Functions Of I/O Ports - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 8 I/O PORT
8.1

Functions of I/O Ports

The overview of functions of the I/O ports is shown.
Functions of I/O Ports
The I/O port outputs data from the CPU to the I/O pin and loads the signal input in the I/O pin in the CPU
by using the port data register (PDR). In addition, the port can randomly set the direction of the input/
output of the I/O pin in bit unit by the port direction register (DDR).
The MB90330 Series has 72 input/output pins and 22 open drain output pins.
P07 to P00, 17 to P10, P27 to P20, P37 to P30, P47 to P40, P57 to P50, P77 to P70, P87 to P80, P95 to P90,
PB6, and PB5 are I/O ports; P67 to P60, P96, and PA7 to PA0, PB4 to PB0 are open drain pins.
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