HD64F36049 datasheet(143/562 Pages) RENESAS

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Section 9 I/O Ports

Rev. 3.00 Mar. 15, 2006 Page 111 of 526

REJ09B0060-0300

Section 9 I/O Ports

The group of this LSI has fifty-nine general I/O ports and eight general input-only ports. Thirteen

ports are large current ports, 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, an RTC output pin, a 14-

bit PWM output pin, a timer B1 input pin, and a timer V input pin. Figure 9.1 shows its pin

configuration.

P17/

IRQ3/TRGV

P16/

IRQ2

P15/

IRQ1/TMIB1

P14/

IRQ0

P12

P11/PWM

P10/TMOW

Port 1

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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