| ??? 07/22/02 17:26 Read: times |
#26132 - RE: Port 0 - Forcing external data mode? |
I experienced a similarproblem - when using extrnal RAM, P0 may need pullups despite what the datasheet says.
What I saw was that P0 pins during the data phase would stay low if the address previously on P0 was low. If the ADDRESS was high, then P0 data would be ok. |
| Topic | Author | Date |
| Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
| RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 | |
RE: Port 0 - Forcing external data mode? | 01/01/70 00:00 |