mfr4300 Freescale Semiconductor, Inc, mfr4300 Datasheet - Page 241

• Manufacturer Part Number: mfr4300
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

A.1.7
This section 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
Table A-4. Operating Conditions
A
T
and the junction temperature T
MFR4300 Data Sheet, Rev. 3
J
=
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
VDDX
OSC
VSSX
STB
T
T
DD5
DD
D
J
J
J
.
˜
4
JA
–1500
–0.1
–0.1
2.97
2.25
2.25
Min
–40
–40
—
Fundamental Frequency
J
. For power
40.000
Typ
300
+27
3.3
2.5
2.5
—
0
0
Electrical Characteristics
40.000
1500
+140
+125
Max
2.75
2.75
0.1
0.1
5.5
J
) in qC can be
Eqn. A-1
MHz
Unit
ppm
o
o
V
V
V
V
V
C
C
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