LFEC3E-3QN208I Lattice, LFEC3E-3QN208I Datasheet - Page 385
![no-image](/images/manufacturer_photos/0/3/380/lattice_sml.jpg)
LFEC3E-3QN208I
Manufacturer Part Number
LFEC3E-3QN208I
Description
IC FPGA 3KLUTS 208PQFP
Manufacturer
Lattice
Series
EC3r
Datasheets
1.LFEC3E-5TN144C.pdf
(163 pages)
2.LFE3-35EA-8FN672I.pdf
(21 pages)
3.LFEC3E-3QN208I.pdf
(478 pages)
Specifications of LFEC3E-3QN208I
Number Of Logic Elements/cells
3100
Number Of Labs/clbs
-
Total Ram Bits
56320
Number Of I /o
145
Number Of Gates
-
Voltage - Supply
1.14 V ~ 1.26 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
208-BFQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
Q6377645
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFEC3E-3QN208I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
- Current page: 385 of 478
- Download datasheet (13Mb)
Lattice Semiconductor
attributes in the source code or through the tool’s Graphical User Interface (GUI). Each synthesis tool has its own
synthesis attributes and syntax for choosing the encoding styles. Refer to the synthesis tools documentation for
details about attributes syntax and values.
The following syntax defines an enumeration type in VHDL:
Here is a VHDL example of enumeration states:
The following are examples of Synplify
Synplify:
LeonardoSpectrum:
In Verilog, one must provide explicit state values for states. This can be done by using the bit pattern (e.g., 3'b001),
or by defining a parameter and using it as the case item. The latter method is preferable. The following is an exam-
ple using parameter for state values.
The attributes in the source code override the default encoding style assigned during synthesis. Since Verilog does
not have predefined attributes for synthesis, attributes are usually attached to the appropriate objects in the source
code as comments. The attributes and their values are case sensitive and usually appear in lower case. The follow-
ing examples use attributes in Verilog source code to specify state machine encoding style.
Synplify:
In LeonardoSpectrum, it is recommended to set the state machine variable to an enumeration type with enum
pragma. Once this is set in the source code, encoding schemes can be selected in the LeonardoSpectrum GUI.
LeonardoSpectrum:
In general, synthesis tools will select the optimal encoding style that takes into account the target device architec-
ture and size of the decode logic. One can always apply synthesis attributes to override the default encoding style
if necessary.
type type_name is (state1_name,state2_name,......,stateN_name)
type STATE_TYPE is (S0,S1,S2,S3,S4);
signal CURRENT_STATE, NEXT_STATE : STATE_TYPE;
attribute syn_encoding : string;
attribute syn_encoding of <signal_name> : type is "value ";
-- The syn_encoding attribute has 4 values : sequential, onehot, gray and safe.
-- Declare TYPE_ENCODING_STYLE attribute
-- Not needed if the exemplar_1164 package is used
type encoding_style is (BINARY, ONEHOT, GRAY, RANDOM, AUTO);
attribute TYPE_ENCODING_STYLE : encoding_style;
...
attribute TYPE_ENCODING_STYLE of <typename> : type is ONEHOT;
Parameter state1 = 2'h1, state2 = 2'h2;
...
current_state = state2; // setting current state to 2'h2
Reg[2:0] state; /* synthesis syn_encoding = "value" */;
// The syn_encoding attribute has 4 values : sequential, onehot, gray and safe.
Parameter /* exemplar enum <type_name> */ s0 = 0, s1 = 1, s2 = 2, s3 = 3, S4 = 4;
Reg [2:0] /* exemplar enum <type_name> */ present_state, next_state ;
®
and LeonardoSpectrum
13-4
®
VHDL synthesis attributes.
HDL Synthesis Coding Guidelines
for Lattice Semiconductor FPGAs
Related parts for LFEC3E-3QN208I
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![LFEC3E-3T144I](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
FPGA - Field Programmable Gate Array 3.1K LUTs 97 IO 1.2V -3 Spd I
Manufacturer:
Lattice
![LFEC3E-3T100I](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
FPGA - Field Programmable Gate Array 3.1K LUTs 67 IO 1.2V -3 Spd I
Manufacturer:
Lattice
![LFEC3E-3Q208I](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
FPGA - Field Programmable Gate Array 3.1K LUTs 145 IO 1.2 V -3 Spd I
Manufacturer:
Lattice
![LFEC3E-3FN256C](/images/manufacturer_photos/0/3/381/lattice_semiconductor_tmb.jpg)
Part Number:
Description:
FPGA LatticeEC Family 3100 Cells 340MHz 130nm (CMOS) Technology 1.2V 256-Pin FBGA
Manufacturer:
LATTICE SEMICONDUCTOR
Datasheet:
![LFEC3E-5TN144C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
FPGA - Field Programmable Gate Array 3.1K LUTs Pb-Free
Manufacturer:
Lattice
Datasheet:
![LFEC3E-3QN208C](/photos/16/15/161504/qfp208_tmb.jpg)
Part Number:
Description:
FPGA - Field Programmable Gate Array 3.1K LUTs
Manufacturer:
Lattice
Datasheet:
![LFEC3E-3F256I](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
FPGA LatticeEC Family 3100 Cells 340MHz 130nm (CMOS) Technology 1.2V 256-Pin FBGA
Manufacturer:
Lattice
Datasheet:
![LFEC3E-3TN100C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 67I/O 100-TQFP
Manufacturer:
Lattice
Datasheet:
![LFEC3E-3TN144I](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 97I/O 144-TQFP
Manufacturer:
Lattice
Datasheet:
![LFEC3E-4TN144C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 97I/O 144-TQFP
Manufacturer:
Lattice
Datasheet:
![LFEC3E-3F256C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 160I/O 256-BGA
Manufacturer:
Lattice
Datasheet:
![LFEC3E-5TN100C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 67I/O 100-TQFP
Manufacturer:
Lattice
Datasheet:
![LFEC3E-4QN208C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 145I/O 208-PQFP
Manufacturer:
Lattice
Datasheet:
![LFEC3E-4F256C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 160I/O 256-BGA
Manufacturer:
Lattice
Datasheet:
![LFEC3E-4FN256C](/images/manufacturer_photos/0/3/380/lattice_tmb.jpg)
Part Number:
Description:
IC FPGA 3.1KLUTS 160I/O 256-BGA
Manufacturer:
Lattice
Datasheet: