LS-E250E-BASE-PC-N Lattice, LS-E250E-BASE-PC-N Datasheet - Page 16

• Manufacturer Part Number: LS-E250E-BASE-PC-N
• Description: MCU, MPU & DSP Development Tools ispLEVER Base LMico 32/DSP Dev Kit ECP2
• Manufacturer: Lattice

Specifications of LS-E250E-BASE-PC-N

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
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
Key Matrix
The board also features a key matrix with 12 push-buttons, which are not debounced. They must be driven with
three column lines and can be read with four rows. The following table shows the connections.
SW315
Switch
right
Pin
Pin
C
D
A
B
1
3
1
2
3
4
SEG_A#
SEG_B#
SEG_C#
SEG_D#
SEG_CA0#
Signal Name
Signal Name
Signal Name
LED0#
LED1#
LED2#
LED3#
DSW0
DSW2
FPGA Pin
FPGA Pin
FPGA Pin
M24
M22
M21
N23
K21
E26
R24
R23
R22
R21
F26
F
E
16
G
D
A
SW316
Switch
B
C
Pin
Pin
DP
left
G
E
F
2
4
5
6
7
8
LatticeMico32/DSP Development Board
SEG_E#
SEG_F#
SEG_G#
SEG_DP#
SEG_CA1#
Signal Name
Signal Name
Signal Name
LED4#
LED5#
LED6#
LED7#
DSW1
DSW3
for LatticeECP2 User’s Guide
FPGA Pin
FPGA Pin
FPGA Pin
M20
K22
K20
F25
E25
P23
P22
P21
N22
L22
L21