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UPD78044H Datasheet(PDF) 46 Page - NEC |
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UPD78044H Datasheet(HTML) 46 Page - NEC |
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46 / 472 page  46 Chapter 2 Pin Function (µPD780828A Subseries) User’s Manual U16504EE1V1UD00 P50/SM31 4 O Leave open. P51/SM32 P52/SM33 P53/SM34 P54/SM41 P55/SM42 P56/SM43 P57/SM44 P60/SGOF/SGO 5 I/O Input: Connect to VDD or VSS via a resistor individually. Output: Leave open. P61/RCL/SGOA 5 P62/RXD0 8 P63/TXD0 5 P64/TI20 8 P65/TI21 8 P80/S15 17-B I/O Input: Connect to VDD or VSS via a resistor individually. Output: Leave open. P81/S14 P82/S13 P83/S12 P84/S11 P85/S10 P86/S9 P87/S8 P90/TI22/S23 17-B I/O Input: Connect to VDD or VSS via a resistor individually. Output: Leave open. P91/TI51/TO50/S22 17-B P92/TPO/S21 17-A P93/SCK31/S20 17-B P94/SO31/SIO31/S19 P95/SI31/S18 P96/S17 P97/S16 COM0-COM3 18 O Leave open VLCD -- Connect to VSS CRXD 1 I Connect to VDD CTXD 2 O Leave open. RESET 1I - AVDD / AVREF -- Connect to VDD AVSS -- Connect to VSS IC -- Connect directly to VSS VPP Table 2-3: Types of Pin Input/Output Circuits (2/2) Pin Name Input/Output Circuit Type I/O Recommended Connection for Unused Pins |
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