PicoMite VGA

Author	Message
OA47 Guru Joined: 11/04/2012 Location: Australia Posts: 1050	Posted: 03:42am 27 Sep 2022       Am I interpreting this from the manual correctly?   Quote   The "OC" option on the SETPIN command makes the output pin open collector. This means that the output driver will pull the output low (to zero volts) when the output is set to a logic low but will go to a high impedance state when set to logic high. Note that the maximum voltage on a pin is 3.6V so open collector outputs cannot be used to drive higher voltage logic (i.e. 5V). I have used SetPin 5,DOUT,OC and Pin(5)=0 when I measure the pin with the meter I get roughly 0V and continuity to GND, but when I use Pin(5)=1, I read 3.3V on the meter and get continuity to 3.3V. I interpret the above quote as I should not get continuity to high. I want to toggle the pin either low or high impedance. OA47 Edited 2022-09-27 14:01 by OA47