MPC5644BCAMMJ1 datasheet(65/116 Pages) NXP

65 / 116 page

Electrical Characteristics

MPC5646C Microcontroller DataSheet, Rev. 7

NXP Semiconductors

Figure 11. Fast external crystal oscillator (4 to 40 MHz) electrical characteristics

Table 34. Crystal description

Nominal

frequency

(MHz)

NDK crystal

reference

Crystal

equivalent

series

resistance

ESR

Crystal

motional

capacitance

(Cm) fF

Crystal

motional

inductance

(Lm) mH

Load on

xtalin/xtalout

C1 = C2

(pF)1

1 The values specified for C1 and C2 are the same as used in simulations. It should be ensured that the testing

includes all the parasitics (from the board, probe, crystal, etc.) as the AC / transient behavior depends upon them.

Shunt

capacitance

between

xtalout

and xtalin

C02 (pF)

2 The value of C0 specified here includes 2 pF additional capacitance for parasitics (to be seen with bond-pads,

package, etc.).

NX8045GB

300

2.68

591.0

2.93

NX5032GA

3002.46

160.717

3.01

150

2.93

86.6

2.91

120

3.11

56.5

2.93

120

3.90

25.3

3.00

NX5032GA

6.18

2.56

3.49

Table 35. Fast external crystal oscillator (4 to 40 MHz) electrical characteristics

Symbol

Parameter

Conditions1

Value2

Unit

Min

Typ

Max

fFXOSC

SR — Fast external crystal

oscillator frequency

—

4.0

—

40.0

MHz

gmFXOSC

CC C Fast external crystal

oscillator

transconductance

VDD = 3.3 V ± 10%

—203

mA/V

VDD = 5.0 V ± 10%

—203

VFXOSCOP

TMXOSCSU

VXTAL

VFXOSC

valid internal clock

90%

10%

1/fMXOSC

S_MTRANS bit (ME_GS register)

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