HD64F3028F25 Datasheet, PDF (885/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

C.9 Port 9 Block Diagrams
P90
Hardware
standby
Reset
R
Q
D
P9 ₀ DDR
C
WP9D
Reset
R
Q
D
P9₀ DR
C
WP9
RP9
WP9D: Write to P9DDR
WP9: Write to port 9
RP9: Read port 9
Figure C.9 (a) Port 9 Block Diagram (Pin P9₀)
SCI
Output
enable
Serial
transmit
data
Guard
time
Rev. 2.00, 09/03, page 853 of 890