2022-11-30 11:26 PM
Hello,
I have one master and multiple slave devices for I2C Connections.
So, my Query is that;
I am connecting series resistors after the Pull up Resistors on SDA SCL lines,
Now the query is that should I connect those Series Resistors at only Master side or on every slave side?
for your reference I have attached Image.
2022-11-30 11:52 PM
What's the purpose of those series resistors?
2022-12-01 12:16 AM
to overcome I2C glitches, noise and any other issues.
2022-12-01 04:16 AM
I would avoid putting passives on the bus and find a sw workaround. Here it is the same when someone ask to RC low pass filter a PWM to get an analog value, where to place each passive component....
Each chip has around 5 pF pad capacitance.
Serial resistor will raise the ground voltage to filter noise (injected where?), or for ESD.
Etc....