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UPD784938 Datasheet(PDF) 52 Page - NEC |
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UPD784938 Datasheet(HTML) 52 Page - NEC |
52 / 733 page ![]() CHAPTER 2 PIN FUNCTIONS 52 Preliminary User’s Manual U13987EJ1V0UM00 (1) Port pins (2/2) Pin Name Input/Output Alternate Function Function P40 to P47 Input/output AD0 to AD7 Port 4 (P4): • 8-bit input/output port • Input/output can be specified in 1-bit units • For input mode pins, on-chip pull-up resistor connection can be specified at once by means of software • LED drive capability P50 to P57 Input/output A8 to A15 Port 5 (P5): • 8-bit input/output port • Input/output can be specified in 1-bit units • For input mode pins, on-chip pull-up resistor connection can be specified at once by means of software • LED drive capability P60 to P63 Input/output A16 to A19 P64 RD P65 WR P66 WAIT/HLDRQ P67 REFRQ/HLDAK P70 to P77 Input/output ANI0 to ANI7 Port 7 (P7): • 8-bit input/output port • Input/output can be specified in 1-bit units P90 to P97 Input/output — Port 9 (P9): • 8-bit input/output port • Input/output can be specified in 1-bit units • For input mode pins, on-chip pull-up resistor connection can be specified at once by means of software P100 to P104 Input/output — P105 SCK3 P106 SI3 P107 SO3 Port 6 (P6): • 8-bit input/output port • Input/output can be specified in 1-bit units • For input mode pins, on-chip pull-up resistor connection can be specified at once by means of software Port 10 (P10): • 8-bit input/output port • Input/output can be specified in 1-bit units • For input mode pins, on-chip pull-up resistor connection can be specified at once by means of software • P105 and P107 can be set in N-ch open-drain mode |
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