HD64F36024FX Datasheet, PDF (123/386 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
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.
Port 1
P17/IRQ3/TRGV
P16
P15
P14/IRQ0
P12/SCK3_3*
P11
P10
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)
Rev. 4.00 Sep. 23, 2005 Page 95 of 354
REJ09B0025-0400