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I'm using PCF8575 with LM3S6965 via bitbanging I2C. I read the first byte very accurately but having a problem reading the second one. I always get 0xff for the second. What I'm actually doing is that I first write to the port a random value like 0x7988 then the reading interrupt is activated to...
I don't think it's s a problem of the level shifter because i've already checked the output pulse and it's almost the exact inversion.
Yes i did, and it's good
Meaning that the pulse width change doesn't affect the output, it settles on the VDSsat whatever what.
The comment below said it...
Hello everybody!
I'm trying to design a boost power supply stepping up from 9v to 105v
**broken link removed**
The first stage is simply a level shifter. I tried to apply the equations in TI application note here **broken link removed** but it didn't work. The change of the pulse width...
Hello Everyone,
I'm on a project that uses PCF8574A for I/O Expansion.
The controller is LM3S6918, the interface is BitBanging I2C.
I've succeeded in the write part, stuck in the read part.
will paste the code used for the read..
int main(void)
{
IOX_Init(0)...
Dear all,
I'm working on some project which requires 100v converted from 9v, so i called the basic idea of Boost converter.
The circuit is quiet simple, i use IRF540NS switched from PWM (Pulse Value 3.3v, Pulse Width 278us, Period 300us)
**broken link removed**
I used TI application note...
Dear All,
I need to plot a layout for the antenna of this module RN-171. There are many ways to do this, i want to try the PCB Trace, the datasheet says it should be 4 layers PCB so that i can do this! While my PCB is just 2, i came here to ask if there any other considerations haven't been...
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