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参数资料
| 型号： | A1280A-1CQ172E |
| 元件分类： | FPGA |
| 英文描述： | FPGA, 1232 CLBS, 8000 GATES, 60 MHz, CQFP172 |
| 封装： | CAVITY-UP, CERAMIC, QFP-172 |
| 文件页数： | 4/98页 |
| 文件大小： | 2005K |
| 代理商： | A1280A-1CQ172E |
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12
can be combined with frequency and voltage to represent
active power dissipation.
E qui v a l ent C apac i t ance
The power dissipated by a CMOS circuit can be expressed by
Equation 1:
Power (uW) = CEQ * VCC
2 * F
(1)
where:
Equivalent capacitance is calculated by measuring ICCactive
at a specified frequency and voltage for each circuit
component of interest. Measurements are made over a range
of frequencies at a fixed value of VCC. Equivalent capacitance
is frequency independent so that the results can be used over
a wide range of operating conditions. Equivalent capacitance
values are shown below.
CE Q Val ues f o r Act e l FP G A s
To calculate the active power dissipated from the complete
design, the switching frequency of each part of the logic must
be known. Equation 2 shows a piecewise linear summation
over all components that applies to all ACT 1, 1200XL,
3200DX, ACT 2, and ACT 3 devices. Since the ACT 1 family has
only one routed array clock, the terms labeled routed_Clk2,
dedicated_Clk, and IO_Clk do not apply. Similarly, the ACT 2
family has two routed array clocks, and the dedicated_Clk
and IO_Clk terms do not apply. For ACT 3 devices, all terms
will apply.
Power = VCC
2 * [(m * C
EQM* fm)modules + (n * CEQI* fn)inputs +
(p * (CEQO+ CL) * fp)outputs + 0.5 * (q1 * CEQCR * fq1)routed_Clk1
+ (r1 * fq1)routed_Clk1 + 0.5 * (q2 * CEQCR * fq2)routed_Clk2 +
(r2 * fq2)routed_Clk2 + 0.5 * (s1 * CEQCD * fs1)dedicated_Clk +
(s2 * CEQCI * fs2)IO_Clk](2)
where:
CEQ
= Equivalent capacitance in pF
VCC
= Power supply in volts (V)
F
= Switching frequency in MHz
ACT 3
1200XL
3200DX ACT 2 ACT 1
Modules (CEQM)
6.7
5.2
5.8
3.7
Input Buffers (CEQI)
7.2
11.6
12.9
22.1
Output Buffers (CEQO)
10.4
23.8
31.2
Routed Array Clock
Buffer Loads (CEQCR)
1.6
3.5
3.9
4.6
Dedicated Clock Buffer
Loads (CEQCD)
0.7
N/A
I/O Clock Buffer Loads
(CEQCI)
0.9
N/A
m
= Number of logic modules switching at fm
n
= Number of input buffers switching at fn
p
= Number of output buffers switching at fp
q1
= Number of clock loads on the first routed
array clock (all families)
q2
= Number of clock loads on the second routed
array clock (ACT 2, 1200XL, 3200DX, ACT 3
only)
r1
= Fixed capacitance due to first routed array
clock (all families)
r2
= Fixed capacitance due to second routed array
clock (ACT 2, 1200XL, 3200DX, ACT 3 only)
s1
= Fixed number of clock loads on the dedicated
array clock (ACT 3 only)
s2
= Fixed number of clock loads on the dedicated
I/O clock (ACT 3 only)
CEQM
= Equivalent capacitance of logic modules in pF
CEQI
= Equivalent capacitance of input buffers in pF
CEQO
= Equivalent capacitance of output buffers
in pF
CEQCR
= Equivalent capacitance of routed array clock
in pF
CEQCD
= Equivalent capacitance of dedicated array
clock in pF
CEQCI
= Equivalent capacitance of dedicated I/O clock
in pF
CL
= Output lead capacitance in pF
fm
= Average logic module switching rate in MHz
fn
= Average input buffer switching rate in MHz
fp
= Average output buffer switching rate in MHz
fq1
= Average first routed array clock rate in MHz
(all families)
fq2
= Average second routed array clock rate in
MHz (ACT 2, 1200XL, 3200DX, ACT 3 only)
fs1
= Average dedicated array clock rate in MHz
(ACT 3 only)
fs2
= Average dedicated I/O clock rate in MHz
(ACT 3 only)
相关PDF资料 |
PDF描述 |
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| A1460A-1CQ196E | FPGA, 848 CLBS, 6000 GATES, 100 MHz, CQFP196 |
| A1460A-1PG207E | FPGA, 848 CLBS, 6000 GATES, 100 MHz, CPGA207 |
| A1460A-CQ196E | FPGA, 848 CLBS, 6000 GATES, 85 MHz, CQFP196 |
| A1460A-PG207E | FPGA, 848 CLBS, 6000 GATES, 85 MHz, CPGA207 |
| A1280A-CQ172E | FPGA, 1232 CLBS, 8000 GATES, 41 MHz, CQFP172 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A1280A-1CQ172M | 制造商:Microsemi Corporation 功能描述:FPGA ACT 2 8K GATES 1232 CELLS 90MHZ 1.0UM 5V 172CQFP - Trays 制造商:Microsemi Corporation 功能描述:IC FPGA 140 I/O 172CQFP 制造商:Microsemi Corporation 功能描述:IC FPGA 8K GATES 172-CQFP MIL |
| A1280A-1CQ176B | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:ACT2 Family FPGAs |
| A1280A-1CQ176C | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:ACT2 Family FPGAs |
| A1280A-1CQ176I | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:ACT2 Family FPGAs |
| A1280A-1CQ176M | 制造商:ACTEL 制造商全称:Actel Corporation 功能描述:ACT2 Family FPGAs |
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