P10 To P17 (Port 1) - NEC 78014Y Series User Manual

8-bit single-chip microcontrollers
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3.2.2 P10 to P17 (Port 1)

These are 8-bit input/output ports. Besides serving as input/output ports, they function as an A/D converter analog
input.
The following operating modes can be specified bit-wise.
(1) Port mode
These ports function as 8-bit input/output ports. They can be specified bit-wise as input or output ports with port
mode register 1 (PM1). When used as an input port, an on-chip pull-up resistor can be connected to these ports
with a pull-up resistor option register (PUO).
(2) Control mode
These ports function as A/D converter analog input pins (ANI0 to ANI7). If the pins are specified as analog input
the on-chip pull-up resistor is automatically disabled.
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CHAPTER 3 PIN FUNCTION ( µ PD78014 Subseries)

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