HD64F3028F25 Datasheet, PDF (870/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

C.4 Port 4 Block Diagram
8-bit bus 16-bit bus
mode mode
Mode 6/7
Mode
1 to 5
Reset
R
Hardware
standby
RP4P
Q
D
P4 _n PCR
C
WP4P
Reset
R
Write to external
address
External bus
release
Q
D
P4 _nDDR
C
WP4D
Reset
R
P4n
Q
D
P4_n DR
C
WP4
RP4
Read external
address
WP4P: Write to P4PCR
RP4P: Read P4PCR
WP4D: Write to P4DDR
WP4: Write to port 4
RP4: Read port 4
n = 0 to 7
Figure C.4 Port 4 Block Diagram
Rev. 2.00, 09/03, page 838 of 890