| ??? 08/22/07 15:58 Modified: 08/22/07 16:01 Read: times |
#143523 - Let him do what he wants! Responding to: ???'s previous message |
Darek Rogowski said:
... Refreshing and decoding address in Dram take all the power of your C51. Unless he makes the choice to use an interrupt to refresh his DRAM, none of those tasks are handled by the MCU. What, exactly, do you believe the "C51" has to do in order to interface to a DRAM? If he has a DRAM SIMM, I see no reason why he shouldn't use it if he wants. I don't really see a SIMM as a convenient way to implement memory, but only for package reasons. However, if he has access to DIP-packaged parts, e.g. 64Kx4 parts (20-pin Dual In-line-Package) common in old PC's, or in printer memory, those are easily applied in do-it-yourself circuits. RE |
| Topic | Author | Date |
| how to interface simm 30 pin ram | 01/01/70 00:00 | |
| Interface to what? | 01/01/70 00:00 | |
| A DRAM is a DRAM ... more or less | 01/01/70 00:00 | |
| wow | 01/01/70 00:00 | |
| DRAMs are not the bugaboos as was once thought | 01/01/70 00:00 | |
| could be timed better ... | 01/01/70 00:00 | |
| schematic | 01/01/70 00:00 | |
| Link to Richards page | 01/01/70 00:00 | |
| I'm having a problem ... | 01/01/70 00:00 | |
| Has to have .phtml extension | 01/01/70 00:00 | |
| for some reason ... | 01/01/70 00:00 | |
| I suppose... | 01/01/70 00:00 | |
| Here where I live | 01/01/70 00:00 | |
| %$#@!! -- oops ... wrong thread | 01/01/70 00:00 | |
| Dram or maybe just SRAM | 01/01/70 00:00 | |
Let him do what he wants! | 01/01/70 00:00 |