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PC97307 датащи(PDF) 188 Page - National Semiconductor (TI) |
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PC97307 датащи(HTML) 188 Page - National Semiconductor (TI) |
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188 / 218 page ![]() 188 Device Description www.national.com 13.2.12 Group 12 Pin List: P12, P16, P17, P20, P21. TABLE 13-20. DC Characteristics of Group 12 Input Pins TABLE 13-21. DC Characteristics of Group 12 Output Pins 13.2.13 Group 13 Pin List: AFD, INIT, SLIN, STB. Group 13 pins are back-drive protected. TABLE 13-22. DC Characteristics of Group 13 Input Pins TABLE 13-23. DC Characteristics of Group 13 Output Pins a. Not tested. Guaranteed by design. a. IOH is driven for a period of 3 KBC clock periods (of 8 MHz, 12 MHz or 16 MHz) after the low-to-high tran- sition, on pins P12, P16 and P17. a. Not tested. Guaranteed by design. a. Output from STB, AFD, INIT, SLIN is open-drain in all SPP modes, except in SPP Compatible mode when the setup mode is ECP-based (FIFO). (See Table 6-1 on page 112.) Otherwise, output from these signals is Level 2. External 4.7 K Ω pull-up resistors should be used. Symbol Parameter Conditions Min Max Units VIH Input High Voltage 2.0 VDD a V VIL Input Low Voltage −0.5 a 0.8 V VH Hysteresis 250 mV Symbol Parameter Conditions Min Max Units VOH Output High Voltage IOH = −2 mA a 2.4 V VOL Output Low Voltage IOL = 2 mA 0.4 V Symbol Parameter Conditions Min Max Units VIH Input High Voltage 2.0 VDD a V VIL Input Low Voltage −0.5 a 0.8 V VH Hysteresis 250 mV Symbol Parameter Conditions Min Max Units VOH Output High Voltage a IOH = −2 mA 2.4 V VOL Output Low Voltage IOL = 2 mA 0.4 V |
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