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MPC5644B Datasheet(PDF) 66 Page - Freescale Semiconductor, Inc

Part # MPC5644B
Description  Microcontroller 64 KB on-chip data flash memory to support EEPROM emulation
PDF  114 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC5644B Datasheet(HTML) 66 Page - Freescale Semiconductor, Inc

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MPC5646C Microcontroller Data Sheet, Rev. 3
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
66
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.).
4
NX8045GB
300
2.68
591.0
21
2.93
8
NX5032GA
3002.46
160.717
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
Table 35. Fast external crystal oscillator (4 to 40 MHz) electrical characteristics
Symbol
C
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%
8.699
13.159
15.846
mA/V
VDD = 5.0 V ± 10%
9.440
13.159
16.859
VFXOSCOP
TMXOSCSU
VXTAL
VFXOSC
valid internal clock
90%
10%
1/fMXOSC
S_MTRANS bit (ME_GS register)
1
0



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