M32CSLASH8B datasheet(378/406 Pages) RENESAS

378 / 406 page

Under development

M32C/8B Group

25. Usage Notes

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 361 of 385

25.1.2

Power Supply Ripple

Stabilize supply voltage to meet the power supply standard listed in Table 25.2.

Table 25.2

Power Supply Ripple

Figure 25.2

Power Supply Fluctuation Timing

25.1.3

Noise

Use thick and shortest possible wiring to connect a bypass capacitor (0.1

μF or more) between VCC and VSS.

Symbol

Parameter

Standard

Unit

Min.

Typ.

Max.

f(ripple)

Power supply ripple tolerable frequency (VCC1)

kHz

Vp-p(ripple)

Power supply ripple voltage

fluctuation range

(VCC1 = 5 V)

0.5

(VCC1 = 3.3 V)

0.3

VCC(|

ΔV/ΔT|) Power supply ripple voltage

fluctuation rate

(VCC1 = 5 V)

0.3

V/ms

(VCC1 = 3.3 V)

0.3

V/ms

Vp-p(ripple)

f(ripple)

VCC1

f(ripple)

Power supply ripple tolerable frequency

(VCC1)

Vp-p(ripple)

Power supply ripple voltage fluctuation

range

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