| ??? 12/13/06 09:14 Modified: 12/13/06 09:15 Read: times |
#129385 - EEPROM needs time to write Responding to: ???'s previous message |
EEPROMs (24Cxx) need time to accomplish a write - in the order of milliseconds (-> substantially more than 3 NOPs you have now). There are two ways, either wait some fixed time or follow a procedure in the EEPROM datasheet to find out exactly when the write cycle ends (the latter is faster but more complicated).
Have you seen the Atmel's appnote I mentioned above? There are I2C memories for which the write is instantaneous (either those from Ramtron dubbed FRAM, or there are some small RAMs e.g. from Philips/NXP (the latter are volatile of course)), but you'd need to use the standard 24Cxxx anyway, don't you. JW |
| Topic | Author | Date |
| I2C Read Operation | 01/01/70 00:00 | |
| Photo | 01/01/70 00:00 | |
| get the real stuff | 01/01/70 00:00 | |
| I agree and, in addition | 01/01/70 00:00 | |
| Thanks for all Replies, But... | 01/01/70 00:00 | |
| By the way... | 01/01/70 00:00 | |
| DELAY time is required ,I guess | 01/01/70 00:00 | |
| EEPROM needs time to write | 01/01/70 00:00 | |
| what is it you do not understand | 01/01/70 00:00 | |
| what is it you do not understand | 01/01/70 00:00 | |
| I will not | 01/01/70 00:00 | |
True | 01/01/70 00:00 | |
| simulator | 01/01/70 00:00 | |
| What addressing you are using | 01/01/70 00:00 |