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AT83SND1CXXX-ROTIL 데이터시트(PDF) 200 Page - ATMEL Corporation |
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AT83SND1CXXX-ROTIL 데이터시트(HTML) 200 Page - ATMEL Corporation |
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200 / 212 page ![]() 200 4109J–8051–10/06 AT8xC51SND1C 22.4.5 Flash Memory 22.4.5.1 Definition of symbols Table 167. Flash Memory Timing Symbol Definitions 22.4.5.2 Timings Table 168. Flash Memory AC Timing V DD = 2.7 to 3.3 V, TA = -40 to +85°C 22.4.5.3 Waveforms Figure 22-22. FLASH Memory - ISP Waveforms Note: 1. ISP must be driven through a pull-down resistor (see Section “In System Programming”, page 185). Figure 22-23. FLASH Memory - Internal Busy Waveforms Signals Conditions SISP L Low RRST V Valid B FBUSY flag X No Longer Valid Symbol Parameter Min Typ Max Unit T SVRL Input ISP Valid to RST Edge 50 ns T RLSX Input ISP Hold after RST Edge 50 ns T BHBL FLASH Internal Busy (Programming) Time 10 ms N FCY Number of Flash Write Cycles 100K Cycle T FDR Flash Data Retention Time 10 Years RST TSVRL ISP (1) TRLSX FBUSY bit TBHBL |
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