W741C205 Просмотр технического описания (PDF) - Winbond

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W741C205

4-BIT MICROCONTROLLER

Winbond 

Preliminary W741C20X

PIN DESCRIPTION

SYMBOL

XIN

XOUT

RA0−RA3

RB0−RB3

RC0−RC3

RD0−RD3

RE0/DOUT

RE1/CLKO

RE2/DIN

RE3/CLKI

MFP

INT

RES

VDD

VSS

I/O

FUNCTION

I Input pin for oscillator.

Connected to crystal or resistor to generate system clock by code option.

O Output pin for oscillator.

Connected to crystal or resistor to generate system clock by code option.

I/O Input/Output port. Input/output mode specified by port mode 1 register

(PM1). When used as output port, can provide high sink current for

driving LED.

I/O Input/Output port. Input/output mode specified by port mode 2 register

(PM2). When used as output port, can provide high sink current for

driving LED.

I/O Input/Output port. Input/output mode specified by port mode 4 register

(PM4). Each pin has an independent interrupt capability in input mode.

I/O Input/Output port. Input/output mode specified by port mode 5 register

(PM5).

I/O Special input/output port.

This port can be configured by software to act as the output of internal

port RT or the serial I/O port. When used as output port, can provide high

sink current for driving LED.

O Output pin only.

This pin can output modulating or nonmodulating frequency, or Timer 1

clock output specified by mode register 1 (MR1).

I External interrupt pin with pull-high resistor.

I System reset pin with pull-high resistor.

I Positive power supply (+).

I Negative power supply (-).

-4-

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