LFE2M50E-7FN672C LATTICE SEMICONDUCTOR, LFE2M50E-7FN672C Datasheet - Page 27
LFE2M50E-7FN672C
Manufacturer Part Number
LFE2M50E-7FN672C
Description
FPGA LatticeECP2M Family 48000 Cells 90nm (CMOS) Technology 1.2V 672-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFE2-12SE-6FN256C.pdf
(389 pages)
Specifications of LFE2M50E-7FN672C
Package
672FBGA
Family Name
LatticeECP2M
Device Logic Units
48000
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
372
Ram Bits
4246528
In System Programmability
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2M50E-7FN672C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
Part Number:
LFE2M50E-7FN672C
Manufacturer:
LATTICE
Quantity:
20 000
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Lattice Semiconductor
MAC sysDSP Element
In this case, the two operands, A and B, are multiplied and the result is added with the previous accumulated value.
This accumulated value is available at the output. The user can enable the input and pipeline registers, but the out-
put register is always enabled. The output register is used to store the accumulated value. The Accumulators in the
DSP blocks in the LatticeECP2/M family can be initialized dynamically. A registered overflow signal is also avail-
able. The overflow conditions are provided later in this document. Figure 2-24 shows the MAC sysDSP element.
Figure 2-24. MAC sysDSP
Multiplicand
Multiplier
Signed A
Signed B
Addn
Accumsload
Serial Register B in
n
Input Data
Register B
n
n
SROB
n
Register
Register
Register
Register
Input
Input
Input
Input
m
Input Data
Register A
m
n
SROA
Serial Register A in
m
Register
Register
Register
Register
Pipeline
Pipeline
Pipeline
Pipeline
m
n
2-24
To Accumulator
To Accumulator
To Accumulator
To Accumulator
Multiplier
Register
Pipeline
x
(default)
m+n
Accumulator
LatticeECP2/M Family Data Sheet
CLK (CLK0,CLK1,CLK2,CLK3)
RST(RST0,RST1,RST2,RST3)
CE (CE0,CE1,CE2,CE3)
m+n+16
(default)
Preload
(default)
m+n+16
Architecture
Output
Overflow
signal
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