MSM6575 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Fabricante

MSM6575

Operatable at 0.9 V and Built-in Buzzer Circuit 4-Bit Microcontroller

Oki Electric Industry 

¡ Semiconductor

MSM6545/6575/6545L/6575L

PIN DESCRIPTIONS

Symbol

PORT0

(P0.0 to P0.3)

PORT1

(P1.1 to P1.3)

PORT2

(P2.0 to P2.3)

PORT3

(P3.0 to P3.3)

PORT4

(P4.0 to P4.3)

PORT5

(P5.0 to P5.3)

PORT6

(P6.0 to P6.3)

PORT7

(P7.0 to P7.3)

BD

RESET

TEST1

TEST2

TEST3

XT

XTB

VDD

VSS1

VSS2

VCP

VCM

VEE

Type

Description

I/O 4-bit Input-output port, I/O switchable, with/without input pull-down resistor

I/O 4-bit Input-output port, I/O switchable, with/without input pull-down resistor

4-bit Input-output port, I/O switchable,

I/O

with/without input pull-down resistor

External interrupt

P2.0 to P2.3

port

I/O 4-bit Input-output port, I/O switchable, with/without input pull-down resistor

I/O 4-bit Input-output port, I/O switchable, with/without input pull-down resistor

I/O 4-bit Input-output port, I/O switchable, with/without input pull-down resistor

4-bit Input-output port, I/O switchable,

I/O

with/without input pull-down resistor

P6.3: SCLK

Shared with serial

P7.0: SOUT

4-bit input port

port

P7.1: SIN

I Tie to the negative pole of the battery when

P7.2: BU/D Shared with 4-bit

not used.

P7.3: CCLK up/down counter

O Buzzer output pin

I Reset pin with input pull-down resistor

Testing pins with input pull-down resistor

I

Tie to the negative pole of the battery.

I

Connection pins for crystal oscillator

O

— 0 V power supply pin

— –1.5 V supply pin (power supply pin for –1.5 V operation)

— –3.0 V supply pin (power supply pin for –3.0 V operation)

— Connection pins for internal potential development capacitor

— Supply pin for internal logic (constant voltage circuit output pin)

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