AFS250-FGG256 Actel, AFS250-FGG256 Datasheet - Page 163
AFS250-FGG256
Manufacturer Part Number
AFS250-FGG256
Description
FPGA - Field Programmable Gate Array 250K System Gates
Manufacturer
Actel
Datasheet
1.AFS600-PQG208.pdf
(330 pages)
Specifications of AFS250-FGG256
Processor Series
AFS250
Core
IP Core
Maximum Operating Frequency
1098.9 MHz
Number Of Programmable I/os
114
Data Ram Size
36864
Supply Voltage (max)
1.575 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Development Tools By Supplier
AFS-Eval-Kit, AFS-BRD600, FlashPro 3, FlashPro Lite, Silicon-Explorer II, Silicon-Sculptor 3, SI-EX-TCA
Mounting Style
SMD/SMT
Supply Voltage (min)
1.425 V
Number Of Gates
250 K
Package / Case
FPBGA-256
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Price
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Temporary overshoots are allowed according to
Figure 2-101 • Solution 1
Solution 2
The board-level design must ensure that the reflected waveform at the pad does not exceed limits
provided in
This scheme will also work for a 3.3 V PCI/PCI-X configuration, but the internal diode should not be used
for clamping, and the voltage must be limited by the external resistors and Zener, as shown in
102. Relying on the diode clamping would create an excessive pad DC voltage of 3.3 V + 0.7 V = 4 V.
Figure 2-102 • Solution 2
Table 3-4 on page
5.5 V
3-4. This is a long-term reliability requirement.
Zener 3.3 V diode, LVCMOS 3.3 V I/Os
5.5 V
Rext1
Zener
3.3 V
Off-Chip
Requires one board resistor, one
Off-Chip
Rext1
Rext2
Requires two board resistors,
Solution 2
R e v i s i o n 1
LVCMOS 3.3 V I/Os
Solution 1
Table 3-4 on page
On-Chip
On-Chip
Fusion I/O Input
Fusion I/O Input
Actel Fusion Family of Mixed Signal FPGAs
3-4.
3.3 V
3.3 V
Figure 2-
2- 147
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