LFE2-50E-5F672C LATTICE SEMICONDUCTOR, LFE2-50E-5F672C Datasheet - Page 8
LFE2-50E-5F672C
Manufacturer Part Number
LFE2-50E-5F672C
Description
FPGA LatticeECP2 Family 48000 Cells 90nm (CMOS) Technology 1.2V 672-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFE2-12SE-6FN256C.pdf
(389 pages)
Specifications of LFE2-50E-5F672C
Package
672FBGA
Family Name
LatticeECP2
Device Logic Units
48000
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
500
Ram Bits
396288
In System Programmability
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-50E-5F672C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
- Current page: 8 of 389
- Download datasheet (5Mb)
Lattice Semiconductor
Modes of Operation
Each slice has up to four potential modes of operation: Logic, Ripple, RAM and ROM.
Logic Mode
In this mode, the LUTs in each slice are configured as 4-input combinatorial lookup tables. A LUT4 can have 16
possible input combinations. Any four input logic functions can be generated by programming this lookup table.
Since there are two LUT4s per slice, a LUT5 can be constructed within one slice. Larger look-up tables such as
LUT6, LUT7 and LUT8 can be constructed by concatenating other slices. Note LUT8 requires more than four
slices.
Ripple Mode
Ripple mode supports the efficient implementation of small arithmetic functions. In ripple mode, the following func-
tions can be implemented by each slice:
• Addition 2-bit
• Subtraction 2-bit
• Add/Subtract 2-bit using dynamic control
• Up counter 2-bit
• Down counter 2-bit
• Up/Down counter with Async clear
• Up/Down counter with preload (sync)
• Ripple mode multiplier building block
• Multiplier support
• Comparator functions of A and B inputs
Ripple Mode includes an optional configuration that performs arithmetic using fast carry chain methods. In this con-
figuration (also referred to as CCU2 mode) two additional signals, Carry Generate and Carry Propagate, are gener-
ated on a per slice basis to allow fast arithmetic functions to be constructed by concatenating Slices.
RAM Mode
In this mode, a 16x4-bit distributed single port RAM (SPR) can be constructed using each LUT block in Slice 0 and
Slice 2 as a 16x1-bit memory. Slice 1 is used to provide memory address and control signals. A 16x2-bit pseudo
dual port RAM (PDPR) memory is created by using one Slice as the read-write port and the other companion slice
as the read-only port.
The Lattice design tools support the creation of a variety of different size memories. Where appropriate, the soft-
ware will construct these using distributed memory primitives that represent the capabilities of the PFU. Table 2-3
shows the number of slices required to implement different distributed RAM primitives. For more information about
using RAM in LatticeECP2/M devices, please see the list of additional technical documentation at the end of this
data sheet.
Table 2-3. Number of Slices Required to Implement Distributed RAM
– A greater-than-or-equal-to B
– A not-equal-to B
– A less-than-or-equal-to B
Number of slices
Note: SPR = Single Port RAM, PDPR = Pseudo Dual Port RAM
SPR 16X4
2-5
3
LatticeECP2/M Family Data Sheet
PDPR 16X4
3
Architecture
Related parts for LFE2-50E-5F672C
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
IC, LATTICEECP2 FPGA, 420MHZ, FPBGA-484
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
FPGA LatticeECP2 Family 48000 Cells 90nm (CMOS) Technology 1.2V 484-Pin FBGA
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 12K LUTs 193 I/O DSP 1.2V -5 Spd
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 21K LUTs 331 I/O DSP 1.2V -5
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 6K LUTs 190 I/O DSP 1.2V -5
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 6K LUTs 90 I/O DSP 1.2V -5
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 12K LUTs 93 I/O DSP 1.2V -5 Spd
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
IC, LATTICEECP2 FPGA, 420MHZ, QFP-208
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
IC, LATTICEECP2 FPGA, 420MHZ, FPBGA-900
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
IC, LATTICEECP2 FPGA, 420MHZ, FPBGA-484
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 12K LUTs S-Series 1.1.2V -5 Spd
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 12K LUTs S-Series 1.1.2V -5 Spd
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 6K LUTs 90 I/O DSP 1.2V -5 I
Manufacturer:
Lattice
Datasheet:
Part Number:
Description:
FPGA - Field Programmable Gate Array 68K LUTs 500 I/O S-Ser DSP 1.2V -5 I
Manufacturer:
Lattice
Part Number:
Description:
FPGA - Field Programmable Gate Array 6K LUTs 90 I/O S-Ser DSP 1.2V -5 I
Manufacturer:
Lattice