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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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AT89C5132-ROTIL Folha de dados(PDF) 20 Page - ATMEL Corporation |
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AT89C5132-ROTIL Folha de dados(HTML) 20 Page - ATMEL Corporation |
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20 / 38 page  24 AT89C5132 4173CS–USB–07/04 Table 3. External 8-bit Bus Cycle – Data Write AC Timings V DD = 2.7 to 3.3V, TA = -40° to +85°C Waveforms Figure 1. External 8-bit Bus Cycle – Data Read Waveforms Symbol Parameter Variable Clock Standard Mode Variable Clock X2 Mode Unit Min Max Min Max T CLCL Clock Period 50 50 ns T LHLL ALE Pulse Width 2·T CLCL-15 T CLCL-15 ns T AVLL Address Valid to ALE Low T CLCL-20 0.5·T CLCL-20 ns T LLAX Address hold after ALE Low T CLCL-20 0.5·T CLCL-20 ns TLLWL ALE Low to WR Low 3·TCLCL-30 1.5·TCLCL-30 ns TWLWH WR Pulse Width 6·TCLCL-25 3·TCLCL-25 ns TWHLH WR High to ALE High TCLCL-20 TCLCL+20 0.5·TCLCL-20 0.5·TCLCL+20 ns TAVWL Address Valid to WR Low 4·TCLCL-30 2·TCLCL-30 ns TQVWH Data Valid to WR High 7·TCLCL-20 3.5·TCLCL-20 ns TWHQX Data Hold after WR High TCLCL-15 0.5·TCLCL-15 ns T AVDV T LLAX T RHDX T RHDZ T AVLL TAVRL P2 P0 RD ALE TLHLL TRLRH Data In A15:8 T RLAZ TLLRL TRHLH TRLDV D7:0 A7:0 |
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