LFE3-150EA-6FN1156I Lattice, LFE3-150EA-6FN1156I Datasheet - Page 29
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LFE3-150EA-6FN1156I
Manufacturer Part Number
LFE3-150EA-6FN1156I
Description
IC FPGA 149KLUTS 586I/O 1156BGA
Manufacturer
Lattice
Datasheet
1.LFE3-150EA-7FN672C.pdf
(136 pages)
Specifications of LFE3-150EA-6FN1156I
Number Of Logic Elements/cells
*
Number Of Labs/clbs
*
Total Ram Bits
7014400
Number Of I /o
586
Number Of Gates
-
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
*
Operating Temperature
-40°C ~ 100°C
Package / Case
*
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
220-1099
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE3-150EA-6FN1156I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
Company:
Part Number:
LFE3-150EA-6FN1156ITW
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
MMAC DSP Element
The LatticeECP3 supports a MAC with two multipliers. This is called Multiply Multiply Accumulate or MMAC. In this
case, the two operands, AA and AB, are multiplied and the result is added with the previous accumulated value and
with the result of the multiplier operation of operands BA and BB. This accumulated value is available at the output.
The user can enable the input and pipeline registers, but the output register is always enabled. The output register
is used to store the accumulated value. The ALU is configured as the accumulator in the sysDSP slice. A registered
overflow signal is also available. The overflow conditions are provided later in this document. Figure 2-28 shows the
MMAC sysDSP element.
Figure 2-28. MMAC sysDSP Element
DSP Slice
Previous
IR = Input Register
PR = Pipeline Register
OR = Output Register
FR = Flag Register
Rounding
SRIB
SRIA
C_ALU
A_ALU
CIN
0
IR
C
IR
AA
MULTA
OR
PR
AMUX
A_ALU
IR
From FPGA Core
AB
To FPGA Core
0
R = Logic (B, C)
R= A ± B ± C
2-26
OR
PR
IR
OPCODE
FR
0
=
=
B_ALU
BMUX
IR
ALU
BA
MULTB
LatticeECP3 Family Data Sheet
OR
PR
IR
BB
IR
COUT
SROB
SROA
DSP Slice
Next
Architecture
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