SH7125_08 Datasheet, PDF (748/774 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 21 Electrical Characteristics
21.6 Usage Note
21.6.1 Notes on Connecting V_CL Capacitor
This LSI includes an internal step-down circuit to automatically reduce the internal power supply
voltage to an appropriate level. Between this internal stepped-down power supply (V_CL pin) and
the V_SS pin, a capacitor (ranging from 0.1 to 0.47 µF) for stabilizing the internal voltage needs to
be connected. Connection of the external capacitor is shown in figure 21.17. The external
capacitor should be located near the pin. Do not apply any power supply voltage to the V_CL pin.
External power-supply
stabilizing capacitor
One capacitor ranging from 0.1 to 0.47 µF
V_CL
V_SS
V_SS
V_CL
One capacitor ranging from 0.1 to 0.47 µF
Note: Do not apply any power supply voltage to the VCL pin.
Use multilayer ceramic capacitors (one capacitor ranging
from 0.1 to 0.47 µF for each VCL pin), which should be
located near the pin.
Figure 21.17 Connection of V_CL Capacitor
Rev. 4.00 Jul. 25, 2008 Page 728 of 750
REJ09B0243-0400