UPD75048CW 查看數據表（PDF） - NEC => Renesas Technology

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UPD75048CW

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75048

(cont'd)

Pin Name Input/Output Also Served

As

Function

When Reset

AN0-AN3

AN4-AN7

AVREF+

AVREF-

AVDD

AVSS

Input

Input

Input

—

—

X1, X2

Input

XT1, XT2 Input

RESET

IC

VDD

VSS

Input

—

—

—

—

8-bit analog input

—

Reference voltage input

—

Pins only for A/D

(AVDD side)

converter

—

Reference voltage input

(AVSS side)

—

Positive power supply

—

GND

A crystal/ceramic resonator for the main

system clock is connected across these pins.

—

When using the external clock, the X1 pin

inputs the external clock, and the X2 pin

inputs the reverse phase of the external clock

signal.

A crystal resonator for the subsystem clock is

connected across these pins. When using the

—

external clock, the XT1 pin inputs the external

clock, and the XT2 pin inputs the reverse

phase of the external clock signal. The XT1 pin

can be used as a 1-bit input(test) pin.

—

System reset input

—

Internally Connected. Should be connected directly

to VDD.

—

Positive power supply

—

GND

*1: Circles indicate Schmitt trigger inputs.

Input

—

—

—

—

—

—

—

—

—

—

Input/

Output

Circuit

TYPE*1

Y-A

Y

Z-A

Z-A

—

—

—

—

B

—

—

—

12

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