Datasheet

Section 28 Electrical Characteristics
Rev. 2.00 Sep. 28, 2009 Page 981 of 994
REJ09B0452-0200
28.6 Usage Notes
It is necessary to connect a bypass capacitor between the VCC pin and VSS pin, and a capacitor
between the VCL pin and VSS pin for stable internal step-down power. An example of connection
is shown in figure 28.30.
Do not connect Vcc power supply to the VCL pin.
Always connect a capacitor for internal step-down power
stabilization. Use one or two ceramic multilayer capacitor(s)
(0.1 μF / 0.47 μF: connect in parallel when using two)
and place it (them) near the pin.
It is recommended that a bypass capacitor be connected
to the VCC pin. (The values are reference values.)
When connecting, place a bypass capacitor near the pin.
External capacitor
for internal step-down
power stabilization
One 0.1 μF /
0.47 μF or
two in parallel
VCLVCC
Vcc power supply
VSSVSS
0.01 µF
Bypass
capacitor
10 µF
Figure 28.30 Connection of VCC and VCL Capacitors