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28.7
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 28.29.
Vcc power supply
Bypass
capacitor
10 µF
0.01 µF
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.
VCC
VSS
Figure 28.29 Connection of VCL Capacitor
Section 28 Electrical Characteristics
External capacitor
for internal step-down
power stabilization
One 0.1 µF /
0.47 µF or
two in parallel
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.
Rev. 1.00 May 09, 2008 Page 941 of 954
VCL
VSS
REJ09B0462-0100
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