| ??? 05/24/06 18:33 Read: times |
#117047 - c8051f310R Responding to: ???'s previous message |
Erik Malund said:
Now, since the weak pullup is a global bit (at least for the SILabs chips I use) do not worry about having weak pullups on your inputs. Any logic chip (such as 74HC) will have many, many times the drive it takes to overcome the WEAK pullup.
Are you talking about analog inputs? If so give exact chip type. I am using C8051F310R and I am using only 1 analog input(P0.7). The rest are digital inputs. I will configure all the inputs as open-drain and all outputs as push-pull. I will "NOT" check the box for "disable weak pull-up" in my project. |
| Topic | Author | Date |
| configuring quasi-bidirectional | 01/01/70 00:00 | |
| Disable Weak Pull-Up | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| and see the chip go POOF | 01/01/70 00:00 | |
| configuration got the usual treatment | 01/01/70 00:00 | |
| confusion | 01/01/70 00:00 | |
| neither | 01/01/70 00:00 | |
| So it is Enable Weak pull-up and open dr | 01/01/70 00:00 | |
| Configuration | 01/01/70 00:00 | |
| you got it ! | 01/01/70 00:00 | |
| c8051f310R | 01/01/70 00:00 | |
| SILabs analog inouts | 01/01/70 00:00 | |
| disable weak pull-up for P0.7 only??? | 01/01/70 00:00 | |
| simply specify it analog | 01/01/70 00:00 | |
Specify as analog and P0SKIP | 01/01/70 00:00 |