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UPD753204 Datasheet(PDF) 8 Page - NEC |
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UPD753204 Datasheet(HTML) 8 Page - NEC |
8 / 80 page ![]() 8 µPD753204, 753206, 753208 3.1 Port Pins (2/2) Pin Name Input/Output Alternate Function 8-bit After Reset I/O Circuit Function I/O TYPE Note 1 P60 Input/Output KR0 No Input (F)-A P61 KR1 P62 KR2 P63 KR3 P80 Input/Output S23 Yes Input H P81 S22 P82 S21 P83 S20 P90 Input/Output S19 Input H P91 S18 P92 S17 P93 S16 Notes 1. Characters in parentheses indicate the Schmitt-trigger input. 2. Do not connect on-chip pull-up resistors specified by software when using as segment signal output pins. Programmable 4-bit input/output port (PORT6). This port can be specified for input/output bit- wise. On-chip pull-up resistors can be specified by software in 4-bit units. 4-bit input/output port (PORT8). On-chip pull-up resistors can be specified by software in 4-bit units. Note 2 4-bit input/output port (PORT9). On-chip pull-up resistors can be specified by software in 4-bit units. Note 2 |
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