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Spartan-3 FPGA Family: Pinout Descriptions
R
FT256: 256-lead Fine-pitch Thin Ball
Grid Array
The 256-lead fine-pitch thin ball grid array package, FT256,
supports three different Spartan-3 devices, including the
XC3S200, the XC3S400, and the XC3S1000. The footprints
for all three devices are identical, as shown in Table 23 and
Figure 11.
All the package pins appear in Table 23 and are sorted by
bank number, then by pin name. Pairs of pins that form a dif-
ferential I/O pair appear together in the table. The table also
shows the pin number for each pin and the pin type, as
defined earlier.
Pinout Table
Table 23: FT256 Package Pinout
Bank
XC3S200
XC3S400
XC3S1000
Pin Name
0
IO
0
IO
0
IO/VREF_0
0
IO/VREF_0
0
IO_L01N_0/VRP_0
0
IO_L01P_0/VRN_0
0
IO_L25N_0
0
IO_L25P_0
0
IO_L27N_0
0
IO_L27P_0
0
IO_L28N_0
0
IO_L28P_0
0
IO_L29N_0
0
IO_L29P_0
0
IO_L30N_0
0
IO_L30P_0
0
IO_L31N_0
0
IO_L31P_0/VREF_0
0
IO_L32N_0/GCLK7
0
IO_L32P_0/GCLK6
0
VCCO_0
0
VCCO_0
0
VCCO_0
1
IO
1
IO
1
IO
1
IO/VREF_1
1
IO_L01N_1/VRP_1
FT256
Pin
Number
A5
A7
A3
D5
B4
A4
C5
B5
E6
D6
C6
B6
E7
D7
C7
B7
D8
C8
B8
A8
E8
F7
F8
A9
A12
C10
D12
A14
Type
I/O
I/O
VREF
VREF
DCI
DCI
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
VREF
GCLK
GCLK
VCCO
VCCO
VCCO
I/O
I/O
I/O
VREF
DCI
Table 23: FT256 Package Pinout (Continued)
Bank
XC3S200
XC3S400
XC3S1000
Pin Name
FT256
Pin
Number
1
IO_L01P_1/VRN_1
B14
1
IO_L10N_1/VREF_1
A13
1
IO_L10P_1
B13
1
IO_L27N_1
B12
1
IO_L27P_1
C12
1
IO_L28N_1
D11
1
IO_L28P_1
E11
1
IO_L29N_1
B11
1
IO_L29P_1
C11
1
IO_L30N_1
D10
1
IO_L30P_1
E10
1
IO_L31N_1/VREF_1
A10
1
IO_L31P_1
B10
1
IO_L32N_1/GCLK5
C9
1
IO_L32P_1/GCLK4
D9
1
VCCO_1
E9
1
VCCO_1
F9
1
VCCO_1
F10
2
IO
G16
2
IO_L01N_2/VRP_2
B16
2
IO_L01P_2/VRN_2
C16
2
IO_L16N_2
C15
2
IO_L16P_2
D14
2
IO_L17N_2
D15
2
IO_L17P_2/VREF_2
D16
2
IO_L19N_2
E13
2
IO_L19P_2
E14
2
IO_L20N_2
E15
2
IO_L20P_2
E16
2
IO_L21N_2
F12
2
IO_L21P_2
F13
2
IO_L22N_2
F14
2
IO_L22P_2
F15
2
IO_L23N_2/VREF_2
G12
2
IO_L23P_2
G13
2
IO_L24N_2
G14
2
IO_L24P_2
G15
2
IO_L39N_2
H13
2
IO_L39P_2
H14
2
IO_L40N_2
H15
Type
DCI
VREF
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
VREF
I/O
GCLK
GCLK
VCCO
VCCO
VCCO
I/O
DCI
DCI
I/O
I/O
I/O
VREF
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
VREF
I/O
I/O
I/O
I/O
I/O
I/O
38
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