LFE2-35SE-5FN672I Lattice, LFE2-35SE-5FN672I Datasheet - Page 25
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LFE2-35SE-5FN672I
Manufacturer Part Number
LFE2-35SE-5FN672I
Description
IC FPGA 32KLUTS 672FPBGA
Manufacturer
Lattice
Datasheet
1.LFE2-12E-5FN256C.pdf
(385 pages)
Specifications of LFE2-35SE-5FN672I
Number Of Logic Elements/cells
*
Number Of Labs/clbs
*
Total Ram Bits
*
Number Of I /o
*
Number Of Gates
*
Voltage - Supply
*
Mounting Type
*
Operating Temperature
*
Package / Case
*
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-35SE-5FN672I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
Table 2-7. Maximum Number of Elements in a Block
Some options are available in four elements. The input register in all the elements can be directly loaded or can be
loaded as a shift register from previous operand registers. By selecting “dynamic operation” the following opera-
tions are possible:
• In the ‘Signed/Unsigned’ options the operands can be switched between signed and unsigned on every cycle.
• In the ‘Add/Sub’ option the Accumulator can be switched between addition and subtraction on every cycle.
• The loading of operands can switch between parallel and serial operations.
MULT sysDSP Element
This multiplier element implements a multiply with no addition or accumulator nodes. The two operands, A and B,
are multiplied and the result is available at the output. The user can enable the input/output and pipeline registers.
Figure 2-23 shows the MULT sysDSP element.
Figure 2-23. MULT sysDSP Element
MULT
MAC
MULTADDSUB
MULTADDSUBSUM
Width of Multiply
Multiplicand
Multiplier
Signed A
Signed B
Shift Register B Out
Shift Register B In
n
Register B
Input Data
n
n
n
Register
Register
Input
Input
x9
8
2
4
2
m
Register A
Input Data
m
m
Shift Register A Out
m
Shift Register A In
2-22
Multiplier
Multiplier
m
n
To
To
Multiplier
Register
Pipeline
x
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
x18
4
2
2
1
LatticeECP2/M Family Data Sheet
(default)
m+n
m+n
Output
Architecture
x36
—
—
—
1
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