LFE2-20E-5FN256I Lattice, LFE2-20E-5FN256I Datasheet - Page 708

• Manufacturer Part Number: LFE2-20E-5FN256I
• Description: IC FPGA 21KLUTS 193I/O 256FPBGA
• Manufacturer: Lattice
• Series: ECP2r

Specifications of LFE2-20E-5FN256I

• Number Of Logic Elements/cells: 21000
• Number Of Labs/clbs: 2625
• Total Ram Bits: 282624
• Number Of I /o: 193
• Number Of Gates: -
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 256-BGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 220-1170; LFE2-20E-5FN256I; Q6411457

Lattice Semiconductor
LatticeECP2/M sysCONFIG Usage Guide
Figure 15-5. SPI Serial Flash Device Window
Second, click on Browse to select an output file name.
Third, select the operation, such as SPI Flash Erase, Program, Verify.
Fourth, select the golden file and primary file. Note that these may be encrypted for the LatticeECP2/M “S” version
or non-encrypted files. If they are encrypted files they must both be encrypted with the same key.
And finally, click on the Generate button. When file generation is complete, click on OK to get back to the main
ispVM window. To program the file into the SPI Serial Flash just click on the GO button on the toolbar.
At power-up, when the PROGRAMN pin is toggled, or when a JTAG Refresh instruction is issued, the
LatticeECP2/M reads the primary file from SPI Serial Flash. If a CRC error is found then the LatticeECP2/M will re-
boot automatically, reading configuration data from the golden file instead of the primary file. Note that if an error is
found in the golden file the LatticeECP2/M will drive the INITN pin low and stop trying to configure.
Note that the flow specified here is for initial programming of the SPI Serial Flash. During a field update of the SPI
Serial Flash it is expected that only the primary configuration file will be updated, not the golden file. This is impor-
tant because it guarantees the availability of a known good configuration file.
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