EPF81188A 查看數據表（PDF） - Altera Corporation
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EPF81188A Datasheet PDF : 62 Pages
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FLEX 8000 Programmable Logic Device Family Data Sheet
Figure 6. FLEX 8000 LE Operating Modes
Normal Mode
Carry-In
data1
data2
data3
data4
4-Input
LUT
Cascade-In
PRN
DQ
CLRN
Cascade-Out
LE-Out
Arithmetic Mode
Carry-In
Cascade-In
LE-Out
data1
data2
3-Input
LUT
PRN
DQ
CLRN
3-Input
LUT
Cascade-Out
3
Carry-Out
Up/Down Counter Mode
Carry-In
Cascade-In
data1 (ena)
data2 (nclr)
data3 (data)
data4 (nload)
3-Input
LUT
3-Input
LUT
Clearable Counter Mode
Carry-In
PRN
1
DQ
0
CLRN
Carry-Out
Cascade-Out
LE-Out
data1 (ena)
data2 (nclr)
data3 (data)
data4 (nload)
3-Input
LUT
3-Input
LUT
PRN
1
DQ
0
CLRN
Carry-Out
Cascade-Out
LE-Out
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