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Z84C9012VSC датащи(PDF) 22 Page - Zilog, Inc. |
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Z84C9012VSC датащи(HTML) 22 Page - Zilog, Inc. |
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22 / 31 page ![]() Z84C90 KIO Serial/Parallel Counter Timer PS011802-0902 17 39 TdCTRr(INTf) CLK/TRG Rise to INT Fall Delay TsCTRr(Cr) satisfied TsCTRr(Cr) not satisfied (36)+(38) (1)+(36)+(38) (36)+(38) (1)+(36)+(38) 40 TcCTR CLK/TRG Cycle Time4 (2TcC) DC (2TcC) DC ns 41 TwCTRh CLK/TRG Width High 90 DC 90 DC ns 42 TwCTRI CLK/TRG Width Low 90 DC 90 DC ns 43 TrCTR CLK/TRG Rise Time 30 30 ns 44 TfCTR CLK/TRG Fall Time 30 30 ns 45 TdCr(ZCr) Clock Rise to ZC/TO Rise Delay 80 80 ns 46 TdCf(ZCf) Clock Fall to ZC/TO Fall Delay 80 80 ns SIO Timing 47 TdIOf(W/Rf) IORQ Fall to WT/RDY Fall Delay (Wait Mode) 130 110 ns 48 TdCr(W/Rf) Clock Rise to WT/RDY Delay (Ready Mode) 85 85 ns 49 TdCf(W/Rz) Clock Fall to WT/RDY Float Delay (Wait Mode) 90 80 ns 50 TwPh Pulse Width High 150 120 ns 51 TwPI Pulse Width Low 150 120 ns 52 TcTxC TxC Cycle Time 250 DC 200 DC ns 53 TwTxCh TxC Width High 85 DC 80 DC ns 54 TwTxCl TxC Width Low 85 DC 80 DC ns 55 TrTxC TxC Rise Time 60 60 ns 56 TfTxC TxC Fall Time 60 60 ns 57 TdTxCf(TxD) TxC Fall to TxD Delay (x1 mode) 160 120 ns 58 TdTxCf(W/Rf) TxC Fall to WT/RDY Fall Delay (Ready Mode)5 595 9 ns 59 TdTxCf(INTf) TxC Fall to INT Fall Delay5 595 9 ns 60 TcRxC RxC Cycle Time 250 DC 200 DC ns 61 TwRxCh RxC Width High 85 DC 80 DC ns 62 TwRxCl RxC Width Low 85 DC 80 DC ns Table 5. AC Characteristics of the Z84C90 (Continued) 8MHz 10MHz1 12MHz No. Symbol Parameter Min Max Min Max Min Max U/M |
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