| ??? 02/06/01 13:00 Read: times |
#9028 - RE: Using a 128k SRAM for RAM and ROM |
It can be done with the schemes mentioned previously, the thing to look out for is that A16 does not (re)set till RD/PSEN time so you will need a faster (battery backed) RAM than if you had separate memory chips. I went through the same process, although not on a '51, and found out that the a chip with the speed required for OE and address being simultaneous was more expensive than 2 DS12.. chips with the lower speed requirement |
| Topic | Author | Date |
| Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
| RE: Using a 128k SRAM for RAM and ROM | 01/01/70 00:00 | |
memory map address decoding | 01/01/70 00:00 |