參數(shù)資料
型號： EP20K400ERC240-3
廠商： ALTERA CORP
元件分類： PLD
英文描述： LOADABLE PLD, PQFP240
封裝： HEAT SINK, POWER, QFP-240
文件頁數(shù)： 10/65頁
文件大?。?/td> 781K
代理商： EP20K400ERC240-3
40
Altera Corporation
APEX 20K Programmable Logic Device Family Data Sheet
Preliminary Information
Normal Mode
The normal mode is suitable for general logic applications, combinatorial
functions, or wide decoding functions that can take advantage of a
cascade chain. In normal mode, four data inputs from the LAB local
interconnect and the carry-in are inputs to a 4-input LUT. The Quartus
Compiler automatically selects the carry-in or the DATA3 signal as one of
the inputs to the LUT. The LUT output can be combined with the
cascade-in signal to form a cascade chain through the cascade-out signal.
LEs in normal mode support packed registers.
Arithmetic Mode
The arithmetic mode is ideal for implementing adders, accumulators, and
comparators. An LE in arithmetic mode uses two 3-input LUTs. One LUT
computes a 3-input function; the other generates a carry output. As shown
in Figure 8, the first LUT uses the carry-in signal and two data inputs from
the LAB local interconnect to generate a combinatorial or registered
output. For example, when implementing an adder, this output is the sum
of three signals: DATA1, DATA2, and carry-in. The second LUT uses the
same three signals to generate a carry-out signal, thereby creating a carry
chain. The arithmetic mode also supports simultaneous use of the cascade
chain. LEs in arithmetic mode can drive out registered and unregistered
versions of the LUT output.
The Quartus software implements parameterized functions that use the
arithmetic mode automatically where appropriate; the designer does not
need to specify how the carry chain will be used.
Counter Mode
The counter mode offers clock enable, counter enable, synchronous
up/down control, synchronous clear, and synchronous load options. The
counter enable and synchronous up/down control signals are generated
from the data inputs of the LAB local interconnect. The synchronous clear
and synchronous load options are LAB-wide signals that affect all
registers in the LAB. Consequently, if any of the LEs in an LAB use
counter mode, other LEs in that LAB must be used as part of the same
counter or be used for a combinatorial function. The Quartus software
automatically places any registers that are not used by the counter into
other LABs.
相關(guān)PDF資料
PDF描述
EP20K400ERI240-1 LOADABLE PLD, PQFP240
EP20K400ERI240-2 LOADABLE PLD, PQFP240
EP20K400ERI240-3 LOADABLE PLD, PQFP240
EP20K400FC672-3X LOADABLE PLD, 3.6 ns, PBGA672
EPB5065G 42 MHz, LOW PASS FILTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EP20K400FC672-1 功能描述:FPGA - 現(xiàn)場可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP20K400FC672-1ES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FPGA
EP20K400FC672-1X 功能描述:FPGA - 現(xiàn)場可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP20K400FC672-2 功能描述:FPGA - 現(xiàn)場可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
EP20K400FC672-2ES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FPGA
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