D78F9189CT View Datasheet(PDF) - NEC => Renesas Technology

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D78F9189CT

UPD78F9189CT, D78F9189CT / 8-Bit Single-chip Microcontroller

NEC => Renesas Technology 

CHAPTER 2 PIN FUNCTIONS

2.2.6 P60 to P63 (Port 6)

These pins constitute an 4-bit input-only port. They can function as A/D converter input pins as well as a

general-purpose input port.

(1) Port mode

In port mode, P60 to P63 function as an 8-bit input-only port.

(2) Control mode

In control mode, P60 to P63 function as A/D converter analog inputs (ANI0 to ANI3).

2.2.7 RESET

A low-level active system reset signal is input to this pin.

2.2.8 X1, X2

These pins are used to connect a crystal resonator for main system clock oscillation.

To supply an external clock, input the clock to X1 and input the inverted signal to X2.

2.2.13 VDD

VDD is a positive power supply port pin.

2.2.14 VSS

VSS is a ground potential port pin.

2.2.15 VPP (µPD78F9189 only)

High voltage apply pin for flash memory programming mode setting and program write/verify.

Directly connect this pin to VSS in normal operation mode.

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User’s Manual 2nd edition

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