GMS87C1404 查看數據表（PDF） - Hyundai Micro Electronics

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GMS87C1404

CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

Hyundai Micro Electronics 

HYUNDAI MicroElectronics

GMS87C1404/GMS87C1408

• RB1/BUZ, RB4/PWM0/COMP0, RB5/PWM1/COMP1, RB7/TMR2OV, RC6/SOUT

PWM/COMP

BUZ,TMR2OV,SOUT

1

Data Reg.

Data Bus

0

Function

Select

Data Bus

Direction Reg.

Data Bus

Read

VDD

VSS

• RB2/INT0, RB3/INT1, RD0/INT2, RD1/INT3

Pull-up

Select

Data Bus

Function

Select

Data Bus

Data Bus

INT0, INT1

INT2, INT3

Data Reg.

Direction Reg.

Read

Weak Pull-up

VDD

VSS

Schmitt Trigger

• RD2

Data Bus

Data Bus

Data Bus

Data Reg.

Direction Reg.

Read

VDD

VSS

Oct. 1999 Ver 1.0

9

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