Panasonic MN101C77C - Manual (Page 50)

Chapter 1 Overview
I - 32 Precautions
1-6-4 Power Supply Circuit
„ Cautions for Setting Power Supply Circuit
The CMOS logic microcontroller is high speed and high density. So, the power circuit should be de-
signed, taking into consideration of AC line noise, ripple caused by LED driver. Figure 1-6-6 shows an
example for emitter follower type power supply circuit.
Figure 1-6-6 An Example for Emitter follower type Power Supply Circuit
V SS
Microcontroller
V DD
+
Set condensors for noise-filter near
microcontroller power pins.
For Noise-filter
LED port LED
„ An example for Emitter Follower Type Power Supply Circuit