CC2640: the pull resistance value of CC2640

JiCheng_ZhangXiang

Part Number: CC2640

hi, TI, could you help me where to find the pull resistance definition of the cc2640 gpio. I don't find in datasheet and reference manual.

however, I found there's a description in reference manual mentioned that the value defined in datasheet. I'm puzzled, where defined?

over 1 year ago

0 Ryan Brown1 over 1 year ago

TI__Guru**** 202096 points

Hi JiCheng,

The pull strength is listed in the datasheet as a current capability due to how the pulls are designed. Thus the resistance changes with voltage supplied but you can calculate equivalent resistance values from the current numbers using Ohm's Law. https://www.ti.com/lit/ds/symlink/cc2640.pdf

Regards,
Ryan

0 JiCheng_ZhangXiang over 1 year ago in reply to Ryan Brown1

Intellectual 255 points

Hello, Ryan. Thanks your reply. I've noticed the current value descripted in charpter "8.19 DC characteristics" in the datasheet of CC2640R2F. But as the picture below, I can't calculate the pull resistance to get the consistent value. can you tell me why?