| ??? 07/13/09 17:27 Read: times |
#167194 - Adapt 89c52 port 5v to 3v |
Hi, someone can help me?
i need to connect a 3.3v signal, to the INT0 port of the at89c52 (with an internal pullup to 5v on this port P3.2). How can i do this? I have to read signals and write others in the same wire. Thanks Diego |
| Topic | Author | Date |
| Adapt 89c52 port 5v to 3v | 01/01/70 00:00 | |
| Explain further | 01/01/70 00:00 | |
| ok | 01/01/70 00:00 | |
| Often two pins | 01/01/70 00:00 | |
What chips do you want to connect? | 01/01/70 00:00 |