UPD178004A datasheet(10/56 Pages) NEC

Part #	UPD178004A

Description	8-BIT SINGLE-CHIP MICROCONTROLLERS

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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10

µPD178004A, 178006A, 178016A, 178018A

3.2 PINS OTHER THAN PORT PINS

Pin Name

I/O

Function

After Reset Alternate Function

INTP0 to

Input

External maskable interrupt inputs with specifiable valid edges (rising

Input

P00 to P06

INTP6

edge, falling edge, both rising and falling edges).

SI0

Input

Serial interface serial data input

Input

P25/SB0/SDA0

SI1

P20

SO0

Output

Serial interface serial data output

Input

P26/SB1/SDA1

SO1

P21

SB0

I/O

Serial interface serial data input/output

Input

P25/SI0/SDA0

SB1

P26/SO0/SDA1

SDA0

P25/SI0/SB0

SDA1

P26/SO0/SB1

SCK0

I/O

Serial interface serial clock input/output

Input

P27/SCL

SCK1

P22

SCL

P27/SCK0

STB

Output

Serial interface automatic transmit/receive strobe output

Input

P23

BUSY

Input

Serial interface automatic transmit/receive busy input

Input

P24

TI1

Input

External count clock input to 8-bit timer (TM1)

Input

P33

TI2

External count clock input to 8-bit timer (TM2)

P34

BEEP

Output

Buzzer output

Input

P36

ANI0 to ANI5 Input

A/D converter analog input

Input

P10 to P15

PWM0 to PWM2

Output

PWM output

—

P132 to P134

EO0, EO1

Output

Error out output from charge pump of the PLL frequency synthesizer

—

VCOL

Input

Inputs PLL local band frequency (In HF, MF mode)

—

VCOH

Input

Inputs PLL local band frequency (In VHF mode)

—

AMIFC

Input

Inputs AM intermediate frequency counter

—

FMIFC

Input

Inputs FM intermediate frequency counter

—

RESET

Input

System reset input

—

X1

Input

System clock oscillation resonator connection

—

X2

—

——

REGOSC

—

Oscillation regulator. Connected to GND via a 0.1-

µF capacitor.

—

REGCPU

—

CPU power supply regulator. Connected to GND via a 0.1-

µF capacitor.

—

VDD

—

Positive power supply

—

GND

—

Ground

——

VDDPORT

—

Positive power supply for port block

—

GNDPORT

—

Ground for port block

—

VDDPLL Note

—

Positive power supply for PLL

—

GNDPLL Note

—

Ground for PLL

—

IC

—

Internally connected. Connected to GND or GNDPORT.

—

Note

Connect a capacitor of approximately 1 000 pF between the VDDPLL pin and GNDPLL pin.

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UPD178004A Datasheet(PDF) 10 Page - NEC

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