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LatticeMico32/DSP Development Board
Lattice Semiconductor
User’s Guide
7-Segment Display
The 7-segment display is wired as follows:
Table 17. 7 Segment Display U0502 Pin Definition
The signals of the 7-segment display are low-active, which means that with a logic ‘0’, the segment is lit. SEG A# ...
SEG F# and SEG DP# drive not only the two 7-segment displays, but also the LCD. To write different data to these
three components, the user must drive the signals alternately to the components. This can be realized with the sig-
nals SEG CA0#, SEG CA1# and LCD ENABLE. They serve to activate the two 7-segment displays and the LCD,
respectively.
DIP Switches
There is a 4-bit DIP switch on the board. When the switch is turned to the on position, a logic ‘1’ will be seen. The
connections are in Table 18.
Table 18. DIP Switches SW0514 Connection
LEDs
Eight LEDs can be used for custom status signaling. They are low-active; with a logic ‘0’ the LED is on. You can
control the LEDs via the signals below.
Table 19. LED LD0501 ... LD0508 Connection
Pin
Signal Name
FPGA Pin
Pin
Signal Name
FPGA Pin
A
SED_A#
M3
E
SED_E#
N2
B
SED_B#
M4
F
SED_F#
N3
C
SED_C#
M5
G
SED_G#
N4
D
SED_D#
N1
D, P
SED_DP#
N5
left
SED_CA0#
P1
right
SED_CA1#
P2
common
common
Switch
Signal Name
FPGA Pin
Switch
Signal Name
FPGA Pin
SW315
SW316
1
DSW0
R2
2
DSW1
R3
3
DSW2
R4
4
DSW3
R5
Pin
Signal Name
FPGA Pin
Pin
Signal Name
FPGA Pin
1
LED0#
E3
5
LED4#
F5
2
LED1#
E4
6
LED5#
G4
3
LED2#
E5
7
LED6#
G5
4
LED3#
F4
8
LED7#
H5
A
B
C
D
E
F
G