HD64F3048VTF8 Datasheet, PDF (876/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

Appendix C I/O Port Block Diagrams
Reset
R
Q
D
P8 _n DDR
C
WP8D
Reset
Mode 7
R
P8 _n
Q
D
Mode 1 to 6
P8_n DR
C
WP8
Bus controller
CS ₁
CS ₂
CS ₃
output
RP8
Legend:
WP8D Write to P8DDR
WP8: Write to port 8
RP8: Read port 8
Note: n = 1 to 3
Figure C.8 (b) Port 8 Block Diagram (Pins P8₁ to P8₃)
Interrupt
controller
IRQ ₁
IRQ ₂
IRQ₃ input
Rev. 3.00 Sep 27, 2006 page 848 of 872
REJ09B0325-0300