M16C28 Datasheet, PDF (372/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/28 Group (M16C/28, M16C/28B)
20. Precautions
20.2 Clock Generation Circuit
20.2.1 PLL Frequency Synthesizer
Stabilize supply voltage so that the standard of the power supply ripple is met.
Symbol
f(ripple)
Vp-p(ripple)
VCC(|DV/DT|)
Parameter
Power supply ripple allowable frequency(VCC)
Power supply ripple allowable amplitude
voltage
(VCC=5V)
(VCC=3V)
Power supply ripple rising/falling gradient
(VCC=5V)
(VCC=3V)
Standard
Min.
Typ.
Max.
Unit
10
kHz
0.5
V
0.3
V
0.3
V/ms
0.3
V/ms
f(ripple)
Power supply ripple allowable frequency
(VCC)
Vp-p(ripple)
Power supply ripple allowable amplitude
voltage
VCC
Figure 20.2 Voltage Fluctuation Timing
f(ripple)
Vp-p(ripple)
Rev. 2.00 Jan. 31, 2007 ^{page 352} of 385
REJ09B0047-0200