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