HD6473847RHV Datasheet, PDF (211/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 8 I/O Ports
Section 8 I/O Ports
This LSI is provided with three 8-bit I/O ports, one 7-bit I/O port, one 4-bit I/O port, one 3-bit I/O
port, one 1-bit I/O port, one 4-bit input-only port, one 1-bit input-only port, and one 6-bit output-
only port.
Each port is configured by the port control register (PCR) that controls input and output, and the
port data register (PDR) that stores output data. Input or output can be assigned to individual bits.
Ports 5, 6, 7, 8, and A are also used as liquid crystal display segment and common pins, selectable
in 4-bit units.
See section 2.9.4, Bit Manipulation Instructions, for information on executing bit-manipulation
instructions to write data in PCR or PDR. Block diagrams of each port are given in Appendix B,
I/O Port Block Diagrams. Table 8.1 lists the functions of each port.
Table 8.1 Port Functions
Port
Port 3
Port 4
Port 5
Port 6
Port 7
Description
• 7-bit I/O port
• Input pull-up MOS option
• Large-current port^*1
• 1-bit input-only port
• 3-bit I/O port
• 8-bit I/O port
• Input pull-up MOS option
• 8-bit I/O port
• Input pull-up MOS option
• 8-bit I/O port
Pins
P37/AEVL
P36/AEVH
P35
P34
P33
P32/TMOFH
P31/TMOFL
P43/IRQ0
P42/TXD32
P41/RXD32
P40/SCK32
P57 to P50/
WKP7 to
WKP0/
SEG8 to
SEG1
P67 to P60/
SEG16 to
SEG9
P77 to P70/
SEG24 to
SEG17
Other Functions
Function
Switching
Registers
Asynchronous event
PMR3
counter event inputs AEVL,
AEVH
Timer F output compare
output
PMR3
External interrupt 0
PMR2
SCI3 data output (TXD32), SCR3
data input (RXD32), clock SMR
input/output (SCK32)
Wakeup input (WKP7 to
WKP0), segment output
(SEG8 to SEG1)
PMR5
LPCR
Segment output (SEG16 to LPCR
SEG9)
Segment output (SEG24 to LPCR
SEG17)
Rev. 7.00 Mar. 08, 2010 Page 179 of 510
REJ09B0024-0700