A1240A-1CQ256B ACTEL [Actel Corporation], A1240A-1CQ256B Datasheet - Page 13
A1240A-1CQ256B
Manufacturer Part Number
A1240A-1CQ256B
Description
HiRel FPGAs
Manufacturer
ACTEL [Actel Corporation]
Datasheet
1.A1240A-1CQ256B.pdf
(98 pages)
- Current page: 13 of 98
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Fix ed Capa cit anc e V alu es for
Act el FP GA s (pF)
Device Type
A1010B
A1020B
A1240A
A1280A
A1280XL
A1425A
A1460A
A14100A
A32100DX
A32200DX
Type
Logic modules (m)
Input switching (n)
Outputs switching (p)
First routed array clock loads (q
Second routed array clock loads (q
Load capacitance (C
Average logic module switching rate (f
Average input switching rate (f
Average output switching rate (f
Average first routed array clock rate (f
Average second routed array clock rate (f
Average dedicated array clock rate (f
Average dedicated I/O clock rate (f
L
)
routed_Clk1
178
230
134
168
168
165
195
41
69
75
r
1
n
)
1
p
)
)
s2
2
)
)
s1
q1
m
)
)
)
q2
routed_Clk2
)
134
168
168
165
195
178
230
n/a
n/a
75
r
ACT 3
80% of modules
# inputs/4
#outputs/4
40% of sequential
modules
40% of sequential
modules
35 pF
F/10
F/5
F/10
F/2
F/2
F
F
2
Fix ed Clo ck Loads ( s
De ter m in ing Av er age S wi tc hing Fr equ ency
To determine the switching frequency for a design, you must
have a detailed understanding of the data values input to the
circuit. The guidelines in the table below are meant to
represent worst-case scenarios so that they can be generally
used to predict the upper limits of power dissipation.
Device Type
A1425A
A1460A
A14100A
3200DX/ACT 2/1200XL
80% of modules
# inputs/4
#outputs/4
40% of sequential
modules
40% of sequential
modules
35 pF
F/10
F/5
F/10
F
F/2
n/a
n/a
Clock Loads on
Array Clock
Dedicated
1
160
432
697
s
/ s
1
2
— A CT 3 O nl y )
ACT 1
90% of modules
# inputs/4
#outputs/4
40% of modules
n/a
35 pF
F/10
F/5
F/10
F
n/a
n/a
n/a
Clock Loads on
H iR e l F PG A s
Dedicated
I/O Clock
100
168
228
s
2
13
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