GMS81C1404 Datasheet, PDF (39/93 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C1404/GMS81C1408
PORT RBFUNC.4~0
Description
RB7/
TMR2OV
0
RB7 (Normal I/O Port)
1
Timer2 Overflow Output
RB6/EC1
0
RB6 (Normal I/O Port)
1
Event Counter 1 Input
RB5/
PWM1/
COMP1
0
RB5 (Normal I/O Port)
1
PWM1 Output /
Timer3 Compare Output
RB4/
PWM0/
COMP0
0
RB4 (Normal I/O Port)
1
PWM0 Output /
Timer1 Compare Output
RB3/INT1
0
RB3 (Normal I/O Port)
1
External Interrupt Input 1
RB2/INT0
0
RB2 (Normal I/O Port)
1
External Interrupt Input 0
RB1/BUZ
0
RB1 (Normal I/O Port)
1
Buzzer Output
RB0/AN0/
AVref
0¹
RB0 (Normal I/O Port)/
AN0 (ANSEL0=1)
1²
External Analog Reference
Voltage
1. When ANSEL0 = “0”, this port is defined for normal I/O port
(RB0).
When ANSEL0 = “1” and ADS2~0 = “000”, this port
can be used Analog Input Port (AN0).
2. When this bit set to “1”, this port defined for AVref, so it can
not be used Analog Input Port AN0 and Normal I/O
Port RB0.
June. 2001 Ver 1.2
37