| ??? 02/05/01 22:50 Read: times |
#9002 - RE: Using a 128k SRAM for RAM and ROM |
Hmmm, I'm not sure whether 8051 family can access all the way to 128K since it has only 16 bits Address lines.
If you still want to do that, maybe you place AD0 - AD15 to access the 64K Code which is much easier. And also use one of the Port to access the 64K Ram. Since you are in shortage of I/O lines, maybe you can use 74HC595 serial to parallel converter. By Using 3 I/O lines and some control, you can access the 64K of Ram. What do you think ? Any suggestions or comments ? It would be my pleasure to learn from you guys ! |
| 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 |