mpc5125 Freescale Semiconductor, Inc, mpc5125 Datasheet - Page 41

• Manufacturer Part Number: mpc5125
• Description: Mpc5125 Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

4.1.5
Power dissipation of the MPC5125 is caused by three different components:
Table 10
dissipation due to the switching of the IO pins cannot be given in general, but must be calculated for each application case using
the following formula:
where N is the number of output pins switching in a group M, C is the capacitance per pin, V
the switching frequency, and P
MPC5125 device must not exceed this value, which would cause the maximum junction temperature to be exceeded.
Freescale Semiconductor
•
•
•
Dissipation of the internal or core digital logic (supplied by V
Dissipation of the analog circuitry (supplied by AV
Dissipation of the IO logic (supplied by V
NOTES:
1
2
details typical measured core and analog power dissipation figures for a range of operating modes. However, the
Typical core power is measured at V
Operational power is measured while running an entirely cache-resident program with floating-point
multiplication instructions in parallel with DDR write operation.
Operational
Deep-sleep
Hibernation
Operational
Deep-sleep
Operational
Deep-sleep
Power Dissipation
Sleep
Doze
Mode
Nap
3
3
3
4
2
PLL/OSC Power Supplies (AV
IOint
is the power consumed by the unloaded IO stage. The total power consumption of the
Unloaded I/O Power Supplies (V
P IO
MPC5125 Microcontroller Data Sheet, Rev. 3
=
P total
e300 = 400 MHz, CSB = 200 MHz
V
P IOint
DD_IO
180
Table 10. Power Dissipation
Core Power Supply (V
5
DD_core
RTC Power Supply (V
=
DD_IO_MEM
High-Performance
+
P core
= 1.4 V, T
∑
M
DD_SPLL
N
620
580
235
230
38
20
18
55
DD_SPLL
+
×
P analog
C
and V
J
×
= 25 °C.
, AV
VDD_IO
and AV
DD_IO
DD_IO
DD_core
DD
DD_CPLL
BAT
+
)
P IO
, V
V
)
)
DD_IO_MEM
DD_CPLL
2
)
DD_IO_MEM
1
×
, AV
40
1
f
DD_OSC_TMPS
Electrical and Thermal Characteristics
)
)
6
DD_IO
)
Unit
mW
mW
mW
mW
mW
mW
mW
mW
µW
5
µW
is the IO voltage swing, f is
SpecID
D5.10
D5.1
D5.3
D5.2
D5.4
D5.5
D5.6
D5.7
D5.8
D5.9
Eqn. 1
Eqn. 2
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