ezra
Junior Member level 2
When the I/O pin has no connect, which one is better for port output mode as following:
1. Quasi-Bidirectional
2. Push-Pull
3. Input Only (High Impedance)
4. Open Drain
I have read from "P89LPC9221 User's Manual" as following:
Quasi-bidirectional output mode,
'One of these pull-ups, called the 'very weak' pull-up, is turned on whenever the port latch for the pin contains a logic 1. This very weak pull-up sources a very small current that will pull the pin high if it is left floating'.
So if the I/O pin is no connect, is it better to choose 'quasi-bidirectional'?
Thanks & regards.
1. Quasi-Bidirectional
2. Push-Pull
3. Input Only (High Impedance)
4. Open Drain
I have read from "P89LPC9221 User's Manual" as following:
Quasi-bidirectional output mode,
'One of these pull-ups, called the 'very weak' pull-up, is turned on whenever the port latch for the pin contains a logic 1. This very weak pull-up sources a very small current that will pull the pin high if it is left floating'.
So if the I/O pin is no connect, is it better to choose 'quasi-bidirectional'?
Thanks & regards.