Quote:
Originally Posted by squiggles
Actually this is not guaranteed. The ATmega8 output when low can be as high as 0.7V.
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Hey Squiggles!
On pg. 265 of the ATMega8 datasheet, it has a graph called:
Figure 149. I/O Pin Sink Current vs. Output Voltage (VCC = 5V)
The current will be 5v / 10K for the pulldown, plus 5v / 1K for the PWM series resistor. That makes 5.5mA, which makes for approximately 0.2v. 0.2v + 0.7v is safely under for the HC74 family to be considered low. I see what you mean, though.
TheSGC: I need something that will run AVR Studio from Atmel, and that can function as a hyperterminal. I need to be able to get AVR Studio onto the computer, and I have one of those little plug things that go into the usb port. The older one I have doesn't have the right drivers to be able to read it. I think that's it.