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M16C/64C Group
32.5.5
PLL Frequency Synthesizer
To use the PLL frequency synthesizer, stabilize the supply voltage within the acceptable range of power
supply ripple.
Table 32.4
Acceptable Range of Power Supply Ripple
Symbol
f
Power supply ripple allowable frequency (VCC1)
(ripple)
V
Power supply ripple allowable
P-P(ripple)
amplitude voltage
CC(| Δ V / Δ T|)
V
Power supply ripple rising/falling
gradient
f(ripple)
Power supply ripple allowable
(
frequency
VCC1
Vp-p(ripple)
Power supply ripple allowable
amplitude voltage
Figure 32.8
Voltage Fluctuation Timing
R01UH0092EJ0110 Rev.1.10
Jul 31, 2012
Parameter
)
VCC1
Standard
Min.
(VCC1 = 5 V)
(VCC1 = 3 V)
(VCC1 = 5 V)
(VCC1 = 3 V)
f
(ripple)
32. Usage Notes
Unit
Typ.
Max.
10
kHz
0.5
V
0.3
V
0.3
V/ms
0.3
V/ms
V
p-p(ripple)
Page 767 of 807
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