| ??? 02/19/04 05:35 Read: times |
#65074 - RE: 8051/8255 interfacing Responding to: ???'s previous message |
If you don't have a fairly strong pullup, 2v8 is a logic 'high'. The 8255A does not have a strong pullup on most of the ports. |
| Topic | Author | Date |
| 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: Altera PLD example (image) | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| more | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| RE: 8051/8255 interfacing | 01/01/70 00:00 | |
| Direct LCD to 8051 !! | 01/01/70 00:00 | |
| RE: Direct LCD to 8051 !! | 01/01/70 00:00 | |
| RE: Direct LCD to 8051 !! | 01/01/70 00:00 | |
RE: Direct LCD to 8051 !! | 01/01/70 00:00 |