8
ispMACH 4000ZE Pico Development Kit
Lattice Semiconductor
User’s Guide
Download PicoView Software and I
2
C GPIO Expansion Demo
The following steps require a host PC with a USB port configured to communicate with the Pico board. Before you
begin, you will need to obtain the I
2
C interface program, PicoView, and the I
2
C GPIO Expansion demo design, from
the Lattice web site.
1.
Browse to
www.latticesemi.com/4000ze-pico-kit
.
2.
Select the PicoView for Windows Software download, review the software license agreement, save the ZIP file
to your system, and unzip it to a location on your PC. For example: c:\4000ze-pico-kit. The ZIP archive contains
picoview.exe.
3.
Select the I
2
C GPIO Expansion Demo download, save the ZIP file to your system, and unzip it to a location on
your PC. For example: c:\4000ze-pico-kit.
Connect to the Pico Evaluation Board
In this step, connect the evaluation board to your PC using the USB cable provided. Once connected you can use
ispVM System software to reprogram the Pico board or use PicoView software to interact with the interface regis-
ters of the I
2
C GPIO Expansion demo.
Connect one USB cable from a USB port on your PC to the board’s USB-to-I
2
C interface socket on the side of the
board as shown in the PCB diagram. After connection is made, a blue Power LED will light up indicating the board
power is now supplied from the USB cable.
Reprogram the Pico Evaluation Board
The Power demo design is pre-programmed into the Pico board by Lattice. To program the Pico board with the I
2
C
GPIO Expansion Design, use ispVM System software. This step requires that ispVM System be installed. For more
information see
www.latticesemi.com/products/designsoftware/ispvmsystem
.
1.
If not already connected, follow the procedure above to connect the Pico board and install hardware drivers.
The USB cable must be attached and powered to enable the Pico board I
2
C channel and JTAG programming
interface.
2.
From the
Start
menu run
ispVM System
. ispVM appears.
3.
Choose
Options > Cable
and
IO Port Setup...
The Cable and I/O Port Setup dialog appears.
4.
Specify the following:
Cable Type:
USB2
Port Setting:
FTUSB-0
Click
OK
5.
Choose
c:\4000ze-pico-kit\gpio-demo.jed
. The New Scan Configuration Setup window appears. The
LC4256ZE appears in the device list.
6.
Right-click the
LC4256ZE
entry and choose
Edit Device...
The Device Information dialog appears.
7.
From the
Data File
section, click the
Browse
button. The
Open Data File
dialog appears.
8.
Browse to the
c:\4000ze-pico-kit\gpio-demo
folder, select
gpio-demo.jed
, and click
Open
. From the
Opera-
tion
list choose
Erase, Program, Verify
and click
OK
.
9.
Right-click the
ispPAC-POWR6AT6
row, from the
Set Device Operations
menu, choose
Bypass
.
10. Choose
Project > Download
. ispVM reprograms the Pico board. Programming requires about 20-40 seconds.
A small timer window will appear to show elapsed programming time. At the end of programming, the configu-
ration setup window should show a
PASS
in the
Status
column.
