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SPC56EC74L7 Scheda tecnica(PDF) 75 Page - STMicroelectronics

Il numero della parte SPC56EC74L7
Spiegazioni elettronici  32-bit MCU family built on the Power Architecture® for automotive body electronics applications
PDF  118 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
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SPC56EC74L7 Scheda tecnica(HTML) 75 Page - STMicroelectronics

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SPC564Bxx - SPC56ECxx
Electrical Characteristics
Doc ID 17478 Rev 4
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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
Ω
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)
4
NX8045GB
300
2.68
591.0
21
2.93
8
NX5032GA
300
2.46
160.7
17
3.01
10
150
2.93
86.6
15
2.91
12
120
3.11
56.5
15
2.93
16
120
3.90
25.3
10
3.00
40
NX5032GA
50
6.18
2.56
8
3.49
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.
2.
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)
1
0
Table 36.
Fast external crystal oscillator (4 to 40 MHz) electrical characteristics
Symbol
C
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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