| ??? 02/14/05 01:00 Read: times |
#87303 - Buffer your pins... Responding to: ???'s previous message |
Why don't you try buffering your processor pins with a 74HCxx type CMOS logic part that has full push-pull outputs like some of those other less flexible microcontrollers have?
There are also some varieties of 8051 parts these days that have pins that can be programmed as push-pull outputs. You could try one of those parts. You would have to search a bit for a 5V part like that as the ones I know about tend to be 3.3V parts such as the SiLabs parts and the Philips LPC series parts. Michael Karas |
| Topic | Author | Date |
| three level output with resistors | 01/01/70 00:00 | |
| Buffer your pins... | 01/01/70 00:00 | |
| the advantage of '51 | 01/01/70 00:00 | |
| Try ATmega8515 | 01/01/70 00:00 | |
| or try a modern '51 | 01/01/70 00:00 | |
| ... and are not pin compatible... | 01/01/70 00:00 | |
| pin-compatible but reset is negative | 01/01/70 00:00 | |
| What is less pain? | 01/01/70 00:00 | |
| not any more | 01/01/70 00:00 | |
| where do you get your info? | 01/01/70 00:00 | |
| the horses mouth | 01/01/70 00:00 | |
| hmmmm | 01/01/70 00:00 | |
| pico gates, | 01/01/70 00:00 | |
| if just one unit or maybe | 01/01/70 00:00 | |
| 3 levels possible on 8051 without buffer | 01/01/70 00:00 | |
| the goalpost | 01/01/70 00:00 | |
| gotcha | 01/01/70 00:00 | |
The solution, but ... (almost off topic) | 01/01/70 00:00 | |
| A possible solution | 01/01/70 00:00 | |
| deja vu? | 01/01/70 00:00 | |
| Whoops! | 01/01/70 00:00 | |
| flat style | 01/01/70 00:00 | |
| aka | 01/01/70 00:00 | |
| R-2R | 01/01/70 00:00 | |
| R-2R? | 01/01/70 00:00 |