| ??? 09/11/02 14:13 Read: times |
#29002 - RE: 89C51RD2 and external \\\\\\\\\\\\\\\\\\\\\\\\ |
You haven't stated specifically what you are using to clock the display ( like the E line on HD44780 LCD's)? If you are using WR* does the pulse length satisfy the display requirements? On HD44780's E has to be high 450ns before going low. If you are running at 20Mhz on your 'RD2 then the WR* pulse is somewhere around 50ns, per the datasheet.
Hal |
| 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 |