| ??? 09/15/05 12:53 Read: times |
#101121 - Have a look at an 8 port chip such as th Responding to: ???'s previous message |
Have a look at an 8 port '51 such as the SILabs F122, I have 2Mbyte parallel flash ($2.87) attached to one for data storage.
It is next to impossible to handsle a large flash and RAM and... in a standard 4 port chip (well, really a 1 port chip P0-P2 are memory, p3 is usually used for the alternative purposes except for a pin or two. Since you are going to have a flash, stay away from banking. It slows you down more than you want. You need a couple of functions ReadFlash and WriteFlash to take care of the extended addressing. In addition, writing flash is not just xxx= yyy (c) or movx (asm) so you will need the write routine anyhow. Re flash I strongly recommend SST, the erase time is in milliseconds where (most) others require 20+ seconds for a chip erase. Erik |
| Topic | Author | Date |
| 8052 | 01/01/70 00:00 | |
| Use Serial Flash | 01/01/70 00:00 | |
| re | 01/01/70 00:00 | |
| You need to use from ADC or Codec! | 01/01/70 00:00 | |
| reply | 01/01/70 00:00 | |
| Ok! | 01/01/70 00:00 | |
| Banking? | 01/01/70 00:00 | |
| Do your homework! | 01/01/70 00:00 | |
| ADUC824 | 01/01/70 00:00 | |
| reply | 01/01/70 00:00 | |
| wrong question! | 01/01/70 00:00 | |
| re..ANDY NAIL | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| Have a look at an 8 port chip such as th | 01/01/70 00:00 | |
| Excellent solution | 01/01/70 00:00 | |
| Depends | 01/01/70 00:00 | |
| Voice recording | 01/01/70 00:00 | |
| Not really | 01/01/70 00:00 | |
| I have done recording also | 01/01/70 00:00 | |
| Alternative voice | 01/01/70 00:00 | |
Sorry - the IC is the ISD 25XXX | 01/01/70 00:00 |