| ??? 04/19/11 14:42 Read: times |
#181955 - you say you want to test chips Responding to: ???'s previous message |
Could you please explain a bit about the nessecity of Supervisor Chip (is it like MAX706 or MAX6303) here?
you say you want to test chips, do you want to trash a chip because your abnomiable RC reset failed? Anyhow you should be able to test the 80C535 in a test rig for any other '51 however there may be things you need to do to the code. What this may be the datasheet should tell. If I recall (it's been ages) the 80C535 has a couple of P1 pins which are open collector, that may be one issue Erik |
| Topic | Author | Date |
| Is 80C535 Compatible with 80C31? | 01/01/70 00:00 | |
| do not use pin numbers | 01/01/70 00:00 | |
| Supervisor Chip | 01/01/70 00:00 | |
| you say you want to test chips | 01/01/70 00:00 | |
| Reset Circuitry for 80C535 | 01/01/70 00:00 | |
| Timing | 01/01/70 00:00 | |
| probably because ... | 01/01/70 00:00 | |
| Supervisor/Watchdog Timer chip | 01/01/70 00:00 | |
| No timer needed to kick watchdog | 01/01/70 00:00 | |
| The internal Watchdog Timer | 01/01/70 00:00 | |
| good choice | 01/01/70 00:00 | |
| NE555 | 01/01/70 00:00 | |
| 8051 and 555 reset | 01/01/70 00:00 | |
| 555 Reset circuitry | 01/01/70 00:00 | |
| bad choice | 01/01/70 00:00 | |
| Reset Supervisor | 01/01/70 00:00 | |
| there are other possibilities | 01/01/70 00:00 | |
Other source | 01/01/70 00:00 | |
| did the datasheet not say so? | 01/01/70 00:00 | |
| It says so | 01/01/70 00:00 | |
| would it not be a good idea to do so before ... | 01/01/70 00:00 | |
| explain a bit about the nessecity of Supervisor Chip | 01/01/70 00:00 |