| ??? 05/01/10 11:44 Read: times |
#175580 - i CAN understand what is the problem...... Responding to: ???'s previous message |
i need some help regarding 89s8253....actually i wrote codes for 89s52..then i need to save ram contents so i copy the same code into 89s8253..and modyfy it to save the ram contents to its eeprom....its work fine but the only problem is that it slows down the system...LCD desplys the msgs very slowly...blink degits very slow...and toggle some port bits very slowly...i mean the whole system works very slow..some time it works normaly...but some time vry slow......i can,t understand what is the problem......
an EEPROM read/write is many times slower than a RAM read/write. you REALLY need to understand the difference between serial and parallel memory. also Per mention the fact that EEPROM will only last a finite number of writes. DO NOT just grab a 'solution' know what you do before you do it. Eriik |
| Topic | Author | Date |
| help regarding 89s8253 | 01/01/70 00:00 | |
| i can,t understand what is the problem | 01/01/70 00:00 | |
| Either write less data to EEPROM or switch to 8-bit F-RAM | 01/01/70 00:00 | |
| i CAN understand what is the problem...... | 01/01/70 00:00 | |
| EEPROM need not be too slow. | 01/01/70 00:00 | |
| 'too' is a very relative word | 01/01/70 00:00 | |
| I use to work with AT89S8253 | 01/01/70 00:00 | |
| do not forget | 01/01/70 00:00 | |
| Not quite true | 01/01/70 00:00 | |
| maybe not, but ... | 01/01/70 00:00 | |
Be reasonable. | 01/01/70 00:00 |