| ??? 10/30/10 23:50 Read: times |
#179397 - Try trick Responding to: ???'s previous message |
Hi Goran,
You could write some unique characters to specific RAM locations. When the CPU resets check the value of those bytes. If the values are what you wrote then the odds are that the CPU was reset by the user after power up. This method is not totally foolproof because there is a very small probability that these RAM bytes powered up with those values but if you use enough RAM bytes and unique values then the probability of false alarm would be very, very small. Cheers, Bert |
| Topic | Author | Date |
| P89V51 power up | 01/01/70 00:00 | |
| are you missing this? | 01/01/70 00:00 | |
| POF flag | 01/01/70 00:00 | |
| 'V' in the name is not revision... | 01/01/70 00:00 | |
| What is your VCC ramp? | 01/01/70 00:00 | |
| Power UP | 01/01/70 00:00 | |
| I've been harping on this for years ... | 01/01/70 00:00 | |
| Not nobody | 01/01/70 00:00 | |
| RC | 01/01/70 00:00 | |
| Have you considered the effect of Vcc rise/fall time? | 01/01/70 00:00 | |
| Vcc rise/fall time | 01/01/70 00:00 | |
Try trick | 01/01/70 00:00 |