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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS8267 датащи(PDF) 85 Page - ams AG |
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AS8267 датащи(HTML) 85 Page - ams AG |
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85 / 136 page  Data Sheet AS8267 / AS8268 Revision 1.0, 19-Jun-07 Page 85 of 136 FLASH Memory Reliability The 32kByte Flash memory implemented in the AS8267 / AS8268 ICs provide an outstanding performance in respect to data retention time and endurance. Endurance is the parameter that specifies the cumulative write/erase cycles of the memory cells within the Flash memory. The data retention time of a Flash memory is a critical end-of-life parameter. This parameter specifies the maximum period of time, after programming, that data can be expected to be retrieved valid from the memory. According to the JEDEC A117 specification the Flash memory has a minimum endurance of 100,000 cycles and a retention time of 500 years at 65°C. Data Retention EEPROM austriamicrosystems AG Ea=0.6eV 0 25 50 75 100 125 150 175 200 225 250 275 300 75 85 95 105 115 125 135 145 Junction Temperature [°C] FLASH Security The AS8267 / AS8268 comprise of two different possibilities to protect Flash content against copying and manipulation. The detailed implementation will be explained in this chapter. |
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