D78F9189CT 查看數據表（PDF） - NEC => Renesas Technology

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D78F9189CT

UPD78F9189CT, D78F9189CT / 8-Bit Single-chip Microcontroller

NEC => Renesas Technology 

CHAPTER 2 PIN FUNCTIONS

CHAPTER 2 PIN FUNCTIONS

2.1 Pin Function List

(1) Port pins

Pin Name

P00 to P04

P10, P11

P20

P21

P22

P23

P24

P25

P26

P30

P31

P32

P33

P50 to P53

P60 to P63

I/O

I/O

I/O

I/O

I/O

I/O

Input

Function

Port 0

5-bit input/output port

Input/output mode can be specified in 1-bit units

When used as an input port, an on-chip pull-up resistor can

be specified by means of pull-up resistor option register 0

(PU0).

Port 1

2-bit input/output port

Input/output mode can be specified in 1-bit units

When used as an input port, an on-chip pull-up resistor can

be specified by means of pull-up resistor option register 0

(PU0).

Port 2

7-bit input/output port

Input/output mode can be specified in 1-bit units

For P20 to P22, P25, and P26, an on-chip pull-up resistor

can be specified by means of pull-up resistor option register

B2 (PUB2).

Only P23 and P24 can be used as N-ch open-drain

input/output port pins.

Port 3

4-bit input/output port

Input/output mode can be specified in 1-bit units

An on-chip pull-up resistor can be specified by means of pull-

up resistor option register B3 (PUB3).

Port 5

4-bit N-ch open-drain input/output port

Input/output mode can be specified in 1-bit units

For a mask ROM version, an on-chip pull-up resistor can be

specified by the mask option.

Port 6

4-bit input-only port

After Reset

Input

Input

Input

Input

Input

Input

Alternate Function

−

−

SCK20/ASCK20

SO20/TxD20

SI20/RxD20

−

−

TI80/SS20

TO80

INTP0/TI81/CPT90

INTP1/TO81

INTP2/TO90

INTP3/TO82/BZO90

−

ANI0 to ANI3

22

User’s Manual 2nd edition

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