LCD0821 Matrix Orbital, LCD0821 Datasheet - Page 10

• Manufacturer Part Number: LCD0821
• Description: LCD ALPHA/NUM DISPL 8X2 YW/GN BK
• Manufacturer: Matrix Orbital
• Series: LCD0821r

Specifications of LCD0821

• Display Type: TN - Twisted Nematic
• Display Mode: Transmissive
• Number Of Digits/alpha: 16
• Outline L X W X H: 58.00mm x 32.00mm x 21.00mm
• Viewing Area: 38.00mm L x 16.00mm W
• Backlight: LED - Yellow/Green
• Display Format: 8 x 2
• Character Size: 5.55mm H x 2.95mm W
• Character Format: 5 x 7 CURS
• Voltage - Supply: 5.0V
• Dot Size: 0.55mm W x 0.55mm H
• Interface: I²C, RS232, TTL
• Operating Temperature: 0°C ~ 50°C
• Character Count X Line: 8 x 2
• Module Size (w X H X T): 58 mm x 32 mm x 25 mm
• Fluid Type: STN
• Background Color: Yellow / Green
• Backlight Type: LED Yellow / Green
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 635-1009; LCD082

The RS-232 connector on the PC cable is wired so that a standard “straight through” serial cable may be
used to connect the module to a standard serial port such as COM ports on PCs. Note that this device
complies with the EIA232 standard in that it uses signal levels from ± 3V to ± 12V. It will not operate
correctly at TTL (0 to +5V) levels.
2.1.3 Applying Power via the RS-232 Connector
The power connector on the PC cable is wired as shown in Figure 2-7. Power may be provided to the
module by pin 1 of the 3pin strip header connector instead of through the 4-pin SIP. If power is to be
applied using the 3 pin strip header.
2.1.4 TTL Communications
The LCD0821 does not communicate with TTL by default, the following modification must be made:
Solder the jumper in the picture below:
2.1.5 Configuring RS-232 and I
RS-232 baud rate and I
LCD0821 rev 2
Pin Number
on LCD
2
C address are configured by means of jumpers.
1
2
3
Pin Number
on Host
N/A
Figure 2-8 TTL modification
3
5
Figure 2-9 RS-232 jumpers
2
C
to LCD module
10
Direction
-
-
Description
Ground
Data In
+5Vdc