PK202-25 Matrix Orbital, PK202-25 Datasheet - Page 10

• Manufacturer Part Number: PK202-25
• Description: LCD Character Display Modules Black Background Yel/Grn Text
• Manufacturer: Matrix Orbital
• Series: PK202-25r

Specifications of PK202-25

• Character Count X Line: 20 x 2
• Module Size (w X H X T): 116 mm x 37 mm x 25.73 mm
• Background Color: Black
• Backlight Type: LED Yellow / Green
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.1.1 Power Connections
VDC ±0.25V. As an alternate power conncetion, power may also be supplied via the RS-232 connector as
described in section 2.1.4.
Connector pinout is as follows:
2.1.2 Five Volt Modules
do this! Wiring for the PC power connector and that required for the display are different as shown in the
Figure below.
Matrix Orbital
Power is applied via pin1 and ground via pin 4 as shown in the figure below. Power requirement is +5
If the display is used in a PC it becomes tempting to plug a spare power connector into the unit. Don’t
Pin 1
Pin 2
Pin 3
Pin 4
WARNINGS
• Do not apply any power with reversed polarization.
• Do not apply any voltage other than the specified voltage.
• Do not use any cables other than the cables supplied by Matrix
• Do not apply voltage to the DB-9 connector AND power connector
• Do not apply more than +5Vdc to pin 9 on the DB-9 connector.
Orbital, unless aware of the modifications required.
+5.0 VDC (+7 to +15 VDC with wide voltage option)
Figure 3: Power Connector
Table 3: Connector Pinout
1234 1234
SCL (I
SDA (I
PK202-25
Ground
2
2
C clock), Rx
C data), Tx
6