| ??? 09/11/02 08:58 Read: times |
#28989 - RE: 89C51RD2 and external \'memory\' |
When driving an LCD from port 0, with the active high E pin of the LCD conected to P0.3, I found that a read from internal XRAM (EXTRAM bit = 0)actually set the port pin P0.3 high, thus corrupting the LCD display. I rewired the E pin to P1.2 - this worked fine, but it seems there is a bug somwhere in the micro |
| 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 |