參數(shù)資料
型號: EP20K400EQI240-2
廠商: ALTERA CORP
元件分類: PLD
英文描述: LOADABLE PLD, PQFP240
封裝: PLASTIC, QFP-240
文件頁數(shù): 6/65頁
文件大?。?/td> 781K
代理商: EP20K400EQI240-2
36
Altera Corporation
APEX 20K Programmable Logic Device Family Data Sheet
Preliminary Information
Figure 6. APEX 20K Carry Chain
Cascade Chain
With the cascade chain, the APEX 20K architecture can implement
functions with a very wide fan-in. Adjacent LUTs can compute portions
of a function in parallel; the cascade chain serially connects the
intermediate values. The cascade chain can use a logical AND or logical OR
(via De Morgan’s inversion) to connect the outputs of adjacent LEs. Each
additional LE provides four more inputs to the effective width of a
function, with a short cascade delay. Cascade chain logic can be created
automatically by the Quartus Compiler during design processing, or
manually by the designer during design entry.
LUT
a1
b1
Carry Chain
s1
LE1
Register
a2
b2
Carry Chain
s2
LE2
Register
Carry Chain
s
n
LE
n
Register
a
n
b
n
Carry Chain
Carry-Out
LE
n + 1
Register
Carry-In
LUT
相關(guān)PDF資料
PDF描述
EP20K400EQI240-3 LOADABLE PLD, PQFP240
EP20K400ERC240-1 LOADABLE PLD, PQFP240
EP20K400ERC240-2 LOADABLE PLD, PQFP240
EP20K400ERC240-3 LOADABLE PLD, PQFP240
EP20K400ERI240-1 LOADABLE PLD, PQFP240
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