XC3S200A-4VQG100C Datasheet, PDF (88/132 Pages) Xilinx, Inc – Architectural and Configuration Overview

Pinout Descriptions
Footprint Migration Differences
Unconnected Balls on XC3S50A
Table 73 summarizes any footprint and functionality
differences between the XC3S50A and the XC3S200A or
XC3S400A FPGAs that might affect easy migration between
these devices in the FT256 package. The XC3S200A and
XC3S400A have identical pinouts. The XC3S50A pinout is
compatible, but there are 52 balls that are different.
Generally, designs easily migrate upward from the
XC3S50A to either the XC3S200A or XC3S400A. If using
differential I/O, see Table 74. If using the BPI configuration
mode (parallel Flash), see Table 75.
Table 73: FT256 XC3S50A Footprint Migration Difference
FT256
Ball
A7
A12
B12
C7
D10
E2
E3
E7
E10
E16
F3
F8
F14
F15
F16
G3
G4
G5
G6
G13
G14
G16
H4
H5
H6
H13
J4
J6
J10
J11
Bank
0
0
0
0
0
3
3
0
0
1
3
0
1
1
1
3
3
3
3
1
1
1
3
3
3
1
3
3
1
1
XC3S50A
Type
N.C.
N.C.
INPUT
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
Migration
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
Æ
XC3S200A/
XC3S400A
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
INPUT
INPUT
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
INPUT
INPUT
Table 73: FT256 XC3S50A Footprint Migration
FT256
Ball
K4
K13
L1
L2
L3
Bank
3
1
3
3
3
XC3S50A
Type
N.C.
N.C.
N.C.
N.C.
N.C.
Migration
Æ
Æ
Æ
Æ
Æ
XC3S200A/
XC3S400A
Type
I/O
I/O
I/O
I/O
I/O
L4
3 N.C.
Æ
I/O
L13
1 N.C.
Æ
I/O
L14
1 N.C.
Æ
I/O
L16
1 N.C.
M3
3 N.C.
M10
2 N.C.
M13
1 N.C.
M14
1 N.C.
M15
1 N.C.
M16
1 N.C.
N7
2 N.C.
Æ
I/O
Æ
I/O
Æ
I/O
Æ
I/O
Æ
I/O
Æ
I/O
Æ
I/O
Æ
I/O
N10
2 N.C.
Æ
I/O
N12
2 N.C.
P6
2 N.C.
Æ
I/O
Æ
I/O
P13
2 N.C.
R7
2 N.C.
T7
2 N.C.
Æ
I/O
Æ
I/O
Æ
I/O
DIFFERENCES
52
Legend:
Æ
This pin can unconditionally migrate from the device
on the left to the device on the right. Migration in the
other direction is possible depending on how the pin is
configured for the device on the right.
88
www.xilinx.com
DS529-4 (v2.0) August 19, 2010