Datasheet

Appendix C I/O Port Block Diagrams
Rev.6.00 Sep. 27, 2007 Page 1226 of 1268
REJ09B0220-0600
C.3 Port 3
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
P3nDR
Reset
WODR3
R
C
QD
P3nODR
*1
*2
Legend:
WDDR3: Write to P3DDR
WDR3: Write to P3DR
WODR3: Write to P3ODR
RDR3: Read P3DR
RPOR3: Read port 3
RODR3: Read P3ODR
Notes: n = 0 or 1
1. Output enable signal
2. Open drain control signal
Figure C.3 (a) Port 3 Block Diagram (Pins P3
0
and P3
1
)