epf81188ari240-4h Altera Corporation, epf81188ari240-4h Datasheet - Page 51

• Manufacturer Part Number: epf81188ari240-4h
• Description: Programmable Logic Device Family
• Manufacturer: Altera Corporation

Power
Consumption
Altera Corporation
The supply power (P) for FLEX 8000 devices can be calculated with the
following equation:
P = P
Typical I
Table 15 on page 30. The P
load characteristics and switching frequency, can be calculated using the
guidelines given in
Devices). The I
the application logic. This value can be calculated based on the amount of
current that each LE typically consumes.
The following equation shows the general formula for calculating
I
The parameters in this equation are shown below:
f
N
tog
K
This calculation provides an I
with no output load. The actual I
operation because this measurement is sensitive to the actual pattern in
the device and the environmental operating conditions.
Figure 20
for several LE utilization values.
I
CCACTIVE
MAX
CC
Table 50. Values for Constant K
LC
AC TIVE
INT
5.0-V FLEX 8000 devices
3.3-V FLEX 8000 devices
= Maximum operating frequency in MHz
= Total number of logic cells used in the device
= Average percentage of logic cells toggling at each clock
= Constant, shown in
CCSTANDBY
+ P
shows the relationship between I
:
=
IO
CCACTIVE
K
= [(I
Device
FLEX 8000 Programmable Logic Device Family Data Sheet
f
CCSTANDBY
Application Note 74 (Evaluating Power for Altera
MAX
values are shown as I
value depends on the switching frequency and
N
IO
value, which depends on the device output
CC
tog
Table 50
+ I
estimate based on typical conditions
CC
CCACTIVE
LC
value should be verified during
--------------------------- -
MHz LE
CC0
CC
) V
A
in Table 11 on page 28 and
and operating frequency
CC
] + P
75
60
K
IO
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