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PC87332VLJ 数据表(PDF) 85 Page - National Semiconductor (TI) |
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PC87332VLJ 数据表(HTML) 85 Page - National Semiconductor (TI) |
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85 / 98 page  90 Electrical Characteristics (Continued) DC CHARACTERISTICS Under Recommended Operating Conditions (Continued) Symbol Parameter Conditions Min Typ Max Units MICROPROCESSOR AND IDE INTERFACE PINS VOH Output High Voltage IOH eb75 mA on 24 V D0 – 7 IDED7 IRQ3 – 7 DRQ IOH eb3mAon DTR RTS SOUT PD0 – 7 MFM DRATE01 IDEHI IDELO HCS0 HCS1 VOL Output Low Voltage IOL e 12 mA on 04 V D0 – 7 IDED7 IRQ3 – 7 DRQ ZWS IOCHRDY MFM IOL e 6mAon DTR RTS SOUT HCS0 HCS1 IOL e 3mAon DRATE01 IDEHI IDELO IOZ Input TRI-STATE Leakage Current VIN e VDD 50 m A (D7 – 0 IRQ3 – 7 DRQ) VIN e VSS b 50 DISK INTERFACE PINS (Note 6) VH Input Hysteresis 250 mV VOH Output High Voltage (Note 7) IOH eb2 mA 24 V VOL Output Low Voltage IOL e 20 mA 04 V ILKG Output High Leakage Current (Note 7) VIN e VDD 10 m A VIN e VSS b 10 OSCILLATOR PIN (X1OSC) VIH XTAL1 Input High Voltage 20 V VIL XTAL1 Input Low Voltage 04 V IXLKG XTAL1 Leakage Current VIN e VDD 400 m A VIN e VSS b 400 PARALLEL PORT PINS IOH High Level Output Current (Note 8) VOH e 24V 12 mA IOL Low Level Output Current VOL e 04V 12 mA Note 6 When PPM is active and FDC is selected via the parallel port pins the parallel port pins behave as the other Disk Interface pins If FDC is not selected (PNF e 1) or PPM is not active the parallel port pins behave normally Note 7 VOH and ILKG for the disk interface pins is valid for CMOS buffered outputs only Note 8 AFD INIT SLIN and STB are open drain pins when the PC87332 parallel port is operating in one of the following modes Compatible Extended EPP17 ECP mode 0 or ECP mode 2 if PCR1 is 0 47 kX resistors should be used 85 |
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