Panasonic MN101L Series

Chapter 1
Overview
I - 36 Cautions for Circuit Setup
1.6.2 Unused Pins
 Unused Pin (only for output)
Unconnect the unused output pin.
Figure:1.6.1 Unused Pin (only for output)
 Unused Pin (only for input)
Pull-up (or down) the unused input pins with the resistor, the value of which is typically between 10 kΩ and 100
kΩ.
When the input voltage level is unstable, Pch transistor and Nch transistor of input inverter are on, and through
current goes to the input circuit. That increases current consumption and becomes noise sources to the internal
power supply.
Figure:1.6.2 Unused Pin (only for input)
Figure:1.6.3 Structure and Characteristics of Input Inverter
OPEN
Output
Pull-up
resistor
Input
Input pin
Input
Input pin
Pull-down
resistor
Input
Input Pin
Characteristics of Input Inverter
Structure of Input Inverter
Pch
Nch
3
0 Input voltage
(V
DD30=3 V)
Current
Through Current