| ??? 10/04/05 10:53 Read: times |
#101903 - Possible but uncomfortable Responding to: ???'s previous message |
Jeff said:
Well, I was wondering how is it possible for the 8051 to access the external sram and still use those lines as general IO pins. This is possible, but you would need some free Port1 or Port3 lines for strobing. So, it's better to keep everything memory mapped if once an external memory is addressed, then everything is accesible by Port0 and Port2 lines only. Kai |
| Topic | Author | Date |
| need clarification on xram/io pins ports | 01/01/70 00:00 | |
| In principle yes | 01/01/70 00:00 | |
| SBC | 01/01/70 00:00 | |
| You can, but is is far simpler to use | 01/01/70 00:00 | |
| I2C ? | 01/01/70 00:00 | |
| Need more info | 01/01/70 00:00 | |
| SBC | 01/01/70 00:00 | |
| Size critical | 01/01/70 00:00 | |
| size | 01/01/70 00:00 | |
| then go for an 8 port device such as the | 01/01/70 00:00 | |
| Huge RAM, why ? | 01/01/70 00:00 | |
| why? | 01/01/70 00:00 | |
| project | 01/01/70 00:00 | |
| Buy a devboard, they cost about $10. | 01/01/70 00:00 | |
if you build it... | 01/01/70 00:00 | |
| Possible but uncomfortable | 01/01/70 00:00 |