Matrix Orbital LCD/VFD Legacy User Manual
Page 2
Connecting LCD2021
Regular Voltage
Power is applied to the white or brown four pin SIP connector as follows:
Pin 1: +5V DC
Pin 2: =SCL (I²C Clock)
Pin 3: =SDA (I²C Data)
Pin 4: Gnd
If the sole data source is via the RS-232, the data input is via the DB-9 connector. Pins 2 and 3 are not used.
Wide Voltage Option
Power is applied to the white or brown four pin SIP as follows:
Pin 1: +8-15V DC
Pin 2: =SCL (I²C Clock)
Pin 3: =SDA (I²C Data)
Pin 4: Gnd
If the sole data source is via the RS-232, the data input is via the DB-9 connector. Pins 2 and 3 are not used.
(LCD2041)
W
ARNING
:
D
O
NOT
APPLY
ANY
POWER
WITH
REVERSED
POLARITY
.
D
O
NOT
APPLY
ANY
VOLTAGE
OTHER
THAN
THE
SPECIFIED
V
OLTAGE
.
D
O
NOT
USE
ANY
CABLES
OTHER
THAN
THE
CABLES
SUPPLIED
BY
M
ATRIX
O
RBITAL
C
ORPORATION
UNLESS
YOU
ARE
AWARE
OF
THE
MODIFICATIONS
REQUIRED
.
D
O
NOT
UNDER
ANY
CIRCUMSTANCES
USE
AN
UNMODIFIED
FLOPPY
DRIVE
POWER
CABLE
.
2