| ??? 04/19/11 13:55 Read: times |
#181954 - Supervisor Chip Responding to: ???'s previous message |
Thank you Erik, yes, I realize there are some different packages for 80C535 with different pinout assignment. So this portion should read : 1. Set the Reset pin normally high, merely by connecting a 10µF from this pin to Gnd because this pin is already pulled high internally. (while 80C31 needs this pin normally low). 2. Connected a 0.1 µF from Vcc pin to Gnd. 3. Connected a 22 µF from V reference to Gnd. Also connected a 100 Ohm resistor from this pin to +5V Supply. Could you please explain a bit about the nessecity of Supervisor Chip (is it like MAX706 or MAX6303) here? Jusman Sulaiman |
| 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 |