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FT232 USB chip, need clarification!

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eebhoi01

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Hi,

I am currently making a PCB design which I will have it manufactured. I know there are circuit available online, however I just want to make sure if my understanding is correct.

TCR6j.png

From this schematic, can I omit the RTS# & CTS# pin? Are these pins necessary to successfully transmit and receive data? All I need is to read and write data from and to the microcontroller.

Thank you.
 

Hi,

RTS and CTS are for hardware handshaking.
If you don't use handshaking, then you may omit them.

With high baud rates it may be difficult to receive all bytes without data loss.

Klaus
 

KlausST said:
Hi,

RTS and CTS are for hardware handshaking.
If you don't use handshaking, then you may omit them.

With high baud rates it may be difficult to receive all bytes without data loss.

Klaus
Click to expand...

Forgive me with my little knowledge, but can you please give me an overview on how handshake is implemented? is it just simple logic 1 and 0? or it's a bit complicated?
 

Hi,

Indeed the correct terminology for RTS, CTS is "flow control".

Please do a forum search and/or an internet search.

Klaus
 
Did you consider using other chips, like the Microchip alternatives, for instance: MCP2221, MCP2221A, MCP2200?

They come in extra-handy packages, including SMD and DIP, and offers UART pins + extra GPIO pins that you can use to, for example, apply external reset signal to mcu.

THere is also free, open source library for those chips: https://github.com/zkemble/libmcp2221
 
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