LK404-25-E Matrix Orbital, LK404-25-E Datasheet - Page 12

• Manufacturer Part Number: LK404-25-E
• Description: LCD Character Display Modules 40x4 Grn/Yel Ext Temp
• Manufacturer: Matrix Orbital

Specifications of LK404-25-E

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

2.3 Protocol Select Jumpers
display module between RS-232, TTL and I
with solder jumps on the 232 jumpers. In order to place the display module in I
remove the solder jumps from the 232 jumpers and then place them on the I2C jumpers. The display will
now be in I
to change the display to TTL mode, simply remove the zero ohm resistors from the 232 or I
solder them to the TTL jumpers.
2.4 General Purpose Outputs
General Purpose Output, which can provide up to 20 mA of current and +5Vdc from the positive side of
the GPO. This is limited by a 240 ohm resistor which is located to the above right of the GPOs as pictured
below in
a relay) and has an internal resistance of its own greater than 250 ohms, then the 240 ohm resistor may be
removed and replaced with a Jumper.
Matrix Orbital
The Protocol Select Jumpers, pictured below in
A unique feature of the LK404-25 is the ability to control relays and other external devices using a
figure 18
2
C mode and have a default slave address of 0x50 unless it has been changed. Similarly, in order
Backlight Off Supply
. If the device, which is being driven by a GPO, requires a relatively high current (such as
Supply Voltage
Backlight On
WARNINGS
• Do not apply any power with reversed polarization.
• Do not apply any voltage other than the specified voltage.
Figure 14: Protocol Select Jumpers
Table 1: Power Requirements
+5Vdc ±0.25V
2
Standard
C protocols. As a default, the jumpers are set to RS-232 mode
LK404-25
figure 14
190 mA typical
+9V to +15V
, provide the means necessary to toggle the
20 mA
-V
+9V to +35V
-VPT
2
C mode you must first
2
C jumpers and
8