M32C8A Datasheet, PDF (349/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

M32C/8A Group
24. Usage Notes
24.1.2 Power Supply Ripple
Stabilize supply voltage to meet the power supply standard listed in Table 24.2.
Table 24.2 Power Supply Ripple
Symbol
Parameter
f(ripple)
Power supply ripple tolerable
frequency (VCC1)
Vp-p(ripple)
Power supply ripple voltage
fluctuation range
VCC(|ΔV/ΔT|) Power supply ripple voltage
fluctuation rate
(VCC1 = 5 V)
(VCC1 = 3.3 V)
(VCC1 = 5 V)
(VCC1 = 3.3 V)
(VCC1 = 5 V)
(VCC1 = 3.3 V)
Standard
Min.
Typ.
Max.
10
100
0.5
0.2
1
0.1
Unit
kHz
Hz
V
V
V/ms
V/ms
f(ripple)
Power supply ripple tolerable frequency
(VCC1)
Vp-p(ripple)
Power supply ripple voltage fluctuation
range
VCC1
f(ripple)
Vp-p(ripple)
Figure 24.2 Power Supply Fluctuation Timing
24.1.3 Noise
Use thick and shortest possible wiring to connect a bypass capacitor (0.1 μF or more) between VCC and VSS.
Rev.1.00 Jul 15, 2007 Page 332 of 352
REJ09B0385-0100