SPC56EC74L7 datasheet(75/118 Pages) STMICROELECTRONICS

номер детали	SPC56EC74L7

подробное описание детали	32-bit MCU family built on the Power Architecture® for automotive body electronics applications

PDF	118 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

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75 / 118 page

SPC564Bxx - SPC56ECxx

Electrical Characteristics

Doc ID 17478 Rev 4

75/118

Note:

XTAL/EXTAL must not be directly used to drive external circuits.

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

Table 35.

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)

Shunt

capacitance

between

xtalout

and xtalin

C0(2) (pF)

NX8045GB

300

2.68

591.0

2.93

NX5032GA

300

2.46

160.7

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

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.

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

etc.).

VFXOSCOP

TMXOSCSU

VXTAL

VFXOSC

valid internal clock

90%

10%

1/fMXOSC

S_MTRANS bit (ME_GS register)

Table 36.

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

Symbol

Parameter

Conditions(1)

Value(2)

Unit

Min

Typ

Max

fFXOSC

SR —

Fast external crystal

oscillator frequency

—4.0

—

40.0

MHz

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