| ??? 08/06/05 11:57 Modified: 08/06/05 12:17 Read: times |
#98927 - here is whats go wrong Responding to: ???'s previous message |
Daer Kai,
(i want to know how exacctly the "Kai Klass" should be pronounced) Kai Klaas said:
What exactly happens to the reset performance? What is going wrong? some times it resests some times not . i mean a Kind of lock is formed so that i can even use !PBRST Also, does your PCB contain a solid ground plane? unfortunatly not Does the DS1232 have a decoupling cap directly at his supply terminals? yes it has. DS1232 is known to be critical referring to layout and decoupling measures! here is the layout  If oscillator signals cannot be used, maybe there's any other port line arround, which is toggling all the time and could feed the watchdog? that will require a software intervention. i dont want software involved. Thanks Kai Abhishek |
| Topic | Author | Date |
| Feeding the DS1232 Dog | 01/01/70 00:00 | |
| Why? | 01/01/70 00:00 | |
| Exixsting Board | 01/01/70 00:00 | |
| That makes mr REALLY curious, what reaso | 01/01/70 00:00 | |
| Exixsting Board | 01/01/70 00:00 | |
| no free ALE possible ! | 01/01/70 00:00 | |
| but it does not need to be if the purpos | 01/01/70 00:00 | |
| the reason what you dont beleave... | 01/01/70 00:00 | |
| but ALE is "just" ALE, not a GPIO, pleas | 01/01/70 00:00 | |
| my plans | 01/01/70 00:00 | |
| Use a buffer if using a XTAL | 01/01/70 00:00 | |
| wave forms | 01/01/70 00:00 | |
| Not trivial... | 01/01/70 00:00 | |
| Thanks Kai...... | 01/01/70 00:00 | |
| conclusion | 01/01/70 00:00 | |
| What exactly goes wrong? | 01/01/70 00:00 | |
| here is whats go wrong | 01/01/70 00:00 | |
| Ground bounce! | 01/01/70 00:00 | |
| Another board is only solution | 01/01/70 00:00 | |
| 3 or 4 Pin Supervisor is also a solution | 01/01/70 00:00 | |
| Pronouncing | 01/01/70 00:00 | |
| Prahlad and Kai | 01/01/70 00:00 | |
Communication Failure. | 01/01/70 00:00 |