| ??? 02/21/05 15:02 Read: times |
#88067 - OPEN DRAIN Responding to: ???'s previous message |
I just learnt online regard the open drain...
1)For that case, does it mean i have to connect the keypad pin to Port O and connect the pin as well to a resistor which lead to VCC?... 2)So, what is the suitable resistor value for that? 10K? 3)Does it mean that all the keypad pin have to be connected like that? or just the column contol pin? |
| Topic | Author | Date |
| How to use this program? | 01/01/70 00:00 | |
| like this | 01/01/70 00:00 | |
| What about Keypad? which Port? | 01/01/70 00:00 | |
| read the tutorials section | 01/01/70 00:00 | |
| OPEN DRAIN | 01/01/70 00:00 | |
| please use right thread | 01/01/70 00:00 | |
| Advice | 01/01/70 00:00 | |
| 2 different Problem | 01/01/70 00:00 | |
| Help! | 01/01/70 00:00 | |
| re:help? | 01/01/70 00:00 | |
| Connect 7 pins of Keypad only? | 01/01/70 00:00 | |
re:Connect 7 pins of Keypad only | 01/01/70 00:00 | |
| re:How to use this program? | 01/01/70 00:00 |