| ??? 05/23/05 06:40 Read: times |
#93730 - Base protection provided Responding to: ???'s previous message |
Oleg:
You are correct. Since P1.0 was specified in the schematic I presented...a base protection resistor should be provided. If a port 0 pin (on a bog standard type 80c51 type part) had been specified then the series base resistor would not be needed. I modified the diagram so that it shows the resistor now. Michael Karas |
| 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 |