UPD178004A datasheet(9/56 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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9

µPD178004A, 178006A, 178016A, 178018A

3. PIN FUNCTION LIST

3.1 PORT PINS

Pin Name

I/O

Function

After Reset Alternate Function

P00

Input

Port 0.

Input only

Input

INTP0

P01 to P06 I/O

7-bit input/output port.

Input/output mode can be specified bit-wise. Input

INTP1 to INTP6

P10 to P15 I/O

Port 1.

Input

ANI0 to ANI5

6-bit input/output port.

Input/output mode can be specified bit-wise.

P20

I/O

Port 2.

Input

SI1

P21

8-bit input/output port.

SO1

P22

Input/output mode can be specified bit-wise.

SCK1

P23

STB

P24

BUSY

P25

SI0/SB0/SDA0

P26

SO0/SB1/SDA1

P27

SCK0/SCL

P30 to P32 I/O

Port 3.

Input

—

P33

8-bit input/output port.

TI1

P34

Input/output mode can be specified bit-wise.

TI2

P35

—

P36

BEEP

P37

—

P40 to P47 I/O

Port 4.

Input

—

8-bit input/output port.

Input/output mode can be specified in 8-bit units.

Test input flag (KRIF) is set to 1 by falling edge detection.

P50 to P57 I/O

Port 5.

Input

—

8-bit input/output port.

Input/output mode can be specified bit-wise.

P60 to P63 I/O

Port 6.

Middle voltage N-ch open drain

Input

—

8-bit input/output port.

input/output port.

P64 to P67

Input/output mode can be

LEDs can be driven directly.

specified bit-wise.

P120 to

I/O

Port 12.

Input

—

P125

6-bit input/output port.

Input/output mode can be specified bit-wise.

P132 to

Output

Port 13.

—

PWM0 to

P134

3-bit output port.

PWM2

N-ch open-drain output port.

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