LFXP2-5E-B-EVN Lattice, LFXP2-5E-B-EVN Datasheet - Page 6

• Manufacturer Part Number: LFXP2-5E-B-EVN
• Description: MCU, MPU & DSP Development Tools LatticeXP2 Brevia Dev kit
• Manufacturer: Lattice
• Series: -r
• Type: FPGAr

Specifications of LFXP2-5E-B-EVN

• Processor To Be Evaluated: LFXP2-5E-6TN144C
• Data Bus Width: 8 bit
• Interface Type: RS-232, JTAG, SPI
• Operating Supply Voltage: 3.3 V
• Silicon Manufacturer: Lattice Semiconductor
• Silicon Family Name: LatticeXP2
• Kit Contents: Evaluation Board, USB Cables, AC Adapter, Quick Start Guide
• Features: Serial RS232 Interface, JTAG Interface
• Svhc: No
• Rohs Compliant: Yes
• Contents: Board, Cables, Documentation, Power Supply
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: LFXP2-5E-6TN144C

Lattice Semiconductor
Read DIP Switch Bank
The LatticeMico8 has the ability to read the state of switches 1-4 on the DIP switch bank. The pushbutton switches
are can also be read. Each pushbutton press toggles the internal state of a register in the FPGA. The current state
of the register is displayed on the high nibble of the output. The hexadecimal representation of the switches is
printed and logged to the SRAM. A DIP switch that is set ON has a '0' value, and one that is OFF has a value of '1'.
To read the DIP switch:
1. From the terminal window press 2.
Read Data History from SRAM
Use the Read Data History from SRAM command to see the results from each command that is logged to the
SRAM memory. The output from this command does not get written into the SRAM.
To read data history from SRAM:
1. From the terminal window press 3. The transaction log is listed.
Copy Data History from SRAM to SPI Flash Memory
This command erases a portion of the SPI ROM, and stores the command results logged in the SRAM. The
LatticeMico8 starts writing from SRAM address 0x000000 and continues writing values into the SPI ROM until it
reaches the last valid entry in the SRAM.
To copy data history from SRAM to SPI Flash memory:
1. From the terminal window press 4. The data log is transferred and the terminal indicates “Done”.
Example:
SW:0x00
Example:
SRAM:
Example:
SRAM => SPI:
Done.
0x44
0x00
0x44
0x00
(SRAM ADDR:0x0000C)
6
LatticeXP2 Brevia Development Kit
User’s Guide