| ??? 05/01/07 19:19 Read: times |
#138404 - Gah. Responding to: ???'s previous message |
Okay, I managed to briefly borrow a '550 emulator to try my code, and couldn't duplicate this behavior. However, I did notice that I was using 300-ohm resistors with my LEDs, and grounding the LEDs with the chip.
The big question, then, is whether I damaged my chips (samples, so no enormous problems there) by passing something like 16 or 17 mA when the data sheet rates them for 300 uA. More to the point, are the chips now totally unusable? Any offered knowledge on this would be gladly accepted. Many thanks, Bob Robertson. |
| Topic | Author | Date |
| Very stubborn UARTs... | 01/01/70 00:00 | |
| Keil gives error on your construct | 01/01/70 00:00 | |
| Re: error | 01/01/70 00:00 | |
| a guess | 01/01/70 00:00 | |
| Re: guess | 01/01/70 00:00 | |
| humm humm | 01/01/70 00:00 | |
| re: humming | 01/01/70 00:00 | |
| PS | 01/01/70 00:00 | |
| have you tried the simulator? | 01/01/70 00:00 | |
| Re: LED | 01/01/70 00:00 | |
| HUH??? | 01/01/70 00:00 | |
| again a HLL habit, isn't it... | 01/01/70 00:00 | |
| 2 possibilities | 01/01/70 00:00 | |
| Whoops. | 01/01/70 00:00 | |
| Dummy Interupt | 01/01/70 00:00 | |
| agreed, I do it like this | 01/01/70 00:00 | |
| Niiice | 01/01/70 00:00 | |
| you could solve a lot of problems if.... | 01/01/70 00:00 | |
| Thanks, but... | 01/01/70 00:00 | |
| Back to square one? | 01/01/70 00:00 | |
| blinkenlight | 01/01/70 00:00 | |
| Get a \'scope! | 01/01/70 00:00 | |
| More hints | 01/01/70 00:00 | |
| Re: hints | 01/01/70 00:00 | |
| I am sure it is published | 01/01/70 00:00 | |
| Gah. | 01/01/70 00:00 | |
| read the right spec | 01/01/70 00:00 | |
| specs | 01/01/70 00:00 | |
| Not a spec | 01/01/70 00:00 | |
| why not? | 01/01/70 00:00 | |
| Proviso | 01/01/70 00:00 | |
| just a small remark | 01/01/70 00:00 | |
| oh, yes, you can | 01/01/70 00:00 | |
| Huzzah! | 01/01/70 00:00 | |
| value of KISS | 01/01/70 00:00 | |
| I find that hard to beleive! | 01/01/70 00:00 | |
| Okay, so | 01/01/70 00:00 | |
| I thotoughly agree with you there! | 01/01/70 00:00 | |
| Further details | 01/01/70 00:00 | |
| You\'re not finished yet | 01/01/70 00:00 | |
| Lessons | 01/01/70 00:00 | |
| \"does have it all\" is of no good | 01/01/70 00:00 | |
Thanks for the update | 01/01/70 00:00 |