| ??? 07/08/07 18:08 Read: times |
#141582 - Have the same problem... Responding to: ???'s previous message |
Hi Rick,
I use to work with AT89S8252. Although you did not provide too much info, I suppose that the corruption happens ramdomly. You have to asure that the write process can be completed before the power goes down. I sense the voltage before the 5V regulator and the uC write routine should start ONLY if the voltage is high enough to asure the process can be finished. If I am not wrong, it takes 1.5 mS per byte. Give us more details. I can post one possible circuit. Daniel |
| Topic | Author | Date |
| AT89S8252 EEPROM | 01/01/70 00:00 | |
| More Info. | 01/01/70 00:00 | |
| Have the same problem... | 01/01/70 00:00 | |
| AT89s8252 EEPROM | 01/01/70 00:00 | |
| Reset | 01/01/70 00:00 | |
| Some ideas | 01/01/70 00:00 | |
| AT89s8252 EEPROM | 01/01/70 00:00 | |
| EPROM reading | 01/01/70 00:00 | |
| AT89s8252 | 01/01/70 00:00 | |
| YES | 01/01/70 00:00 | |
| 7705 is rather old... | 01/01/70 00:00 | |
| AT89S8252 EEPROM | 01/01/70 00:00 | |
| you already did | 01/01/70 00:00 | |
the ol' trick is... | 01/01/70 00:00 |