LC87F5WC8A

No.A1898-10/27

Port Output Types

The table below lists the types of port outputs and the presence/absence of a pull-up resistor.

Data can be read into any input port even if it is in the output mode.

Port

Options Selected

in Units of

Option Type

Output Type

Pull-up Resistor

1

CMOS

Programmable (Note 1)

P00 to P07

1 bit

2

N-channel open drain

No

1

CMOS

Programmable

P10 to P17

1 bit

2

N-channel open drain

Programmable

1

CMOS

Programmable

P20 to P27

1 bit

2

N-channel open drain

Programmable

1

CMOS

Programmable

P30 to P36

1 bit

2

N-channel open drain

Programmable

P70

-

No

N-channel open drain

Programmable

P71 to P73

-

No

CMOS

Programmable

P80 to P87

-

No

N-channel open drain

No

1

CMOS

Programmable

PA0 to PA5

1 bit

2

N-channel open drain

Programmable

1

CMOS

Programmable

PB0 to PB7

1 bit

2

N-channel open drain

Programmable

1

CMOS

Programmable

PC0 to PC7

1 bit

2

N-channel open drain

Programmable

PE0 to PE7

-

No

CMOS

Programmable

PF0 to PF7

-

No

CMOS

Programmable

SI2P0, SI2P2

SI2P3

-

No

CMOS

No

SI2P1

-

No

CMOS (when selected as ordinary port)

N-channel open drain (When SIO2 data is

selected)

No

PWM0, PWM1

-

No

CMOS

No

XT1

-

No

Input only

No

XT2

-

No

Output for 32.768kHz quartz oscillator

N-channel open drain (when in general-

purpose No output mode)

No

Note 1: Programmable pull-up resistors for port 0 are controlled in 4-bit units (P00 to 03, P04 to 07).