| ??? 02/25/06 14:40 Read: times |
#110787 - Depends on load Responding to: ???'s previous message |
Then IOL of p1.x = 1.6 mA or 10 mA?
Kindly let me know for any reasons in choosing a particular IOL value out of the two. If you want to drive additional digital circuitry, then no more than 1.6mA, which is a standard TTL-load by the way, must flow. Otherwise VOL exceeds 0.45V. But when wanting to drive a LED, then current may be higher, but not higher than 10mA. Kai |
| Topic | Author | Date |
| AT89s52 Port pin clarifications: | 01/01/70 00:00 | |
| nice copy, where is the question | 01/01/70 00:00 | |
| output characteristics | 01/01/70 00:00 | |
| most confusing post | 01/01/70 00:00 | |
| Answers | 01/01/70 00:00 | |
| Logic 1 to 0 transition | 01/01/70 00:00 | |
| You haven't read the 'bible' chapter... | 01/01/70 00:00 | |
| no details about transition from logic 1 | 01/01/70 00:00 | |
| other way 'round | 01/01/70 00:00 | |
| There ARE!! | 01/01/70 00:00 | |
| pFET2 | 01/01/70 00:00 | |
| Weak and very weak pull-ups | 01/01/70 00:00 | |
| maintaining low source impedence? | 01/01/70 00:00 | |
| by making thje driver a sink............ | 01/01/70 00:00 | |
| Pull-downs create problems | 01/01/70 00:00 | |
| Maximum IOL per port pin: 10 mA ? | 01/01/70 00:00 | |
| IOL | 01/01/70 00:00 | |
| IOL = 10mA or 1.6mA? in port 1 | 01/01/70 00:00 | |
Depends on load | 01/01/70 00:00 |