A3P015-1FG144 ACTEL [Actel Corporation], A3P015-1FG144 Datasheet - Page 19

• Manufacturer Part Number: A3P015-1FG144
• Description: ProASIC3 Flash Family FPGAs
• Manufacturer: ACTEL [Actel Corporation]

Table 2-5 •
Package Type
Quad Flat No Lead
Very Thin Quad Flat Pack (VQFP)
Thin Quad Flat Pack (TQFP)
Plastic Quad Flat Pack (PQFP)
PQFP with embedded heatspreader
Fine Pitch Ball Grid Array (FBGA)
*
Maximum Power Allowed
This information applies to all ProASIC3 devices except the A3P1000. Detailed device/package thermal
information will be available in future revisions of the datasheet.
Thermal Characteristics
Introduction
The temperature variable in the Actel Designer software refers to the junction temperature, not
the ambient temperature. This is an important distinction because dynamic and static power
consumption cause the chip junction to be higher than the ambient temperature.
EQ 2-1
where:
T
P = Power dissipation
Package Thermal Characteristics
The device junction-to-case thermal resistivity is
resistivity is
maximum junction temperature is 100°C.
maximum power dissipation allowed for a 484-pin FBGA package at commercial temperature and
in still air.
Package Thermal Resistivities
A
ja
T = Temperature gradient between junction (silicon) and ambient T =
= Ambient Temperature
= Junction-to-ambient of the package.
T
J
= Junction Temperature = T + T
can be used to calculate junction temperature.
=
ja
. The thermal characteristics for
Max. junction temp. ( C) Max. ambient temp. ( C)
---------------------------------------------------------------------------------------------------------------------------------------- -
All devices
All devices
All devices
All devices
See note*
See note*
See note*
A3P1000
A3P1000
A3P1000
A3P030
A3P060
A3P125
A3P250
Device
A
ja
( C/W)
Pin Count
–
v1.3
132
132
132
132
100
144
208
208
144
256
484
144
256
484
ja
EQ 2-2
numbers are located in
ja
10.0
11.0
0.4
0.3
0.2
0.1
8.0
3.8
3.8
3.8
3.2
6.3
6.6
8.0
are shown for two air flow rates. The absolute
shows a sample calculation of the absolute
jc
jc
and the junction-to-ambient air thermal
Still Air 200 ft./min. 500 ft./min.
21.4
21.2
21.1
21.0
35.3
33.5
26.1
16.2
26.9
26.6
20.5
31.6
28.1
23.3
ProASIC3 DC and Switching Characteristics
=
100 C 70 C
------------------------------------- -
Table
16.8
16.6
16.5
16.4
29.4
28.0
22.5
13.3
22.9
22.8
17.0
26.2
24.4
19.0
20.5 C/W
ja
ja
2-5.
–
* P
=
15.3
15.0
14.9
14.8
27.1
25.7
20.8
11.9
21.5
21.5
15.9
24.2
22.7
16.7
1.463 W
·
EQ 2-1
EQ 2-2
Units
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
C/W
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