C868 Datasheet, PDF (37/82 Pages) Infineon Technologies AG – 8-Bit Single-Chip Microcontroller

C868
Ports
The C868 has two kinds of ports. The first kind is push-pull ports instead of the traditional
quasi-bidirectional ports. The ports belonging to this kind are lsb of port 1 which is a 5-
bit I/O port and port 3 which is an eight-bit I/O port. When configured as inputs, these
ports will be high impedance with Schmitt trigger feature. Port 3 is alternate for capture/
compare functions whereas, port 1 has alternate functions for some of the pins.
The second kind is input ports which are shared by msb of port 1 which is a 3-bit input
port, the interrupts, timer 2 inputs, capture/compare hall inputs and analog inputs.
Data Sheet
37
V 1.0, 2003-05