H83024 Datasheet, PDF (804/841 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Appendix C I/O Port Block Diagrams
Modes 6/7
SSOE
Software standby
External bus released
Hardware standby
Reset
R
Q
D
P8 _n DDR
C
WP8D
Reset
Modes 6/7
R
P8 _n
Q
D
Modes 1 to 5
P8_n DR
C
WP8
Bus controller
CS ₂
CS ₃
output
RP8
WP8D: Write to P8DDR
WP8: Write to port 8
RP8: Read port 8
SSOE: Software standby output port enable
n = 1, 2
Figure C.8 (b) Port 8 Block Diagram (Pins P8₁ and P8₂)
Interrupt
controller
IRQ ₁
IRQ₂ input
Rev. 2.00 Sep 20, 2005 page 766 of 800
REJ09B0260-0200