General Parameters
Table 4. Recommended Operating Conditions
1
Recommended Value
Characteristic
Symbol
1000N MHz
1267N MHz
3
Revision
Level C
1.1 V
± 50 mV
1.1 V
± 50 mV
–40 to 105
1267N MHz
3
Revision
Level D
1.05 V
± 50 mV
1.05 V
± 50 mV
–40 to 105
Unit
1400N
MHz
3
1700L MHz
Notes
Core supply voltage
PLL supply voltage
Die-junction temperature
V
DD
AV
DD
T
j
1.0 V
± 50 mV
1.0 V
± 50 mV
–40 to 105
1.15 V
± 50 mV
1.15 V
± 50 mV
–40 to 105
1.3 V
+20/-50 mV
1.3 V
+20/-50 mV
–40 to 105
V
V
•C
C
2
Notes:
1. These are the recommended and tested operating conditions. Some speed grades in addition support voltage derating; see
Proper device operation outside of these conditions and those specified in
is not guaranteed.
2. This voltage is the input to the filter discussed in
Section 9.2.2, “PLL Power Supply Filtering,”
in the hardware specifications
and not necessarily the voltage at the AV
DD
pin, which may be reduced from V
DD
by the filter.
3. V
DD
and AV
DD
may be reduced in order to reduce power consumption if further maximum core frequency constraints are
observed. See
for specific information.
provides the power consumption for the MPC7448 part numbers described by this document; see
for more information. The
MPC7448
RISC Microprocessor Hardware Specifications
presents guidelines on the use of these parameters for
system design. For information on power consumption when dynamic frequency switching is enabled, see
Section 9.8.5, “Dynamic Frequency Switching (DFS),”
in the hardware specifications.
The power consumptions provided in
represent the power consumption of each speed grade when
operated at the rated maximum core frequency (see
Freescale sorts devices by power as well as
by core frequency, and power limits for each speed grade are independent of each other. Each device is
tested at its maximum core frequency only. (Note that Deep Sleep Mode power consumption is
independent of clock frequency.) Operating a device at a frequency lower than its rated maximum is fully
supported provided the clock frequencies are within the specifications given in
and a device
operated below its rated maximum will have lower power consumption. However, inferences should not
be made about a device’s power consumption based on the power specifications of another (lower) speed
grade. For example, a 1400 MHz device operated at 1267 MHz will not exhibit the same power
consumption as a 1267 MHz device operated at 1267 MHz.
NOTE
The power consumption information in this table applies when the device
operates at the nominal core voltage indicated in
For power
consumption at derated core voltage conditions, see
MPC7448 Hardware Specifications Addendum for the MC7448Txxnnnnmx Series, Rev. 2
Freescale Semiconductor
3