hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 239

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

8.1
The H8/3847R Group, H8/3847S Group and H8/38347 Group are provided with eight 8-bit I/O
ports, one 4-bit I/O port, one 3-bit I/O port, one 8-bit input-only port, one 4-bit input-only port,
and one 1-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.
Ports 5, 6, 7, 8, 9, and A are also used as liquid crystal display segment and common pins,
selectable in 8-bit units.
Block diagrams of each port are given in Appendix C, I/O Port Block Diagrams
Table 8.1
Port
Port 1
Port 2
Description
• 8-bit I/O port
• MOS input pull-up
• 8-bit I/O port
• Open-drain output
• Large-current port
option
option
(H8/3847R Group,
H8/38347 Group
and H8/38447
Group)
Overview
Port Functions
Pins
P1
IRQ
P1
P1
P1
TMOFH, TMOFL
P1
P2
P2
P2
P2
7
4
3
2
0
0
1
2
7
Section 8 I/O Ports
/IRQ
/TMIG
, P1
/TMOW
/SCK
/SI
/SO
1
to P1
to P2
/TMIF, TMIC
1
1
1
4
/
1
/ADTRG External interrupt 4 and A/D
5
3
/IRQ
3
to
Other Functions
External interrupts 3 to 1
Timer event interrupts
TMIF, TMIC
converter external trigger
Timer G input capture input
Timer F output compare output
Timer A clock output
SCI1 data output (SO
(SI
None
1
), clock input/output (SCK
Rev. 6.00 Aug 04, 2006 page 203 of 680
1
), data input
Section 8 I/O Ports
1
)
REJ09B0145-0600
Function
Switching
Registers
PMR1,
TCRF,
TMC
PMR1,
AMR
PMR1
PMR1
PMR1
PMR2