Renesas H8 Series

Appendix C I/O Port Block Diagrams
Rev. 7.00 Mar 10, 2005 page 616 of 652
REJ09B0042-0700
Appendix C I/O Port Block Diagrams
C.1 Block Diagrams of Port 1
P1
n
V
CC
V
CC
PUCR1
n
PMR1
n
PDR1
n
PCR1
n
Internal data bus
SBY (low level during
reset and in standby
mode)
V
SS
IRQ
m
PDR1:
PCR1:
PMR1:
PUCR1:
n = 7 and 4
m = 4 and 3
Port data register 1
Port control register 1
Port mode register 1
Port pull-up control register 1
Figure C.1(a) Port 1 Block Diagram (Pins P1
7
and P1
4
)