| ??? 08/02/06 19:38 Read: times |
#121590 - It's the nomenclature that's the problem Responding to: ???'s previous message |
This port is bidirectional in most ways. Calling it quasi-bidirectional is the problem.
If you examine it from the way in which it is used, it's easier to understand how it works. If you use it as a bidirectional data port, e.g. as in interfacing external memory or I/O hardware, it is simply bidirectional. However, it differs from P1 and P2 in the way in which it drives its output, so that's what you have to consider when you use it simply as a port. RE |
| Topic | Author | Date |
| 80c51 Quasi-Bidirectional I/O ports | 01/01/70 00:00 | |
| Like this ? | 01/01/70 00:00 | |
| I agree the nomclature could be better | 01/01/70 00:00 | |
| Kai? | 01/01/70 00:00 | |
| Thanks! I recall it here:"80C52 port circuitry" | 01/01/70 00:00 | |
| 8051 I/O Port | 01/01/70 00:00 | |
Diplomacy | 01/01/70 00:00 | |
| It's the nomenclature that's the problem | 01/01/70 00:00 | |
| why not call a spade a spade | 01/01/70 00:00 | |
| the value of a newbie's question | 01/01/70 00:00 | |
| Spade a spade Jokes | 01/01/70 00:00 | |
| Unwarranted | 01/01/70 00:00 |