ADAM27P16 datasheet(5/39 Pages) ABOV

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ADAM27PXX

1. Overview

1.5. Pin Function

NAME

INPUT

OUTPUT

FUNCTION

@RESET

@STOP

K0 ~ K3

R0 ~ R2

I/O

-. 4-bit I/O port. (Input mode is set only when each of

them output `H`)

-. Each pin has STOP mode release function

in input mode.

-. Output mode is set when each of them output `L`.

-. When used as `output`, each pin can be set and

reset independently.

-. When set as the input mode, input state of pin is

read. At output mode, if port is read, data register

is read instead of the state of pin.

Input

(with Pull-up)

Key-Strobe

(at T-key Scan)

Keep status

Before STOP

(at M-key Scan)

P0 ~ P3

I/O

-. 4-bit I/O port. (Input mode is set only when each of

them output `H`)

-. Each pin has STOP mode release function

in input mode.

-. Output mode is set when each of them output `L`.

-. When used as `output`, each pin can be set and

reset independently.

-. When T-key Scan is disabled, P0~P3 are forcibly

Low output at STOP mode.

-. When set as the input mode, input state of pin is

read. At output mode, if port is read, data register

is read instead of the state of pin.

Input

(with Pull-up)

Key-Strobe

(at T-key Scan)

Low

(at M-key Scan)

CS0~CS1

I/O

-. 2-bit I/O port. (Input mode is set only when each of

them output `H` and pull-up is enabled.)

-. Pull-ups can be enabled by user program.

-. Output mode is set when each of them output `L`,

or when it’s pull-up is disabled.

-. When used as `output`, each pin can be set and

reset independently.

-. When set as the input mode, input state of pin is

read. At output mode, if port is read, data register

is read instead of the state of pin.

Hi-Z

Keep status

before STOP

ROUT

Output

-. High Current Pulse Output.

-. N-ch open drain output.

Hi-Z

VDD

Power

-. Positive power supply.

GND

Power

-. Ground

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