Datasheet

Section 31 Electrical Characteristics
Rev. 2.00 Aug. 20, 2008 Page 1163 of 1198
REJ09B0403-0200
31.6 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 31.45.
External capacitor
for internal step-down
power stabilization
One 0.1 µF / 0.47 µF or
two in parallel
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.
VCLVCC
Vcc power supply
VSSVSS
0.01 µF
Bypass
capacitor
10 µF
Do not connect Vcc power supply to the VCL pin.
Always connect a capacitor for internal step-down powe
r
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.
Figure 31.46 Connecting Capacitors to VCC and VCL Pins