Port 4 Block Diagram - Renesas H8/3067 Series User Manual

Appendix C I/O Port Block Diagrams
C.4

Port 4 Block Diagram

P4
n
WP4P: Write to P4PCR
RP4P: Read P4PCR
WP4D: Write to P4DDR
WP4: Write to port 4
RP4: Read port 4
n = 0 to 7
Rev. 4.00 Jan 26, 2006 page 882 of 938
REJ09B0276-0400
8-bit bus 16-bit bus
mode mode
Mode
Mode 6/7
1 to 5
Hardware
standby
Write to external
address
External bus
release
Read external
address
Figure C.4 Port 4 Block Diagram
Reset
R
Q D
P4 PCR
n
C
RP4P
WP4P
Reset
R
Q D
P4 DDR
n
C
WP4D
Reset
R
Q D
P4 DR
n
C
WP4
RP4