| ??? 09/23/05 19:35 Read: times |
#101466 - Data retention and load dump suppression Responding to: ???'s previous message |
Pragnesh said:
What are thes main point to be considered for power supply and EMI/EMC. Battery voltage can show extreme interference and spikes and dips. Load dump suppression is critical. Some useful information about auomtotive EMC issues can be found here: http://rb.alionscience.com/PF-9326-D.pdf Another big problem is data retention of code memory of micro at high ambient temperatures! Most micros' data retentions are only specified for rather low ambient temperatures (lower than 40°C). What is needed is specified data at 80°C. I know from one Motorola's micro, that it's specified at 80°C, but I don't know whether there exist some '51 derivatives today, too. But wasn't really searching for this... Kai |
| Topic | Author | Date |
| 8051 in AUTOMOBILE | 01/01/70 00:00 | |
| 8051 is not popular in automotive | 01/01/70 00:00 | |
| 8051 | 01/01/70 00:00 | |
Hello | 01/01/70 00:00 | |
| Automotive | 01/01/70 00:00 | |
| MISRA? | 01/01/70 00:00 | |
| And this | 01/01/70 00:00 | |
| Humidity; thermal shock | 01/01/70 00:00 | |
| RF Problems | 01/01/70 00:00 | |
| Good points | 01/01/70 00:00 | |
| Data retention and load dump suppression | 01/01/70 00:00 | |
| for some apps GM requires 120 °C | 01/01/70 00:00 |