XC3S250E-4FTG256C Xilinx Inc, XC3S250E-4FTG256C Datasheet - Page 17

• Manufacturer Part Number: XC3S250E-4FTG256C
• Description: IC SPARTAN-3E FPGA 250K 256-FTBG
• Manufacturer: Xilinx Inc
• Series: Spartan™-3Er

Specifications of XC3S250E-4FTG256C

• Total Ram Bits: 221184
• Number Of Logic Elements/cells: 5508
• Number Of Labs/clbs: 612
• Number Of I /o: 172
• Number Of Gates: 250000
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 256-LBGA
• No. Of Logic Blocks: 5508
• No. Of Gates: 250000
• No. Of Macrocells: 5508
• No. Of Speed Grades: 4
• No. Of I/o's: 190
• Clock Management: DLL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 122-1482

Table 6: Single-Ended IOSTANDARD Bank Compatibility (Continued)
Table 7: Differential IOSTANDARD Bank Compatibility
HSTL and SSTL inputs use the Reference Voltage (V
bias the input-switching threshold. Once a configuration
data file is loaded into the FPGA that calls for the I/Os of a
given bank to use HSTL/SSTL, a few specifically reserved
I/O pins on the same bank automatically convert to V
inputs. For banks that do not contain HSTL or SSTL, V
pins remain available for user I/Os or input pins.
Differential standards employ a pair of signals, one the
opposite polarity of the other. The noise canceling proper-
ties (for example, Common-Mode Rejection) of these stan-
dards permit exceptionally high data transfer rates. This
DS312-2 (v3.8) August 26, 2009
Product Specification
Notes:
1.
Notes:
1.
SSTL18_I
SSTL2_I
LVDS_25
RSDS_25
MINI_LVDS_25
LVPECL_25
BLVDS_25
DIFF_HSTL_I_18
DIFF_HSTL_III_18
DIFF_SSTL18_I
DIFF_SSTL2_I
IOSTANDARD
Single-Ended
IOSTANDARD
N/R - Not required for input operation.
Each bank can support any two of the following: LVDS_25 outputs, MINI_LVDS_25 outputs, RSDS_25 outputs.
Differential
R
1.2V
Output
Output
Output
Input,
Input,
Input,
-
-
Input
Input
Input
Input
Input
Input
1.8V
1.5V
On-chip Differential Termination,
On-chip Differential Termination,
On-chip Differential Termination,
V
CCO
-
-
Supply/Compatibility
V
CCO
Output
Input/
1.8V
Output
Output
Output
Output
Output
Input,
Input,
Input,
Input,
Input,
Input
Input
Input
Input
2.5V
-
Supply
REF
www.xilinx.com
REF
REF
) to
Output
Input/
Input
2.5V
subsection introduces the differential signaling capabilities
of Spartan-3E devices.
Each device-package combination designates specific I/O
pairs specially optimized to support differential standards. A
unique L-number, part of the pin name, identifies the
line-pairs associated with each bank (see
tions
nate the true and inverted lines, respectively. For example,
the pin names IO_L43P_3 and IO_L43N_3 indicate the true
and inverted lines comprising the line pair L43 on Bank 3.
in Module 4). For each pair, the letters P and N desig-
Input
Input
3.3V
Input
Input
Input
Input
Input
Input
Input
Input
Input
3.3V
V
Requirements:
REF
for these I/O
standards
V
1.25
is not used
Input
V
0.9
REF
Input Requirements
REF
Functional Description
restrictions might
Bank Restriction
Differential Bank
(other I/O bank
Voltage (V
Pinout Descrip-
No Differential
Termination
Outputs Only
Outputs Only
Outputs Only
Restriction
Applies to
Applies to
Applies to
Board
apply)
1.25
0.9
TT
(1)
)
17