参数资料
型号: EPF10K10ATI144-3N
厂商: Altera
文件页数: 37/128页
文件大小: 0K
描述: IC FLEX 10KA FPGA 10K 144-TQFP
产品培训模块: Three Reasons to Use FPGA's in Industrial Designs
标准包装: 180
系列: FLEX-10K®
LAB/CLB数: 72
逻辑元件/单元数: 576
RAM 位总计: 6144
输入/输出数: 102
门数: 31000
电源电压: 3 V ~ 3.6 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)
16
Altera Corporation
FLEX 10K Embedded Programmable Logic Device Family Data Sheet
Figure 7 shows how an n-bit full adder can be implemented in n +1 LEs
with the carry chain. One portion of the LUT generates the sum of two bits
using the input signals and the carry-in signal; the sum is routed to the
output of the LE. The register can either be bypassed for simple adders or
be used for an accumulator function. The carry chain logic generates the
carry-out signal, which is routed directly to the carry-in signal of the next-
higher-order bit. The final carry-out signal is routed to an LE, where it can
be used as a general-purpose signal.
Figure 7. Carry Chain Operation (n-bit Full Adder)
LUT
a1
b1
Carry Chain
s1
LE1
Register
a2
b2
Carry Chain
s2
LE2
Register
Carry Chain
sn
LEn
Register
an
bn
Carry Chain
Carry-Out
LEn + 1
Register
Carry-In
LUT
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