| ??? 05/07/08 08:24 Read: times |
#154521 - I think Christoph explained it? Responding to: ???'s previous message |
Shivaram Kumara Cunchala said:
What is the purpose of ports and buffer in controller, eg. ports in 8051 and SBUF. As already noted, the ports are what actually provide the physical connections to the outside world. SBUF is an internal register within the 8051 chip - it has no direct, physical connection to the outside world. For the specific case of SBUF, there are actually two completely separate and distinct registers: how different are they with respect to data storage and accessing data from outside. Entirely different - see above. For full details, of course, see 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 |
| Topic | Author | Date |
| buffer and port | 01/01/70 00:00 | |
| In what context? | 01/01/70 00:00 | |
| with respect to controller | 01/01/70 00:00 | |
| Do you mean \\\"pin\\\" and \\\"latch\\\" ? | 01/01/70 00:00 | |
| Still unclear | 01/01/70 00:00 | |
| question modified | 01/01/70 00:00 | |
| 1 more point added | 01/01/70 00:00 | |
| This is just another interview question, isn't it? | 01/01/70 00:00 | |
| If only you\'d read the documentation ... | 01/01/70 00:00 | |
Sotr of | 01/01/70 00:00 | |
| I think Christoph explained it? | 01/01/70 00:00 | |
| can i also justify like this | 01/01/70 00:00 | |
| No. | 01/01/70 00:00 |