Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Sep 27, 2006 page 1118 of 1130
REJ09B0327-0400
C.10 Port A Block Diagrams
D
R
QD
PAnODR
C
Reset
R
Q
PAnDDR
C
Reset
Mode 2
EXPE
IOSE
WPAD
WPA
RPAO
RPA
A/D converter
Analog input
Key-sense
interrupt input
KMIMR n+8
PAn
WPAD: Write to PADDR
WPA: Write to PAODR
RPAO: Read PAODR
RPA: Read port A
Note: n = 0 or 1
Hardware
standby
Internal data bus
Internal address bus
Legend:
Figure C.34 Port A Block Diagram (Pins PA0, PA1)