RM7965A-900UI 900 MHz 64-bit Microprocessor Data Sheet
13.2 Power Requirements
Table 29 VccINT Power Requirements
Conditions
900 MHz
Parameter
Typ
Thermal Max Units
Icc Max
2.6
—
—
3.7
—
3.65
1.46
—
A
(Tcase = 85°C)
900 MHz
Icc Wait
1.0
A
(Tcase = 50°C)
900 MHz
Total Power (Max) 3.5
Total Power (Wait) 1.37
W
W
(Tcase = 85°C)
900 MHz
—
(Tcase = 50°C)
Notes:
1. Outputs loaded with 30 pF (if not otherwise specified), and a normal amount of traffic or signal activity.
2. Power values are calculated using the formula:
Power = ∑i(VDD x IDD)
Where i denotes all the various power supplies on the device, VDD is the voltage for supply i in
accordance with the condition, and IDD is the current for supply i.
3. I/O supply power is application-dependant, but typically <20% of VccInt. During WAIT mode, I/O
power supply should draw negligible current unless resistively loaded.
Table 30 Conditions for Power Requirements
Typical
Power For Thermal
Calculations
Maximum Current
Nominal
Nominal +2 sigmas of process
variation*
Nominal +6 sigmas of process
variation
Process
Nominal Vdd
Maximum Operating Vdd
Maximum Vdd
Voltage
Note
* The power number for nominal process +2 sigma of process variation is recommended for thermal
calculations as it will be the highest power dissipation of almost all parts in almost all applications. The
current number for nominal +6 sigma of process variation is recommended for power supply design
and is a true worst case.
13.3 Typical Power Consumption
Power consumption in an end application depends on many application-specific factors, such as
the characteristics of the code being executed, operating temperature of the CPU, and loads
being driven. The power consumption in an actual application can be substantially lower than
the maximum guaranteed specification shown.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2100294, Issue 2
62
PMC [ PMC-SIERRA, INC ]
