Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Sep 27, 2006 page 1121 of 1130
REJ09B0327-0400
C.11 Port B Block Diagram
D
R
QD
PBnODR
C
Reset
(D0, D1)
(D0, D1)
R
Q
PBnDDR
C
Reset
EXPE
External
address write
ABW
WPBD
WPB
External address
read
RPBO
RPB
PBn
WPBD: Write to PBDDR
WPB: Write to PBODR
RPBO: Read PBODR
RPB: Read port B
Note: n = 0, 1
Internal data bus
Host interface
RESOBF3, 4
(Reset HIRQ3,
HIRQ4)
Hardware standby
Legend:
Figure C.37 Port B Block Diagram (Pins PB0 and PB1)