RS-232 Displaycontroller TERM-404 Page 1 of 3
-Especially designed for 40* 4AN display
-Piggyback assembly intended
-Dimensions 54 mm (= display height) * 52 mm
-Optional connection for 4 keys
-Backlight adjustable to 4 brightness levels
-Transmission speed 2400 ? 19200 baud
-Simple instruction format
-Reset: Power-on-Reset and Reset by interface line (DTR)
RESET function
Besides the Auto-RESET function
(RC combination), the controller can be
reset by means of the DTR line.
DTR on (+12V)?RESET active
DTR on (-12V) ?RESET inactive
*If this function is not required, the ?reset
transistor? has to be removed.
The RS-232-controllers of the TERM range are
especially designed for alphanumeric displays (TERM-
404 = 40 characters * 4 lines, piggyback assembly). They
are particularly suitable for the easy connection of the
displays to the microprocessor system over far distances.
The complete display administration as well as the
activation of the backlight is taken over by the ?TERM-
404?. The backlight is adjustable to 4 brightness levels
by software.
4 keys (T1..T4) can be connected, whose actuation is
output at the serial interface, encoded as capital letters
(A..D.)
.
Power supply:
+5V / 20 mA
LCD-Backlight:
The resistance RLED must be installed according to demand.
Baud rate adjustment: Soldered bridges B1 B2 Baud rate
Soldered bridges on the closed closed 2400 Bd
rear side of the circuit closed open 4800 Bd
board open closed 9600 Bd
open open 19200 Bd
The transmission frame is specified:
1 startbit
8 data bits
1 stopbit No parity bit is used.
RS-232 Displaycontroller TERM-404 Page 2 of
3
Data transmission to the display unit:
Font:
The transmitted characters are represented by the font of the LCD display.
T1 T2 T3 T4
A B C D
Data transmission by means of a keyboard:
Up to 4 keys can be connected
.
Encoded as capital letters, the keyboard data are output
at the RS-232 interface.
.
IBO 15.09.03
RS-232 Displaycontroller TERM-404 Page 3 of
3
Display control: (the respective commands are valid for the currently selected segment only)
Operating modes and the direct cursor positioning are sent to the display unit via commands of the following
instruction table.
These instructions are packaged between ESC (1Bh) and CR (0Dh)
.
The command to switch on the blinking cursor, for example, looks like that: esc BON cr
Cursor movements and clearing instructions are directly sent to the display unit as byte commands by means of
so-called CTRL-codes.
CTRL-codes:
CTRL-B : 02h : Home : Cursor into HOME position (left top)
CTRL-L : 0Ch : CLS Clear display and cursor into HOME position
Instruction table:
BOF turns the blinking cursor off
BON switches the blinking cursor on
COF turns off the cursor as a bar
CON switches on the cursor as a bar
DOF turns the display off (data are maintained)
DON switches the display on
GTOxx the cursor moves to the position xx
xx: = line column
Line: 0 . .
3
Column: @ . .
g
(30h . . 33h)
(40h . . 67h)
0e 0f 0g
1e 1f 1g
2e 2f 2g
3e 3f 3g
Example: GTO1F
moves the cursor to the 7th column of the 2nd
line
0@ 0A 0B
1@ 1A 1B 1F
2@ 2A 2B
3@ 3A 3B
LMPx switches the backlight on at level x, (x: = 0 . . 4)
UDCxa..h user defined character: generates a self-defined character in a 5*(7 + cursor) matrix.
At most 8 characters can be defined.
x = character number (0..7)
a..h = binary data of the character (bits 5..7 are not relevant)
these characters are represented as ASCII-Code 80h..87h within the LCD font.
SG1 Command to switch to 1. display segment (line 1 and 2)
SG2 Command to switch to 2. display segment (line 3 and 4)
If you have it, give it a try!
If you getting errors or no lines you can check it with the test driver.
I think that is a LCD module with a serial (rs232) converter module.
There is a possibility to connect it without usinig the converter in parallel connection (for Hitachi 44780 based LCD module or compatible)
That looks like a rs232 serial to parallel converter. The atmel can be programmed to do this. But is it a directly converting the incoming rs232 and sending it through parallel to the lcd or is it "interpreting" commands from rs232 and doing its own communication to the LCD. The reason I ask is that the command set may be changed by that RS232 Converter.
The LCD piggyback you can buy that changes a parallel lcd to a serial has its own command sets. Look at http://www.seetron.com/slcds.htm
i asked the seller for more information but all what he can say is that the lcd
was in use with linux.
i can get it for 50 ? second hand but i think that i won`t buy it...
ah, i got a little bit more info. programmed is possible. details for the controlerchip. http://ibo-ott.de/extdoc/CHIP_TERM_1-1-E.PDF
but i want to use the switches this the reason for me to buy this lcd.
ok,
i received the lcd and found an programmer for the the amtel.
but he needs details to programm the amtel......
know somebody where i can find the information so that he can do it ?
if possible with the buttons like the matrix lcd`s but with 4*40 ?
Are you trying to reprogram the atmel that come on the LCD?
yes, i ask the dealer who sells this lcd here and he offers to reprogram the amtel on the lcd. but i don`t know how much money it will cost because he needs more information.
hi,
i got the lcd with the 4 buttons to run.....
but only the 2 top lines and not the 2 under.
i use the 4*40 matrix and crystalfontz settings but i can only use the top 2 lines.
