LFEC6E-3F256C LATTICE SEMICONDUCTOR, LFEC6E-3F256C Datasheet - Page 20
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LFEC6E-3F256C
Manufacturer Part Number
LFEC6E-3F256C
Description
FPGA LatticeEC Family 6100 Cells 340MHz 130nm (CMOS) Technology 1.2V 256-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFEC3E-5TN144C.pdf
(163 pages)
Specifications of LFEC6E-3F256C
Package
256FBGA
Family Name
LatticeEC
Device Logic Units
6100
Maximum Internal Frequency
340 MHz
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
195
Ram Bits
94208
In System Programmability
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFEC6E-3F256C
Manufacturer:
INFINEON
Quantity:
150
Company:
Part Number:
LFEC6E-3F256C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
Figure 2-20. MAC sysDSP Element
MULTADD sysDSP Element
In this case, the operands A0 and B0 are multiplied and the result is added/subtracted with the result of the multi-
plier operation of operands A1 and A2. The user can enable the input, output and pipeline registers. Figure 2-21
shows the MULTADD sysDSP element.
Figure 2-21. MULTADD
Multiplicand
Multiplier
SignedAB
Addn
Accumsload
Shift Register B Out
Multiplicand A0
Multiplicand A1
Multiplier B0
Multiplier B1
Signed
Addn
Shift Register B In
Shift Register B Out
Shift Register B In
n
Register B
Input Data
n
n
Register B
Register B
Input Data
Input Data
n
n
n
n
n
n
Register
Register
Register
n
n
Input
Input
Input
Register
Register
m
Input
Input
Register A
Input Data
m
m
Register A
Register A
Input Data
Input Data
m
n
Shift Register A Out
Shift Register A In
m
Shift Register A Out
m
m
m
Register
Register
Pipeline
Pipeline
Register
Pipeline
Shift Register A In
m
m
Register
Pipeline
Register
Pipeline
m
n
Pipe
Pipe
Reg
Reg
m
n
m
n
Accumulator
Accumulator
Accumulator
2-17
Multiplier
To
To
To
Register
Pipeline
x
To Add/Sub
To Add/Sub
Multiplier
Multiplier
Register
Pipeline
Register
Pipeline
(default)
x
x
m+n
(default)
(default)
m+n
m+n
LatticeECP/EC Family Data Sheet
Accumulator
m+n+16 bits
Add/Sub
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
(default)
(default)
m+n+1
m+n+16 bits
(default)
(default)
m+n+1
Architecture
Output
Output
Overflow
signal
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