HD6433644R datasheet(200/549 Pages) RENESAS

200 / 549 page

Section 8 I/O Ports

Rev. 6.00 Sep 12, 2006 page 180 of 526

REJ09B0326-0600

8.4

Port 3

8.4.1

Overview

Port 3 is a 8-bit I/O port, configured as shown in figure 8.3.

P3 /SO

P3 /SI

P3 /SCK

Port 3

Figure 8.3 Port 3 Pin Configuration

8.4.2

Table 8.8 shows the port 3 register configuration.

Table 8.8

Port 3 Registers

Name

Abbr.

R/W

Initial Value

Address

Port data register 3

PDR3

R/W

H'00

H'FFD6

Port control register 3

PCR3

H'00

H'FFE6

Port pull-up control register 3

PUCR3

R/W

H'00

H'FFEE

Port mode register 3

PMR3

R/W

H'00

H'FFFD

Port mode register 7

PMR7

R/W

H'F8

H'FFFF

Port Data Register 3 (PDR3)

Bit



P32

P31

P30

Initial value

Read/Write



R/W

Note:

* Bits 7 to 3 are reserved; they are always read as 0 and cannot be modified.

PDR3 is an 8-bit register that stores data for port 3 pins P32 to P30. If port 3 is read while PCR3

bits are set to 1, the values stored in PDR3 are read, regardless of the actual pin states. If port 3 is

read while PCR3 bits are cleared to 0, the pin states are read.

HD6433644R Datasheet(PDF) 200 Page - Renesas Technology Corp

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