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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AD822 데이터시트(PDF) 80 Page - Analog Devices |
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AD822 데이터시트(HTML) 80 Page - Analog Devices |
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80 / 88 page  ADuC841/ADuC842/ADuC843 Rev. 0 | Page 80 of 88 Parameter 16 MHz Core Clk 8 MHz Core Clock EXTERNAL DATA MEMORY WRITE CYCLE Min Max Min Max Unit tWLWH WR Pulse Width 65 130 ns tAVLL Address Valid after ALE Low 60 120 ns tLLAX Address Hold after ALE Low 65 135 ns tLLWL ALE Low to RD or WR Low 130 260 ns tAVWL Address Valid to RD or WR Low 190 375 ns tQVWX Data Valid to WR Transition 60 120 ns tQVWH Data Setup before WR 120 250 ns tWHQX Data and Address Hold after WR 380 755 ns tWHLH RD or WR High to ALE High 60 125 ns ALE (O) PORT 2 (O) tWHLH tWLWH tLLWL tAVWL tLLAX tAVLL tQVWX tQVWH tWHQX A0 A7 DATA A16 A23 V8 A15 PSEN (O) WR (O) Figure 89. External Data Memory Write Cycle |
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