HD64F3644PV Datasheet, PDF (191/551 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 I/O Ports
Section 8 I/O Ports
8.1 Overview
The H8/3644 Group is provided with three 8-bit I/O ports, three 5-bit I/O ports, two 3-bit I/O
ports, and one 8-bit input-only port. Table 8.1 indicates the functions of each port.
Each port has of a port control register (PCR) that controls input and output, and a port data
register (PDR) for storing output data. Input or output can be assigned to individual bits.
See section 2.9.2, Notes on Bit Manipulation, for information on executing bit-manipulation
instructions to write data in PCR or PDR.
Block diagrams of each port are given in appendix C, I/O Port Block Diagrams.
Table 8.1 Port Functions
Port
Port 1
Port 2
Port 3
Port 5
Description
• 5-bit I/O port
• Input pull-up
MOS selectable
• 3-bit I/O port
• 3-bit I/O port
• Input pull-up
MOS selectable
• 8-bit I/O port
• Input pull-up
MOS
Pins
P17/IRQ3/TRGV
P16 to P15/
IRQ2 to IRQ1
P14/PWM
P10/TMOW
P22/TxD
P21/RxD
P20/SCK1
P32/SO1
P31/SI1
P30/SCK1
P57 /INT7
P56 /INT6/
TMIB
P55/INT5/
ADTRG
P54 to P50/
INT4 to INT0
Other Functions
Function Switching
Register
External interrupt 3, timer PMR1
V trigger input
External interrupts 2 and 1
14-bit PWM output
Timer A clock output
SCI3 data output
SCI3 data input
SCI3 clock input/output
SCI1 data output (SO1),
data input (SI1), clock
input/output (SCK1)
PMR1
PMR1
PMR7
SCR3
SCR3, SMR
PMR3
INT interrupt 7
INT interrupt 6
Timer B1 event input
INT interrupt 5
A/D converter external
trigger input
INT interrupts 4 to 0
Rev. 6.00 Sep 12, 2006 page 169 of 526
REJ09B0326-0600