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UPD753016GC Datasheet(PDF) 9 Page - NEC |
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UPD753016GC Datasheet(HTML) 9 Page - NEC |
9 / 80 page 9 µPD753012, 753016, 753017 3.1 Port Pins (2/2) Pin Name Input/Output Dual Function 8-bit At Reset I/O Circuit Function Pin I/O TYPE Note 1 P60 Input/Output KR0 Input F -A P61 KR1 P62 KR2 P63 KR3 P70 Input/Output KR4 Input F -A P71 KR5 P72 KR6 P73 KR7 BP0 Output S24 × Note 2 H-A BP1 S25 BP2 S26 BP3 S27 BP4 Output S28 BP5 S29 BP6 S30 BP7 S31 Notes 1. Circled characters indicate the Schmitt-trigger input. 2. For BP0 to BP7, VLC1 is selected as an input source. The output levels differ depending on BP0 to BP7 and the external circuit of the VLC1. Example BP0 to BP7 are connected each other internally in the µPD753017 as shown below. Therefore, the output levels of BP0 to BP7 are determined by the levels of R1, R2, and R3 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 in software in 4-bit units. 4-bit input/output port (PORT7). On-chip pull-up resistors can be specified in software in 4-bit units. 1-bit output port (BIT PORT) Also used for segment output pins. VLC1 R1 BP1 R3 BP0 R2 VDD ON ON PD753017 µ |
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