XC3S50A Xilinx Corp., XC3S50A Datasheet - Page 38

• Manufacturer Part Number: XC3S50A
• Description: Spartan-3a Fpga Family Data Sheet
• Manufacturer: Xilinx Corp.

DC and Switching Characteristics
Table 28: Recommended Number of Simultaneously
Switching Outputs per V
38
LVCMOS25
LVCMOS18
Signal Standard
(IOSTANDARD)
QuietIO
QuietIO
Slow
Slow
Fast
Fast
12
16
24
12
16
24
12
16
24
12
16
12
16
12
16
2
4
6
8
2
4
6
8
2
4
6
8
2
4
6
8
2
4
6
8
2
4
6
8
CCO
Bottom
(Banks
Top,
0,2)
16
10
12
10
36
30
24
20
12
13
13
30
24
20
16
8
7
6
–
–
8
6
3
–
–
–
–
8
8
7
–
–
8
7
4
–
–
–
–
-GND Pair (V
TQ144
(Banks
Package Type
Right
Left,
1,3)
16
10
12
10
36
30
24
20
12
12
13
13
30
24
20
16
12
12
8
7
6
6
5
8
6
3
3
2
8
8
8
7
5
5
8
7
4
4
3
Bottom
CCAUX
FG400, FG484,
FT256, FG320,
(Banks
Top,
0,2)
76
46
33
24
18
18
14
76
60
48
36
36
64
34
22
18
18
64
64
48
36
–
–
6
6
3
–
–
–
–
–
–
9
7
4
–
–
–
–
FG676
=3.3V)
(Banks
Right
Left,
1,3)
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76
46
33
24
18
11
18
14
76
60
48
36
36
36
64
34
22
18
13
10
18
64
64
48
36
36
24
7
6
6
3
3
2
8
9
7
4
4
3
Table 28: Recommended Number of Simultaneously
Switching Outputs per V
LVCMOS15
LVCMOS12
PCI33_3
PCI66_3
PCIX
HSTL_I
HSTL_III
HSTL_I_18
HSTL_II_18
HSTL_III_18
SSTL18_I
SSTL18_II
SSTL2_I
SSTL2_II
SSTL3_I
SSTL3_II
Signal Standard
(IOSTANDARD)
QuietIO
QuietIO
Slow
Slow
Fast
Fast
12
12
12
2
4
6
8
2
4
6
8
2
4
6
8
2
4
6
2
4
6
2
4
6
CCO
Bottom
(Banks
Top,
0,2)
12
10
30
21
18
17
12
36
13
10
-GND Pair (V
7
7
–
–
7
6
–
–
–
–
–
–
–
–
–
–
9
–
–
–
–
–
8
7
–
–
7
5
TQ144
DS529-3 (v1.5) July 10, 2007
(Banks
Package Type
Right
Left,
1,3)
12
10
30
21
18
12
12
17
13
10
36
33
27
11
13
13
10
7
7
6
5
7
6
4
3
9
9
9
9
9
9
7
5
8
3
6
8
6
Product Specification
Bottom
CCAUX
FG400, FG484,
FT256, FG320,
(Banks
Top,
0,2)
55
31
18
25
10
70
40
31
40
31
55
16
17
10
18
–
–
6
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
7
–
–
8
6
FG676
=3.3V)
(Banks
Right
Left,
1,3)
55
31
18
15
10
25
10
70
40
31
31
20
40
25
18
31
13
55
36
36
16
13
11
20
17
15
18
10
6
4
3
9
8
5
8
3
9
7
R