1115
R
P35DDR
C
Q
D
Reset
Internal data bus
WDDR3
Reset
WDR3
R
C
Q
D
P35
RDR3
RODR3
RPOR3
SCI module
IIC0 module
SCL0 output
SCL0 input
IIC0 output enable
IRQ5 interrupt input
Interrupt controller
Serial clock output
enable
Serial clock output
Serial clock input
enable
P35DR
Reset
WODR3
R
C
Q
D
P35ODR
*
2
*
3
*
1
Serial clock input
Notes: 1. Priority order: IIC output > Serial clock output > DR output
2. Output enable signal
3. Open drain control signal
Legend
WDDR3
WDR3
WODR3
RDR3
RPOR3
RODR3
: Write to P3DDR
: Write to P3DR
: Write to P3ODR
: Read P3DR
: Read port 3
: Read P3ODR
Figure C-2 (f) Port 3 Block Diagram (Pin P35)