| ??? 02/03/06 22:14 Read: times |
#109136 - A different approach Responding to: ???'s previous message |
First, you should be using an 8051 derivative.
Second, the logic in the HD44780 IC will work fine at 3v3 but the contrast will be horrible. Rather than make a 5v voltage supply, consider converting +3v3 to - one or two volts and apply that to the bottom end of the contrast control (resistors/pot/whatever). We do this and it works great. GB |
| Topic | Author | Date |
| 3 Volt LCD Module. | 01/01/70 00:00 | |
| pull-ups | 01/01/70 00:00 | |
| May be not required | 01/01/70 00:00 | |
| Are you asking for interface level? | 01/01/70 00:00 | |
| Power Supply Is 3 Volt. | 01/01/70 00:00 | |
| 5V generation from 3V | 01/01/70 00:00 | |
| 3V micro core LCD Solution | 01/01/70 00:00 | |
| I'll answer when the therad is moved | 01/01/70 00:00 | |
| Thanks Ijaz Ahmed. | 01/01/70 00:00 | |
| A different approach | 01/01/70 00:00 | |
Thanks Grant Beattie. | 01/01/70 00:00 |