HD64F36022 datasheet(121/384 Pages) RENESAS

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Section 9 I/O Ports

Rev. 4.00 Sep. 23, 2005 Page 95 of 354

REJ09B0025-0400

Section 9 I/O Ports

The group of this LSI has thirty general I/O ports and four general input-only ports. Port 8 is a

large current port, which can drive 20 mA (@V

OL = 1.5 V) when a low level signal is output. Any

of these ports can become an input port immediately after a reset. They can also be used as I/O

pins of the on-chip peripheral modules or external interrupt input pins, and these functions can be

switched depending on the register settings. The registers for selecting these functions can be

divided into two types: those included in I/O ports and those included in each on-chip peripheral

module. General I/O ports are comprised of the port control register for controlling inputs/outputs

and the port data register for storing output data and can select inputs/outputs in bit units. For

functions in each port, see Appendix B.1, I/O Port Block Diagrams. For the execution of bit

manipulation instructions to the port control register and port data register, see section 2.8.3, Bit

Manipulation Instruction.

9.1

Port 1

Port 1 is a general I/O port also functioning as IRQ interrupt input pins, timer V input pin, and

SCI3 I/O pin. Figure 9.1 shows its pin configuration.

P17/

IRQ3/TRGV

P16

P15

P14/

IRQ0

P12/SCK3_3*

P11

P10

Port 1

Note: * The SCK3_3 pin is not available in the H8/36014.

Figure 9.1 Port 1 Pin Configuration

Port 1 has the following registers.

• Port mode register 1 (PMR1)

• Port control register 1 (PCR1)

• Port data register 1 (PDR1)

• Port pull-up control register 1 (PUCR1)

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