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PC87309VLJ Datasheet(PDF) 166 Page - National Semiconductor (TI) |
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PC87309VLJ Datasheet(HTML) 166 Page - National Semiconductor (TI) |
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166 / 192 page  Device Specifications 166 www.national.com 10.2 DC CHARACTERISTICS OF PINS, BY GROUP The following tables list the DC characteristics of all device pins described in Section 1.2. The pin list preceeding each table lists the device pins to which the table applies. 10.2.1 Group 1 Pin List: A11-0, AEN, CLKIN, CTS2,1, DACK3-1, DCD2,1, DSKCHG, DSR2,1, ID3-0, INDEX, IORD, IOWR, MR, RDATA, RI2,1, SIN2,1, TC, TRK0, WP All Group 1 pins are back-drive protected. 1. Not tested. Guaranteed by design. 10.2.2 Group 2 Pin List: BUSY, PE, SLCT, WAIT Output from SLCT, PE and BUSY is open-drain in all SPP modes, except in SPP Compatible mode when the setup mode is ECP-based FIFO and bit 4 of the Control2 parallel port register is 1. (See TABLE 4-1 "Parallel Port Mode Selection" on page 80.) Otherwise, output from these signals is level 2. External 4.7 K Ω pull-up resistors should be used. PE is in Group 2 only if bit 2 of PP Confg0 Register is “0” (see Section 4.5.19 "PP Confg0 Register" on page 94). All group 2 pins are back-drive protected. 1. Not tested. Guaranteed by design. 10.2.3 Group 3 Pin List: ACK, ERR, PE Output from ACK and ERR is open-drain in all SPP modes, except in SPP Compatible mode when the setup mode is ECP- based FIFO and bit 4 of the Control2 parallel port register is 1. (See TABLE 4-1 "Parallel Port Mode Selection" on page 80.) Otherwise, output from these signals is level 2. External 4.7 K Ω pull-up resistors should be used. PE is in Group 3 only if bit 2 of PP Confg0 Register is “1” (see Section 4.5.19 "PP Confg0 Register" on page 94). All group 3 pins are back-drive protected. 1. Not tested. Guaranteed by design. Symbol Parameter Conditions Min Max Unit VIH Input High Voltage 2.0 VDD 1 V VIL Input Low Voltage −0.51 0.8 V IIL Input Leakage Current VIN = VDD 10 µA VIN = VSS −10 µA VH Input Hysteresis 250 mV Symbol Parameter Conditions Min Max Unit VIH Input High Voltage 2.0 VDD 1 V VIL Input Low Voltage −0.51 0.8 V IIL Input Leakage Current VIN = VDD 120 µA VIN = VSS −10 µA Symbol Parameter Conditions Min Max Unit VIH Input High Voltage 2.0 VDD 1 V VIL Input Low Voltage −0.51 0.8 V IIL Input Leakage Current VIN = VDD 10 µA VIN = VSS −120 µA |
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