| ??? 02/10/03 16:10 Read: times |
#38710 - RE: 89c51 port default value problem Responding to: ???'s previous message |
"I'm not sure what CLR 90h does since the bit addressable area ranges from 00h to 7Fh."
CLR 90h is the same as CLR P1.0. Bit 80h is P0.0, bit 81h is P0.1, etc. Bit 90h is P1.0, bit 91h is P1.1, etc. Bits above 7Fh refer to individual bits of SFRs and all SFRs that are evenly divisible by 8 can be cleared and set by the SETB and CLR bit instructions. Regards, Craig Steiner |
| Topic | Author | Date |
| 89c51 port default value problem | 01/01/70 00:00 | |
| RE: 89c51 port default value problem | 01/01/70 00:00 | |
| RE: 89c51 port default value problem | 01/01/70 00:00 | |
| RE: 89c51 port default value problem | 01/01/70 00:00 | |
| RE: 89c51 port problem / A Picture | 01/01/70 00:00 | |
| RE: 89c51 port default value problem | 01/01/70 00:00 | |
| RE: 89c51 port default value problem | 01/01/70 00:00 | |
RE: 89c51 port default value problem | 01/01/70 00:00 |