3069RF-ZTAT Datasheet, PDF (793/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

21.5 Usage Notes
Insert a capacitor (C1) between the V_CL and V_SS pins to stabilize the internal step-down voltage and
a voltage stabilizing capacitor (CB) between the V_CC and V_SS pins. Figure 21.30 shows a wiring
example.
H8/3069R
V_CL
V_SS
V_CC
V_SS
C1*¹
CB*²
Notes: 1. For C1, which is used to stabilize the internal step-down voltage, use a 0.1 µF laminated
ceramic capacitor and place it close to the pins.
2. For CB, the voltage stabilizing capacitor, use a laminated ceramic capacitor rated at
0.1 µF to 0.47 µF (or five 0.1 µF capacitors connected in parallel) and place it close to
the pins.
Figure 21.30 Method of Connecting Capacitors to V_CL and V_CC Pins
Rev. 5.0, 09/04, page 771 of 978