参数资料
| 型号： | XC4006E-4TQ144I |
| 厂商： | Xilinx Inc |
| 文件页数： | 34/68页 |
| 文件大小： | 0K |
| 描述： | IC FPGA I-TEMP 5V 4SPD 144-TQFP |
| 产品变化通告： | XC4000XL/E, XC9500XV, XC3100A Discontinuance 12/Apr/2010 |
| 标准包装： | 60 |
| 系列： | XC4000E/X |
| LAB/CLB数： | 256 |
| 逻辑元件/单元数： | 608 |
| RAM 位总计： | 8192 |
| 输入/输出数： | 113 |
| 门数： | 6000 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 工作温度： | -40°C ~ 100°C |
| 封装/外壳： | 144-LQFP |
| 供应商设备封装： | 144-TQFP（20x20） |
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R
XC4000E and XC4000X Series Field Programmable Gate Arrays
6-8
May 14, 1999 (Version 1.6)
Input Thresholds
The input thresholds of 5V devices can be globally cong-
ured for either TTL (1.2 V threshold) or CMOS (2.5 V
threshold), just like XC2000 and XC3000 inputs. The two
global adjustments of input threshold and output level are
independent of each other. The XC4000XL family has an
input threshold of 1.6V, compatible with both 3.3V CMOS
and TTL levels.
Global Signal Access to Logic
There is additional access from global clocks to the F and
G function generator inputs.
Conguration Pin Pull-Up Resistors
During configuration, these pins have weak pull-up resis-
tors. For the most popular configuration mode, Slave
Serial, the mode pins can thus be left unconnected. The
three mode inputs can be individually configured with or
without weak pull-up or pull-down resistors. A pull-down
resistor value of 4.7 k
is recommended.
The three mode inputs can be individually congured with
or without weak pull-up or pull-down resistors after congu-
ration.
The PROGRAM input pin has a permanent weak pull-up.
Soft Start-up
Like the XC3000A, XC4000 Series devices have “Soft
Start-up.” When the conguration process is nished and
the device starts up, the rst activation of the outputs is
automatically slew-rate limited. This feature avoids poten-
tial ground bounce when all outputs are turned on simulta-
neously. Immediately after start-up, the slew rate of the
individual outputs is, as in the XC4000 family, determined
by the individual conguration option.
XC4000 and XC4000A Compatibility
Existing XC4000 bitstreams can be used to congure an
XC4000E device. XC4000A bitstreams must be recompiled
for use with the XC4000E due to improved routing
resources, although the devices are pin-for-pin compatible.
Additional Improvements in XC4000X Only
Increased Routing
New interconnect in the XC4000X includes twenty-two
additional vertical lines in each column of CLBs and twelve
new horizontal lines in each row of CLBs. The twelve “Quad
Lines” in each CLB row and column include optional repow-
ering buffers for maximum speed. Additional high-perfor-
mance routing near the IOBs enhances pin exibility.
Faster Input and Output
A fast, dedicated early clock sourced by global clock buffers
is available for the IOBs. To ensure synchronization with the
regular global clocks, a Fast Capture latch driven by the
early clock is available. The input data can be initially
loaded into the Fast Capture latch with the early clock, then
transferred to the input ip-op or latch with the low-skew
global clock. A programmable delay on the input can be
used to avoid hold-time requirements. See “IOB Input Sig-
nals” on page 20 for more information.
Latch Capability in CLBs
Storage elements in the XC4000X CLB can be congured
as either ip-ops or latches. This capability makes the
FPGA highly synthesis-compatible.
IOB Output MUX From Output Clock
A multiplexer in the IOB allows the output clock to select
either the output data or the IOB clock enable as the output
to the pad. Thus, two different data signals can share a sin-
gle output pad, effectively doubling the number of device
outputs without requiring a larger, more expensive pack-
age. This multiplexer can also be congured as an
AND-gate to implement a very fast pin-to-pin path. See
“IOB Output Signals” on page 23 for more information.
Additional Address Bits
Larger devices require more bits of conguration data. A
daisy chain of several large XC4000X devices may require
a PROM that cannot be addressed by the eighteen address
bits supported in the XC4000E. The XC4000X Series
therefore extends the addressing in Master Parallel cong-
uration mode to 22 bits.
Product Obsolete or Under Obsolescence
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