| ??? 10/21/05 06:58 Read: times |
#102707 - It's the nature of the beast! Responding to: ???'s previous message |
Ruben Dario Porras Sanche said:
i want to store the data in those vars even if i cut the power. Then you cannot use plain Static RAM (nor even Dynamic RAM). plain Static RAM is volatile - that is, it loses its contents when power is removed. Therefore, you have 2 options: 1. Provide a backup power source, so that power to the memory remains even if the main power supply fails. Charles has given a quick & dirty way to do this: http://www.8052.com/forum/read.phtml?id=102702 2. Uses a non-volatile storage medium. Several have been mentioned already. In addition to the above, you also need to ensure that your 'C' startup code does not clear the memory contents! |
| Topic | Author | Date |
| data storage | 01/01/70 00:00 | |
| Reset ? | 01/01/70 00:00 | |
| sorry | 01/01/70 00:00 | |
| reset routine | 01/01/70 00:00 | |
| OR | 01/01/70 00:00 | |
| modifying startup file is no good | 01/01/70 00:00 | |
| Put a 6 volt batter and 1N4004 diode | 01/01/70 00:00 | |
It's the nature of the beast! | 01/01/70 00:00 |