| ??? 11/26/08 07:36 Read: times |
#160307 - 8051s don't have any port direction settings. Responding to: ???'s previous message |
Sergei Sergeievich said:
I've heard that 8051s don't have any port direction settings. Neil Kurzman said:
(4) A standard 8051 has pseudo bi-directional ports. So yes it does not have any port direction settings. See FAQ: http://www.8052.com/faqs/120176 And, of course, the so-called "bible" for the 8051: Chapter 1 - 80C51 Family Architecture: http://www.nxp.com/acrobat_d...ARCH_1.pdf Chapter 2 - 80C51 Family Programmer's Guide and Instruction Set: http://www.nxp.com/acrobat_d...UIDE_1.pdf Chapter 3 - 80C51 Family Hardware Description: http://www.nxp.com/acrobat_d...WARE_1.pdf But there are many newer 8052 core CPUs that do. In which case, you must study the Datasheet for the specific device. |
| Topic | Author | Date |
| AT89S8253's port bits in C | 01/01/70 00:00 | |
| What Compiler? | 01/01/70 00:00 | |
| 8051s don't have any port direction settings. | 01/01/70 00:00 | |
| RE: I can't find it anywhere | 01/01/70 00:00 | |
| Using 8051 port as output. | 01/01/70 00:00 | |
| Such a #define lies to the user | 01/01/70 00:00 | |
| Point Taken | 01/01/70 00:00 | |
8051 cannot perform as a SOURCE | 01/01/70 00:00 |