UPD178018 datasheet(9/56 Pages) NEC

9 / 56 page

µPD178004, 178006, 178016, 178018

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-P06

I/O

7-bit input/output port.

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

INTP1-INTP6

P10-P15

I/O

Port 1.

Input

ANI0-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-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-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-P57

I/O

Port 5.

Input

—

8-bit input/output port.

Input/output mode can be specified bit-wise.

P60-P63

I/O

Port 6.

Middle voltage N-ch open drain

Input

—

8-bit input/output port.

input/output port.

P64-P67

Input/output mode can be

LEDs can be driven directly.

specified bit-wise.

P120-P125 I/O

Port 12.

Input

—

6-bit input/output port.

Input/output mode can be specified bit-wise.

P132-P134 Output

Port 13.

—

PWM0-PWM2

3-bit output port.

N-ch open-drain output port.

UPD178018 Datasheet(PDF) 9 Page - NEC

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