| ??? 02/25/06 14:44 Modified: 02/25/06 16:41 Read: times |
#110788 - use modern devices Responding to: ???'s previous message |
simple use modern devices e.g. AT89C51ED2. Then you can download programs over the UART, like on your old board.
There are only some differences: - you need only a single chip and the RS-232 level converter (MAX202) instead a whole board. - the program was always present until you download another one. So it runs always after power on reset and no need to download it again after every power on cycle. - you have full 64kB Flash available for your application. - the program start on the reset vector 0x0000, no need to make tricks (redirect interrupt vectors). - the program can run twice as fast on the same crystal (6 crystal clocks per machine cycle). Peter |
| Topic | Author | Date |
| eeprom version of 8051 | 01/01/70 00:00 | |
| re: eeprom version of 8051 | 01/01/70 00:00 | |
| EPROM, EEPROM, and flash | 01/01/70 00:00 | |
| EPROM, EEPROM, and flash | 01/01/70 00:00 | |
89s8252 | 01/01/70 00:00 | |
| von Neumann-wired RAM | 01/01/70 00:00 | |
| Look up old Intel databook( ~198x) | 01/01/70 00:00 | |
| Look at the scehmatic | 01/01/70 00:00 | |
| use modern devices | 01/01/70 00:00 | |
| other modern devices | 01/01/70 00:00 |