mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 223

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

A.1.7
This chapter describes the operating conditions of the device. Unless otherwise noted those conditions
apply to all the following data.
A.1.8
Power dissipation and thermal characteristics are closely related. The user must assure that the maximum
operating junction temperature is not exceeded. The average chip-junction temperature (T
obtained from:
T
T
P
4
The total power dissipation can be calculated from:
Freescale Semiconductor
1
2
Oscillator and Quartz frequency
Quartz overtone
Quartz frequency stability at T
Voltage difference VDDX to VDDR and VDDA
Voltage difference VSSX to VSSR and VSSA
I/O, Regulator and Analog Supply
Digital Logic Supply Voltage
Oscillator Supply Voltage
Operating Junction Temperature Range
Operating Ambient Temperature Range
A
D
J
JA
The device contains an internal voltage regulator to generate the logic and OSC supply out of the I/O supply.
ambient temperature T
= Junction Temperature [°C]
Refer to
= Ambient Temperature [°C]
= Total Chip Power Dissipation [W]
= Package Thermal Resistance [°C/W]
Section A.1.8, “Power Dissipation and Thermal
Operating Conditions
Power Dissipation and Thermal Characteristics
Refer to the temperature rating of the device (C, V, M) with regards to the
ambient temperature T
dissipation calculations refer to
Thermal
Rating
A
1
and device junction temperature T
Characteristics”.
1
J
2
T J
Table A-4. Operating Conditions
A
and the junction temperature T
=
MFR4200 Data Sheet, Rev. 0
T A
+
Section A.1.8, “Power Dissipation and
Symbol
V
D
D
NOTE
V
DDOSC
f
f
V
Characteristics” for more information about the relation between
P D 4 JA
VDDX
OSC
VSSX
STB
T
T
DD5
DD
J
J
J
.
x
-1500
2.97
2.25
2.25
Min
-0.1
-0.1
-40
-40
-
Fundamental Frequency
J
. For power
40.000
Typ
300
3.3
2.5
2.5
27
0
0
-
40.000
1500
Max
2.75
2.75
140
125
0.1
0.1
5.5
J
) in qC can be
Eqn. A-1
MHz
Unit
ppm
o
o
V
V
V
V
V
General
C
C
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