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Z8018233FSC 데이터시트(PDF) 97 Page - Zilog, Inc. |
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Z8018233FSC 데이터시트(HTML) 97 Page - Zilog, Inc. |
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97 / 109 page ![]() 3-97 Z80182/Z8L182 ZILOG INTELLIGENT PERIPHERAL PRELIMINARY Zilog DS971820600 Table D. Z85230 System Timing Table 20 MHz No. Symbol Parameter Min Max Notes [4] 1 TdRxC(REQ) /RxC to /W//REQ Valid 13 18 [2] 2 TdRxC(W) /RxC to /Wait Inactive 13 18 [1,2] 3 TdRxC(SY) /RxC to /SYNC Valid 9 13 [2] 4 TdRxC(INT) /RxC to /INT Valid 15 22 [1,2] 5 TdTxC(REQ) /TxC to /W//REQ Valid 8 12 [3] 6 TdTxC(W) /TxC to /Wait Inactive 8 15 [1,3] 7 TdTxC(DRQ) /TxC to /DTR//REQ Valid 7 11 [3] 8 TdTxC(INT) /TxC to /INT Valid 9 14 [1,3] 9 TdSY(INT) /SYNC to /INT Valid 2 6 [1] 10 TdExT(INT) /DCD or /CTS to /INT Valid 3 9 [1] Notes: These AC parameters values are preliminary and subject to change without notice. [1] Open-drain output, measured with open-drain test load. [2] /RxC is /RTxC or /TRxC, whichever is supplying the receive clock. [3] /TxC is /TRxC or /RTxC, whichever is supplying the transmit clock. [4] Units equal to TcPc Table E. I/O Port Timing Z8L182 Z80182 20 MHz 33 MHz No. Symbol Parameter Min Max Min Max 1 TsPIA(RD) Port Data Input Setup to /RD Fall 20 20 2 ThPIA(RD) Port Data Input Hold From /RD Rise 0 0 3 TdWR F(PIA) Port Data Output Delay From /WR Fall 60 60 4T FWRF(PIA) Port Data Output Float From /WR Fall 0 0 Table F. External Bus Master Timing Z8L182 Z80182 20 MHz 33 MHz No. Symbol Parameter Min Max Min Max 1 TsA(IORQf) Address to /IORQ Fall Setup 10 5 2 TsIOf(WRf) /IORQ Fall to /WR Fall Setup 0 0 3 TsIOf(RDf) /IORQ Fall to /RD Fall Setup 0 0 4 ThIOR(WR R) /IORQ Rise From /WR Rise Hold 0 0 5 ThIOR(RD R) /IORQ Rise From /RD Rise Hold 0 0 6 TdRDf(DO) /RD Fall to Data Out Valid Delay 50 45 7T HRDR(DO) /RD Rise to Data Out Valid Hold 0 0 8T SD(WRR) Data In to /WR Fall Setup 50 50 9 THD(WR R) Data In From /WR Rise Hold 10 8 10 |
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