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« on: October 07, 2012, 11:47:25 pm » |
Hey guys, recently I just bought a FT232RL chip from RS. So, I would like to ask, how can I connect that to my AVR chip so that I can program my AVR chip just through the USB cable ?
Any schematic ?
Thank you
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Southern California
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« Reply #1 on: October 08, 2012, 12:36:00 am » |
What is RS? Did you buy a bare chip or a board?
Look at the Duemilanove schematic for an example of connecting them, it's not very complicated at all.
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« Reply #2 on: October 08, 2012, 01:44:30 am » |
Erm, is that we just connect CCC, gnd, txd and rxd to the avr chip?
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nr Bundaberg, Australia
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« Reply #3 on: October 08, 2012, 06:59:10 am » |
Here's the FTDI part of a schematic I used for a board a while back.
I'm not sure if it's the FT232RL but I think so.
______
Rob
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« Reply #4 on: October 08, 2012, 07:28:27 am » |
So the bottom left ( DTR, TXD and RXD is connected to the atmega ? connect to which pin of atmega ?
Thank you
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nr Bundaberg, Australia
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« Reply #5 on: October 08, 2012, 07:59:50 am » |
The FT Txd and Rxd connect to the Atmega Rxd and Txd. Look at the arrows on the chip to see the direction of the signals.
The left side of C5 goes to Reset. I would compare this against an Arduino schematic as well.
_____
Rob
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« Last Edit: October 08, 2012, 08:01:58 am by Graynomad »
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« Reply #6 on: October 08, 2012, 08:01:49 am » |
So, just this 3 pins is connected to the atmega ? Excluded the VCC and GND to chip
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« Reply #7 on: October 08, 2012, 08:09:20 am » |
The FT Txd and Rxd connect to the Atmega Rxd and Txd. Look at the arrows on the chip to see the direction of the signals.
The left side of C5 goes to Reset. I would compare this against an Arduino schematic as well.
_____
Rob
What is the thing in 500mA ?? Curious |
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Measurement changes behavior
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« Reply #8 on: October 08, 2012, 08:11:37 am » |
The FT Txd and Rxd connect to the Atmega Rxd and Txd. Look at the arrows on the chip to see the direction of the signals.
The left side of C5 goes to Reset. I would compare this against an Arduino schematic as well.
_____
Rob
What is the thing in 500mA ?? Curious That is a 500ma fuse to protect your PC in case you ever try to draw too much current from the USB +5vdc voltage source. Lefty |
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« Reply #9 on: October 08, 2012, 08:17:28 am » |
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