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參數(shù)資料
| 型號： | XC4013E-1HG240M |
| 廠商： | Xilinx, Inc. |
| 英文描述： | Programmable Gate Arrays |
| 中文描述： | 可編程門陣列 |
| 文件頁數(shù)： | 35/68頁 |
| 文件大小： | 462K |
| 代理商： | XC4013E-1HG240M |
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R
May 14, 1999 (Version 1.6)
6-39
XC4000E and XC4000X Series Field Programmable Gate Arrays
6
The top and bottom Global Early buffers are about 1 ns
slower clock to out than the left and right Global Early buff-
ers.
The Global Early buffers can be driven by either semi-ded-
icated pads or internal logic. They share pads with the Glo-
bal Low-Skew buffers, so a single net can drive both global
buffers, as described above.
To use a Global Early buffer, place a BUFGE element in a
schematic or in HDL code. If desired, attach a LOC
attribute or property to direct placement to the designated
location. For example, attach a LOC=T attribute or property
to direct that a BUFGE be placed in one of the two Global
Early buffers on the top edge of the device, or a LOC=TR to
indicate the Global Early buffer on the top edge of the
device, on the right.
Power Distribution
Power for the FPGA is distributed through a grid to achieve
high noise immunity and isolation between logic and I/O.
Inside the FPGA, a dedicated Vcc and Ground ring sur-
rounding the logic array provides power to the I/O drivers,
as shown in
Figure 39
. An independent matrix of Vcc and
Ground lines supplies the interior logic of the device.
This power distribution grid provides a stable supply and
ground for all internal logic, providing the external package
power pins are all connected and appropriately de-coupled.
Typically, a 0.1
μ
F capacitor connected between each Vcc
pin and the board’s Ground plane will provide adequate
de-coupling.
Output buffers capable of driving/sinking the specified 12
mA loads under specified worst-case conditions may be
capable of driving/sinking up to 10 times as much current
under best case conditions.
Noise can be reduced by minimizing external load capaci-
tance and reducing simultaneous output transitions in the
same direction. It may also be beneficial to locate heavily
loaded output buffers near the Ground pads. The I/O Block
output buffers have a slew-rate limited mode (default) which
should be used where output rise and fall times are not
speed-critical.
Pin Descriptions
There are three types of pins in the XC4000 Series
devices:
Permanently dedicated pins
User I/O pins that can have special functions
Unrestricted user-programmable I/O pins.
Before and during configuration, all outputs not used for the
configuration process are 3-stated with a 50 k
- 100 k
pull-up resistor.
After configuration, if an IOB is unused it is configured as
an input with a 50 k
- 100 k
pull-up resistor.
XC4000 Series devices have no dedicated Reset input.
Any user I/O can be configured to drive the Global
Set/Reset net, GSR.
See
“Global Set/Reset” on page 11
for more information on GSR.
XC4000 Series devices have no Powerdown control input,
as
the
XC3000
and
XC2000
XC3000/XC2000 Powerdown control also 3-stated all of the
device
I/O pins. For XC4000 Series devices, use the global 3-state
net, GTS, instead. This net 3-states all outputs, but does
not place the device in low-power mode. See
“IOB Output
Signals” on page 23
for more information on GTS.
families
do.
The
Device pins for XC4000 Series devices are described in
Table 16
. Pin functions during configuration for each of the
seven configuration modes are summarized in
Table 22 on
page 58
, in the “Configuration Timing” section.
GND
Ground and
Vcc Ring for
I/O Drivers
Vcc
GND
Vcc
Logic
Power Grid
X5422
Figure 39: XC4000 Series Power Distribution
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| XC4013E-1HQ208C | 功能描述:IC FPGA C-TEMP 5V 1SPD 208-HQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - FPGA（現(xiàn)場可編程門陣列） 系列:XC4000E/X 標(biāo)準(zhǔn)包裝:1 系列:Kintex-7 LAB/CLB數(shù):25475 邏輯元件/單元數(shù):326080 RAM 位總計:16404480 輸入/輸出數(shù):350 門數(shù):- 電源電壓:0.97 V ~ 1.03 V 安裝類型:表面貼裝 工作溫度:0°C ~ 85°C 封裝/外殼:900-BBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:900-FCBGA（31x31） 其它名稱:122-1789 |
| XC4013E-1HQ208I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field Programmable Gate Array (FPGA) |
| XC4013E-1HQ240C | 功能描述:IC FPGA C-TEMP 5V 1SPD 240-HQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - FPGA（現(xiàn)場可編程門陣列） 系列:XC4000E/X 標(biāo)準(zhǔn)包裝:1 系列:Kintex-7 LAB/CLB數(shù):25475 邏輯元件/單元數(shù):326080 RAM 位總計:16404480 輸入/輸出數(shù):350 門數(shù):- 電源電壓:0.97 V ~ 1.03 V 安裝類型:表面貼裝 工作溫度:0°C ~ 85°C 封裝/外殼:900-BBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:900-FCBGA（31x31） 其它名稱:122-1789 |
| XC4013E-1HQ240I | 制造商:XILINX 制造商全稱:XILINX 功能描述:XC4000E and XC4000X Series Field Programmable Gate Arrays |
| XC4013E-1HQ240M | 制造商:XILINX 制造商全稱:XILINX 功能描述:XC4000E and XC4000X Series Field Programmable Gate Arrays |
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