which GPIO are default pull up in TMS320F28022

Andrew Dai

Other Parts Discussed in Thread: TMS320F28022

I remember reading somewhere that certain GPIO ports in the TMS320F28022 are default pull-up and some are not. Does anyone know where to find out?

Thanks!

over 15 years ago

0 Tim King61612 over 15 years ago

Expert 2355 points

See the following document (Sys Ctrl and Ints guide):

http://focus.ti.com/lit/ug/sprufn3c/sprufn3c.pdf

Look at page 95. This covers the bit definitions for the GPAPUD/GPBPUD pull-up disable registers. Have a look at their default states after reset (it says either R/W-0 which is 0 on reset or R/W-1 which is 1 on reset). Remember these are disable registers so R/W-0 means that the pull up is enabled on reset.

Tim

C2000™︎ microcontrollers

C2000 microcontrollers forum

which GPIO are default pull up in TMS320F28022