EP4CE40F29C8N Altera, EP4CE40F29C8N Datasheet - Page 32
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EP4CE40F29C8N
Manufacturer Part Number
EP4CE40F29C8N
Description
IC CYCLONE IV FPGA 40K 780FBGA
Manufacturer
Altera
Series
CYCLONE® IV Er
Datasheets
1.EP4CGX15BN11C8N.pdf
(44 pages)
2.EP4CGX15BN11C8N.pdf
(14 pages)
3.EP4CGX15BN11C8N.pdf
(478 pages)
4.EP4CGX15BN11C8N.pdf
(10 pages)
Specifications of EP4CE40F29C8N
Number Of Logic Elements/cells
39600
Number Of Labs/clbs
2475
Total Ram Bits
1134000
Number Of I /o
532
Voltage - Supply
1.15 V ~ 1.25 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
780-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Available stocks
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Part Number:
EP4CE40F29C8N
Manufacturer:
ALTERA43
Quantity:
1 602
Part Number:
EP4CE40F29C8N
Manufacturer:
ALTERA/阿尔特拉
Quantity:
20 000
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2–4
Arithmetic Mode
Figure 2–3. Cyclone IV Device LEs in Arithmetic Mode
Logic Array Blocks
Topology
Cyclone IV Device Handbook, Volume 1
of previous LE)
cin (from cout
data4
data1
data2
data3
Packed Register Input
Arithmetic mode is ideal for implementing adders, counters, accumulators, and
comparators. An LE in arithmetic mode implements a 2-bit full adder and basic carry
chain
versions of the LUT output. Register feedback and register packing are supported
when LEs are used in arithmetic mode.
Figure 2–3
The Quartus II Compiler automatically creates carry chain logic during design
processing. You can also manually create the carry chain logic during design entry.
Parameterized functions, such as LPM functions, automatically take advantage of
carry chains for the appropriate functions.
The Quartus II Compiler creates carry chains longer than 16 LEs by automatically
linking LABs in the same column. For enhanced fitting, a long carry chain runs
vertically, which allows fast horizontal connections to M9K memory blocks or
embedded multipliers through direct link interconnects. For example, if a design has
a long carry chain in an LAB column next to a column of M9K memory blocks, any LE
output can feed an adjacent M9K memory block through the direct link interconnect.
If the carry chains run horizontally, any LAB which is not next to the column of M9K
memory blocks uses other row or column interconnects to drive a M9K memory
block. A carry chain continues as far as a full column.
Logic array blocks (LABs) contain groups of LEs.
Each LAB consists of the following features:
■
16 LEs
(Figure
shows LEs in arithmetic mode.
Three-Input
Three-Input
LUT
LUT
2–3). LEs in arithmetic mode can drive out registered and unregistered
cout
Register Chain
Connection
Register Bypass
clock (LAB Wide)
ena (LAB Wide)
sload
aclr (LAB Wide)
(LAB Wide)
Chapter 2: Logic Elements and Logic Array Blocks in Cyclone IV Devices
sclear
Register Feedback
(LAB Wide)
ENA
D
CLRN
Q
© November 2009 Altera Corporation
Row, Column, and
Direct link routing
Row, Column, and
Direct link routing
Local Routing
Register
Chain Output
Logic Array Blocks
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