S3F80P5_UM_ REV1.00 PRODUCT OVERVIEW
PIN CIRCUITS (Continued)
V
DD
Pull-up
Resistor
(67k
Ω
-Typ)
V
DD
V
SS
Noise
Filter
INPUT/OUTPUT
Pull-up
Enable
Data
Output Disable
Normal
Input
Open-Drain
Figure 1-4. Pin Circuit Type 2 (Port 1)
1-7