| ??? 09/09/02 17:55 Read: times |
#28916 - RE: 89C51RD2 and external \'memory\' |
've checked the datasheet and came up with this info.
- When accessing external memory P0 and P2 have internal pullups. So none are required external. From my experience, you do need pullups on P0 when using external ram, despite what the datasheet says. I think they might mean when using external code. But, does anything work ? |
| Topic | Author | Date |
| 89C51RD2 and external \'memory\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \'memory\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \'memory\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \\\\\\\\\\\\\\\'memory\\ | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \'memory\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \\\'memory\\\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \\\\\\\\\\\\\\\'memory\\ | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \'memory\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \'memory\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \\\'memory\\\' | 01/01/70 00:00 | |
| RE: 89C51RD2 and external \\\\\\\\\\\\\\\\\\\\\\\\ | 01/01/70 00:00 | |
| RE: 89C51RD2 and LCD Drive (Hal Albach) | 01/01/70 00:00 | |
| Philips or Atmel ??? | 01/01/70 00:00 | |
| RE: 89C51RD2 and LCD Drive (Alan Chen) | 01/01/70 00:00 | |
| RE: 89C51RD2 and .. 8k | 01/01/70 00:00 | |
| RE: 89C51RD2 and .. 8k | 01/01/70 00:00 | |
RE: 89C51RD2 and .. 8k | 01/01/70 00:00 |