| ??? 05/23/05 02:08 Modified: 05/23/05 02:19 Read: times |
#93722 - AT89C2051 output problem |
Dear all,
I make the board as follow the schematic as below, and check carefully the parts ok. p1.0 direct connect with B of 2SC1815, E of 2SC1815 to GND throught the 330ohm resistor C of 2SC1815 connect with pin 2 of MOC3020 pin 1 of MOC3020 connect with +5V pin 4,6 of MOC3020 control the BTA16 triac and connect to load .... all pin of port 1 are same But can't control P1.4. Can I control all output at one time ? because when I write : ... mov P1,#00h jmp $ but all output are "1 level, not 0". please tell me what's wrong. thanks, gialinh |
| Topic | Author | Date |
| AT89C2051 output problem | 01/01/70 00:00 | |
| There is something wrong | 01/01/70 00:00 | |
| base protection | 01/01/70 00:00 | |
| Base protection provided | 01/01/70 00:00 | |
| re | 01/01/70 00:00 | |
| Like this... | 01/01/70 00:00 | |
| GIF better than JPEG? | 01/01/70 00:00 | |
| ...or PNG8 | 01/01/70 00:00 | |
| '2051 P0 and P1 | 01/01/70 00:00 | |
| make that P1.0 and P1.1 re: Pullups | 01/01/70 00:00 | |
| the Batronix ProStudio 5.28 | 01/01/70 00:00 | |
| Batronix software | 01/01/70 00:00 | |
| IS THIS LEGAL????? | 01/01/70 00:00 | |
| also Geert.. | 01/01/70 00:00 | |
| re:batronix | 01/01/70 00:00 | |
| it is legal | 01/01/70 00:00 | |
| I'm not so sure... | 01/01/70 00:00 | |
| who knows, but to find out | 01/01/70 00:00 | |
| THAT can in no way be legal | 01/01/70 00:00 | |
| Batronix Prog Studio is good but.... | 01/01/70 00:00 | |
AT89C2051 I/O drive | 01/01/70 00:00 |