PD780133 datasheet(39/558 Pages) NEC

номер детали	PD780133

подробное описание детали	8-Bit Single-Chip Microcontrollers

PDF	558 Pages

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производитель	NEC [NEC]

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CHAPTER 2 PIN FUNCTIONS

User’s Manual U16228EJ2V0UD

(2) Non-port pins (2/2)

Pin Name

I/O

Function

After Reset

Alternate Function

AVREF

Input

A/D converter reference voltage input and positive power

supply for port 2

−

AVSS

−

A/D converter ground potential. Make the same potential as

EVSS or VSS.

−

KR0 to KR7

Input

Key interrupt input

Input

P70 to P77

REGC

−

Connecting regulator output stabilization capacitor. When

using the regulator, connect to VSS via a capacitor (1

µF:

recommended). When the regulator is not used, connect

directly to VDD.

−

RESET

Input

System reset input

−

Input

−

Connecting resonator for X1 input clock

−

XT1

Input

−

XT2

−

Connecting resonator for subsystem clock

−

VDD

−

Positive power supply (except for ports)

−

EVDD

−

Positive power supply for ports

−

VSS

−

Ground potential (except for ports)

−

EVSS

−

Ground potential for ports

−

Internally connected. Connect directly to EVSS or VSS.

−

VPP

−

Flash memory programming mode setting. High-voltage

application for program write/verify. Connect to EVSS or VSS in

normal operation mode.

−

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