Usage Notes; Figure 26.29 Connection Of Vcl Capacitor - Renesas H8S Series Hardware Manual

26.5

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 26.29.
Vcc power supply
Bypass
capacitor
0.01 µF
10 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 26.29 Connection of VCL Capacitor

Section 26 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. 3.00 Jul. 14, 2005 Page 973 of 986
VCL
VSS
REJ09B0098-0300