Datasheet

Rev.6.00 Oct.28.2004 page 975 of 1016
REJ09B0138-0600H
C.3 Port 3 Block Diagram
R
P3nDDR
C
QD
Reset
WDDR3
Reset
WDR3
R
C
QD
P3
n
RDR3
RODR3
RPOR3
Internal data bus
SCI module
Serial transmit enable
Serial transmit data
WDDR3:
WDR3:
WODR3:
RDR3:
RPOR3:
RODR3:
n = 0 or 1
Notes: 1. Output enable signal
2. Open drain control signal
Write to P3DDR
Write to P3DR
Write to P3ODR
Read P3DR
Read port 3
Read P3ODR
P3nDR
Reset
WODR3
R
C
QD
P3nODR
*
1
*
2
Legend:
Figure C-3 (a) Port 3 Block Diagram (Pins P3
0
and P3
1
)