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參數(shù)資料
| 型號： | FLEX8000 |
| 廠商： | Altera Corporation |
| 英文描述： | PROGRAMMABLE LOGIC DEVICES FAMILY |
| 中文描述： | 系列可編程邏輯元件 |
| 文件頁數(shù)： | 50/61頁 |
| 文件大?。?/td> | 979K |
| 代理商： | FLEX8000 |
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50
Altera Corporation
FLEX 8000 Programmable Logic Device Family Data Sheet
Power
Consumption
The supply power for FLEX 8000 devices, P, can be calculated with the
following equation:
P = P
INT
+ P
IO
= [(I
CC
STANDBY
+ I
CC
ACTIVE
)
×
V
CC
] + P
IO
Typical I
CC
STANDBY
values are shown as I
CC0
in the “FLEX 8000 5.0-V
Device DC Operating Conditions” table on
page 28
and the “FLEX 8000
3.3-V Device DC Operating Conditions” table on
page 29
. The P
IO
value,
which depends on the device output load characteristics and switching
frequency, can be calculated using the guidelines given in
Application Note 74 (Evaluating Power for Altera Devices)
. The I
CC
value depends on the switching frequency and 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
CC
ACTIVE
:
The parameters in this equation are shown below:
f
MAX
N
tog
LC
K
= 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
Table 13
This calculation provides an I
CC
estimate based on typical conditions
with no output load. The actual I
CC
value should be verified during
operation because this measurement is sensitive to the actual pattern in
the device and the environmental operating conditions.
Figure 20
shows the relationship between I
CC
and operating frequency
for several LE utilization values.
I
CC
ACTIVE
K
f
MAX
N
tog
LC
MHz
LE
×
---------------------------
×
×
×
×
=
Table 13. Values for Constant K
Device
K
5.0-V FLEX 8000 devices
3.3-V FLEX 8000 devices
75
60
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FLEX8000_1 | 制造商:ALTERA 制造商全稱:Altera Corporation 功能描述:Programmable Logic Device Family |
| FLEXB-107/0.127 | 制造商:OKI Electric Cable 功能描述: |
| FLEXB-147/0.127 | 制造商:OKI Electric Cable 功能描述: |
| FLEXB-207/0.127 | 制造商:OKI Electric Cable 功能描述: |
| FLEX-B2100-7/0.1 | 制造商:YAMAICHI 制造商全稱:Yamaichi Electronics Co., Ltd. 功能描述:25MIL (0.635mm) OKIFLEX-B&S Type (150V, 105°C) |
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