500000, 576000, 921600 |
Virtual COM Port Device Drivers - Works with Existing COM Port PC Applications - Royalty-Free Distribution License - Windows Vista/XP/Server 2003/2000/98SE - Mac OS-X / OS-9 - Linux USBXpressTM Direct Driver Support - Royalty-Free Distribution License - Windows Vista/XP/Server 2003/2000 - Windows CE 5.0 and 4.2
The actually measured Manifold 2-G/2-C native firmware supports the serial port module of this chip. |
OSDK baud rate is supported with 38400/115200/230400/921600 But not support 1000000 baud rate
|
|
| CH340G |
50, 75, 100, 110, 134.5, 150, 300, 600, 900, 1200, 1800, 2400, 3600, 4800, 9600, 14400, 19200, 28800, 33600, 38400, 56000, 57600, 76800, 115200, 128000, 153600, 230400, 460800, 921600, 1500000, 2000000 |
The actually measured Manifold 2-G native firmware does not support the serial port module of this chip. |
OSDK baud rate is supported with 38400/115200/230400/921600 But not support 1000000 baud rate
Manifold 2-G native firmware is not supported. |
|
| FT232R |
The FT232R supports all standard baud rates and non-standard baud rates from 300 Baud up to 3 Megabaud. Achievable non-standard baud rates are calculated as follows - Baud Rate = 3000000 / (n + x) where n can be any integer between 2 and 16,384 ( = 2 14 ) and x can be a sub-integer of the value 0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, or 0.875. |
Royalty-Free VIRTUAL COM PORT (VCP) DRIVERS for... •Windows 98, 98SE, ME, 2000, Server 2003, XP. •Windows Vista / Longhorn* •Windows XP 64-bit.* •Windows XP Embedded. •Windows CE.NET 4.2 & 5.0 •MAC OS 8 / 9, OS-X •Linux 2.4 and greater Royalty-Free D2XX Direct Drivers (USB Drivers + DLL S/W Interface) •Windows 98, 98SE, ME, 2000, Server 2003, XP. •Windows Vista / Longhorn* •Windows XP 64-bit.* •Windows XP Embedded. •Windows CE.NET 4.2 & 5.0 •Linux 2.4 and greater
The actually measured Manifold 2-G/2-C native firmware supports the serial port module of this chip. |
OSDK serial port all baud rate are supported. |
Conclusion:
Although CP2102 is compatible with most platforms, it does not support 1M baud rate. It is suitable for OSDK applications where the baud rate is not set to 1M.
While CH340G is more stable than CP2102, it is not compatible with Manifold 2-G native firmware and does not support 1M baud rate. This works if the OSDK is not set at 1M baud rate and the OSDK device is not the Manifold 2-G application scenario.
FT232R platform compatibility and baud rate support are better, the strongest stability, but the price is a little more expensive. The USB to serial port module of FT232R is recommended.
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