LFEC3E-3QN208I Lattice, LFEC3E-3QN208I Datasheet - Page 463

• Manufacturer Part Number: LFEC3E-3QN208I
• Description: IC FPGA 3KLUTS 208PQFP
• Manufacturer: Lattice
• Series: EC3r

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

Lattice Semiconductor
Programming Procedure
In order to program SPI Serial Flash via ispJTAG the FPGA must contain the Soft SPI Interface. Programming the
SPI Serial Flash with ispVM System and an ispDOWNLOAD cable makes this transparent to the user. The soft-
ware simply loads a default Soft SPI Interface bitstream into the FPGA and then loads the user bitstream into the
Flash. Once programing of the SPI Serial Flash is complete the FPGA configures itself by reading the Flash. Again,
software makes all of this transparent to the user so that it is no different than programming any other serial boot
device.
The following instructions describe the process of selecting the FPGA, selecting the SPI Serial Flash, and pro-
gramming the SPI Serial Flash. The following screen shots are from ispVM System 15.0.
Figure 21-3. Main Window, Scan Complete
1. Connect the ispDOWNLOAD Cable to the appropriate header and apply power to the board.
2. Start the ispVM System software.
3. From the main window click on the Scan button located on the toolbar. The LatticeECP/EC device should
4. Double-click the number in the Index column and select the appropriate device to open the Device Infor-
be detected automatically (if it’s not detected, check the ispJTAG connections and make sure the board is
powered up). The resulting screen should be similar to Figure 21-3.
mation window, shown in Figure 21-4.
21-7
SPI Serial Flash Programming Using ispJTAG
on LatticeECP/EC FPGAs