| ??? 04/09/05 06:29 Read: times |
#91281 - at89s8252 PULL UP REQD? |
I've connected 10k pullup resistor to port 0
I'm getting 3.3 volts for logic 1(high) and 2.5 volts for logic 0(LOW) at ports 0 and port2 (BOTH PORTS on RUGHT SIDE OF CHIP) Whereas port 1 and port 3 are giving 5 volts and 0 volts for logic 1 and 0 respectively. Is it a case of wroong pull up used....Does AT AT89S8252 require pullup resisteance.....Plz guide me....... urgent |
| Topic | Author | Date |
| at89s8252 PULL UP REQD? | 01/01/70 00:00 | |
| Pull-ups | 01/01/70 00:00 | |
| another thing | 01/01/70 00:00 | |
| uh-oh | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
not 10k ?? | 01/01/70 00:00 |