Port 4; Table 8-15 Pins Of Port 4 - Fujitsu MB90420/5 (A) Series Hardware Manual

F2mc-16lx family 16-bit microcontrollers

Table of Contents

8.6 Port 4

Port 4 is a general-purpose I/O port that serves both as a resource input and output. Each pin can be

switched between the resource and the port by the bit. The function as a general-purpose I/O port is mainly

explained here. The configuration, pins, block diagram of the pins, and registers for port 4 are shown below.

n Configuration of port 4

Port 4 consists of the following three elements:

• General-purpose I/O pins, resource I/O pins (P40/SEG14 to P47/SEG15)

• Port 4 data register (PDR4)

• Port 4 direction register (DDR4)

n Pins of port 4

The I/O pins of the port 4 also serve as resource I/O pins, so when using a pin of port 4 as a resource I/O

pin, it cannot be used as a general-purpose I/O port. Table 8-15 shows the pins of port 4.

For the circuit type, see Section 1.7.

Port Function

(hysteresis)