LFE3-150EA-7FN1156CTW Lattice, LFE3-150EA-7FN1156CTW Datasheet - Page 31

• Manufacturer Part Number: LFE3-150EA-7FN1156CTW
• Description: FPGA - Field Programmable Gate Array 149K LUTs 586 I/O 1.2V -7 Speed
• Manufacturer: Lattice

Specifications of LFE3-150EA-7FN1156CTW

• Number Of Programmable I/os: 133 to 586
• Data Ram Size: 6.85 Mbits
• Delay Time: 37 ns
• Supply Voltage (max): 1.26 V
• Supply Current: 18 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Supply Voltage (min): 1.14 V
• Package / Case: FPBGA-1156
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
MULTADDSUBSUM DSP Element
In this case, the operands AA and AB are multiplied and the result is added/subtracted with the result of the multi-
plier operation of operands BA and BB of Slice 0. Additionally, the operands AA and AB are multiplied and the
result is added/subtracted with the result of the multiplier operation of operands BA and BB of Slice 1. The results
of both addition/subtractions are added by the second ALU following the slice cascade path. The user can enable
the input, output and pipeline registers. Figure 2-30 and Figure 2-31 show the MULTADDSUBSUM sysDSP ele-
ment.
Figure 2-30. MULTADDSUBSUM Slice 0
DSP Slice
Previous
IR = Input Register
PR = Pipeline Register
OR = Output Register
FR = Flag Register
Rounding
SRIB
SRIA
C_ALU
A_ALU
CIN
0
I
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
2-28
OR
PR
IR
OPCODE
FR
0
=
=
B_ALU
BMUX
IR
ALU
BA
MULTB
OR
PR
LatticeECP3 Family Data Sheet
IR
BB
IR
COUT
SROB
SROA
DSP Slice
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Architecture