EA KIT240-7LWTK ELECTRONIC ASSEMBLY, EA KIT240-7LWTK Datasheet - Page 4

• Manufacturer Part Number: EA KIT240-7LWTK
• Description: LCD Graphic Display Modules & Accessories Blue/White Contrast RS-232 Snap-In Kit
• Manufacturer: ELECTRONIC ASSEMBLY

Specifications of EA KIT240-7LWTK

• Pixel Density: 240 x 128
• Module Size (w X H X T): 144 mm x 104 mm x 39 mm
• Viewing Area (w X H): 114 mm x 64 mm
• Backlighting: LED
• Background Color: Blue, White
• Attached Touch Screen: No
• Product: Graphic LCD Module
• Style: LCD Graphic Display
• Interface: RS-232
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

EA KIT240-7
BAUD RATES
The baud rate can be set by means of the 3 DIP switches on the left. 9,600 baud
is set at the factory (DIP 3 ON). Please note that the internal data buffer only
holds 22 bytes. It is therefore imperative that the RTS handshake line be
queried (a level of +10V means data can be accepted; a level of -10V means the
display is busy). The data format is fixed at 8 data bits, 1 stop bit and no parity.
WRITE PROTECTION FOR PROGRAMMED
You can use DIP switch 6 to prevent the programmed
macros, images and fonts from being inadvertently
overwritten.
RS-232/RS-422 CONNECTION
The graphics kit is shipped with an RS-232 interface as standard. The pin assignment of the plug
connector (J3) is as shown in the table on the left. The J3 has a 2.54mm grid. If the graphics kit is
SUPPLY VOLTAGE / EA OPT-9/35V
In the standard model, the supply voltage of +5V is fed in via screw-type terminal J1. In the case of the
version for 9..35V (EA OPT-9/35V), the power is supplied via J2.
Pin Symb In/Out
4
10
1
2
3
4
5
6
7
8
9
MACROS
RS-232 J3 connection
VDD
DCD
DSR
GND
CTS
RTS
DTR
RxD
TxD
-
Out
Out
In
In
-
-
-
-
-
-
+ 5V supply
Strap to DTR
Strap to DTR
Transmit data
Clear to send
Receive data
Request to send
See pin 2, pin 3
NC
0V ground
Function
ordered together with the EA OPT-RS4224
optional component, RS-422 drivers are
fitted. In this case, the pin assignment is as
shown in the table on the right.
The same serial data with 5V levels and
TTL logic is available at the J5 eyelet strip.
These levels are suitable for direct
connection to a µC. However, if these
signals are used, modules 202 and 75176
must be removed.
Achtung !
Handhabungs-
vorschriften
beachten
Elektrostatisch
gefährdete
Bauelemente
DIP
OFF
ON
Write protection
6
No macro progr. possible
Macro progr. possible
Write protection
EEPROM
On
Off
for
Important: It is imperative that
the polarity is correct. Polarity
reversal, even for a very short
time, can cause the immediate
destruction of the entire display.
Pin Symbol In/Out
10
1
2
3
4
5
6
7
8
9
RESET
TxD5
VDD
GND
SDA
RTS
CTS
SCL
RxD
VU
Pin
10
1
2
3
4
5
6
7
8
9
RS-422 J3 connection
Data Out+ Transmit data
Data Out- Transmit data
OFF
OFF OFF
OFF
OFF OFF OFF
Symbol
Data In+ Receive data
HS Out+ Handshake
DIP switches
HS Out-
Data In-
ON
ON
ON
ON
J5 add-on
HS In+
1
In/Out I2C bus, data
HS In-
VDD
GND
Out
Out
Out
In
In
In
-
-
-
OFF
OFF OFF
ON
ON
ON
ON
2
Baud rates
9..35V supply
+ 5V supply
0V, ground
Transmit data
Receive data
Request to send
Clear to send
H: reset
I2C bus, clock
OFF
OFF
ON
ON
ON
ON
3
+ 5V supply
Receive data
Handshake
Handshake
Handshake
0V ground
Function
Function
Data format
115200
19200
38400
57600
8,N,1
1200
2400
4800
9600