| ??? 02/28/03 17:46 Read: times |
#40294 - RE: Watchdog on Atmel CC01 Responding to: ???'s previous message |
A simple way ,if you have a spare pin is a RC circuit.. connect a resistor in parallel with a diode (cathode to VCC) to VCC. then connect a capacitor to the diode anode and to ground.then connect the diode anode to the port pin through a 1k resistor. when you first powerup the circuit , the capacitor will not be charged and you will read 0...after a time the cap charges giving you a 1. the diode and the 1k res protect the uC when you turn off the power. |
| Topic | Author | Date |
| Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 | |
| RE: It's there | 01/01/70 00:00 | |
| RE: It\\\\\\\'s there | 01/01/70 00:00 | |
RE: It's there | 01/01/70 00:00 | |
| RE: Watchdog on Atmel CC01 | 01/01/70 00:00 |