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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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PC87366 데이터시트(PDF) 30 Page - National Semiconductor (TI) |
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PC87366 데이터시트(HTML) 30 Page - National Semiconductor (TI) |
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30 / 240 page  1.0 Signal/Pin Connection and Description (Continued) 30 www.national.com 1.4.15 Strap Configuration 1.4.16 System Hardware Monitoring Signal Pin/s I/O Buffer Type Power Well Description BADDR 101 I INSTRP VDD Base Address. Sampled by the trailing edge of the system reset to determine the base address of the configuration Index-Data register pair. During reset, it is pulled down by internal 30Kohm resistor. If no pull-up resistor is connected, it is sampled low, setting the Index-Data pair at 2Eh-2Fh. Connecting a 10K external pull-up resistor to VDD would make it sample high, setting the Index-Data pair at 4Eh-4Fh. PSLDC0 PSLDC1 99 107 I INSTRP VSB Note 1. Note 1.Make sure that the Serial Port driver is back-drive protected. Power Supply and LED Configuration. If no pull-up resistor is connected to these pins, pins 33-35 and 37 function as PWBTOUT, PSON, PWBTIN and SLPS5 respectively. Connecting a 10K external pull-up resistor to VSB causes these pins to function as GPOS0, GPOS1, GPIS2, and AVI0, respectively. PSONPOL 109 I INSTRP VSB Note 1. Power Supply On Polarity. If no pull-up resistor is connected to this pin, PSON is set active low with open-drain output. Connecting a 10K external pull-up resistor to VSB causes PSON to be set to active high with push-pull output. TEST 98 I INSTRP VDD Test. If sampled high on the trailing edge of system reset, this signal forces the device into test mode. This pin is for National Semiconductor use only, and should be left unconnected. Signal Pin(s) I/O Buffer Type Power Well Description ALARM 27 O OD6 VSB Alarm. Alerts on voltage input mismatch AVI0-6 37-43 I INAN1 AVDD Analog Voltage Inputs. Analog inputs of the A/D converter. D1N D2N 47 49 I INAN3 AVDD Diode Cathode. Diodes 1 and 2 return current sink. Must be grounded when not used. D1P D2P 48 50 O OAN2 AVDD Diode Anode. Diodes 1 and 2 current source. Connected to remote discrete diodes OTS1 OTS2 24 25 O OD6 VSB Overtemperature Shutdown. Indicate that an overtemperature was detected. See Section 2.8.9, the SuperI/O Configuration A register, bit 0, for further details on which pin/s is/are active for remote and local temperature sensing. TS1-3 47-49 I INAN1 AVDD Thermistor Sensors. Analog inputs. VREF 46 I/O INAN2, OAN1 AVDD Reference Voltage. Provides reference voltage for the on-chip A/D circuits. An external reference voltage should be connected to this input. |
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