HMS87C13042A Datasheet, PDF (39/88 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

HMS87C130XA/120XA/110XA
PORT RBFUNC.4~0
Description
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
0
RB2 (Normal I/O Port)
RB2/INT0
1
External Interrupt Input 0
RB1/BUZ
0
RB1 (Normal I/O Port)
1
Buzzer Output
RB0/AN0/
AV_REF
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 AV_REF, so it can
not be used Analog Input Port AN0 and Normal I/O Port
RB0.
9.3 RC and RCIO registers
RC is a 2-bit bidirectional I/O port (address C4_H). Each
pin can be set individually as input and output through the
RCIO register (address C5_H).
RC Data Register
ADDRESS : C4H
RESET VALUE : Undefined
RC
-
--
-
-
- RC1 RC0
RC Direction Register
RCIO
-
-
-
ADDRESS : C5H
RESET VALUE : ------00
-
-
-
INPUT / OUTPUT DATA
DIRECTION SELECT
0 : INPUT PORT
1 : OUTPUT PORT
Figure 9-4 Registers of Port RC
36
Apr. 2001 ver 1.0