Panasonic MN101C77C - Manual (Page 175)

IV - 25
Chapter 4 I/O Ports
Port 5
R
D
L
Q
Reset
Write Read
R
D
L
Q
Reset
Write Read
D
L
Q
Write Read
Read
R
Reset
Pull-up resistor control
I/O direction control
Port output data
SC4AD1 register
SELI2C flag
Serial interface 4 clock output
Serial interface 4 clock input
Port input data
Data bus
0
1
P54
P5PLU4
P5DIR4
P5OUT4
P5IN4
Read
R
D
L
Q
Reset
Write
SC4ODC11
Nch open-drain control
M
U
X
Figure 4-5-6 Block Diagram (P54)