ELECTRONIC ASSEMBLY EA DOGS104N-A Datasheet

Issue 05.2019

EA DOGS104-A

4x10/2x10 incl. SSD1803A for SPI, I²C

available at 1 piece!

Switchable font height

Dimension 36,0 x 27.5 x 4.6 mm

TECHNICAL DATA

* HIGH-CONTRAST LCD SUPERTWIST DISPLAY
* OPTIONAL LED BACKLIGHT UNITS IN DIFFERENT COLORS
* 4x10 CHARACTER WITH 2.6 mm SWITCHABLE TO 2X10 WITH 4.55 mm HEIGHT
* SSD1803A CONTROLLER FOR SPI (2-/3-/4-WIRE) AND I²C (2-WIRE) INTERFACE
* SINGLE POWER SUPPLY +3.3V (typically 440µA)
* NO ADDITIONAL VOLTAGES REQUIRED
* OPERATING TEMPERATURE RANGE -20 THROUGH +70°C
* LED BACKLIGHT 3 ..45mA@3.3V
* NO MOUNTING REQUIRED, SIMPLY SOLDER INTO PCB
* 3 DIFFERENT CHARACTER SETS (CYRILLIC, ENGLISH-JAPANESE AND

EUROPEAN) INCLUDED IN THE SAME CONTROLLER

* 2 VIEWING DIRECTION POSSIBLE (BOTTOM AND TOP VIEW)

ORDERING CODE

LCD MODULE 4x10 - 2.6 mm EA DOGS104x-A

x: B = blue background transmissive

W = white background transfelctive
N = white background reflective

LED-BACKLIGHT AMBER EA LED36X28-A
LED-BACKLIGHT YELLOW-GREEN / RED EA LED36X28-GR
LED-BACKLIGHT GREEN/ RED/ WHITE EA LED36X28-ERW

ACCESSORIES

USB-TESTBOARD FOR PC (WINDOWS) EA 9780-4USB
SOCKET CONNECTOR 4,8mm HOCH (2 PCS REQUIRED) EA FL-10P

EA DOGS04-A

EA DOG SERIES

With its EA DOG series, ELECTRONIC ASSEMBLY presents the world’s first display series which
will run on 3.3 V systems without auxiliary power.
Unlike normal LCD modules, you order the display and the corresponding backlight separately. This
gives you a wealth of possible combinations.
Designed for compact hand-held devices, this modern LCD range provides a number of real benefits
with or without backlight:

* extremely compact at 36,0x27,5 mm at the standard font size of 2.6 mm (4 x 10)
* ultra-flat at 2.0 mm without backlight or 4.6 mm including LED backlight
* SPI interface (2-/3-/4-wire) and I²C (2-wire)
* typical power consumption of only 440µA in full operation (LED white backlight as of 3mA)
* easy installation by simply soldering into the board
* A whole range of design variants can be supplied as of single units
* Changing background color

LED BACKLIGHTS

3 different variants are available for
individual backlighting: amber, yellow­green/red, green/red/white.

For the amber backlight, 2 separate LED
paths are available, which can be switched
in parallel or in series to ideally match the
system voltage. This means that all the
backlights can be run either at 3.3 V and
higher voltages.

Operation of the backlight requires an
external series resistor for current limiting.
This can be calculated by R=U/I; you will
find the values in the table. To improve life
time it is recommanded to use a current
source only.

The operating life of the yellow/green, red
and amber backlights is 100,000 hours and
that of the white backlight is a bit shorter.
Important: Never operate the backlight
directly on a 5 V/3.3V supply, as this can
immediately destroy the LEDs!

ambe r

EA LED36x28-A

Connected in parallel 2,1 V 60 mA 20 ohm 48 ohm

Connected in series 4,2 V 30 mA - 27 ohm

green/red/white

EA LED36X28-ERW

green path 3,0V 45 mA 7 ohm 45 ohm

red path 2,1 V 45 mA 27 ohm 65 ohm

white path 3,0 V 30 mA 10 ohm 67 ohm

yellowgreen/red

EA LED36x28-GR

red path (AGR/CR) 2,1 V 45 mA 27 ohm 65 ohm

yellowgreen path (AGR/CG) 2,1 V 60 mA 20 ohm 48 ohm

Forward

voltage

Forward

voltage

Forward

voltage

Current

max.

Current

max.

Current

max.

Limiting resistor

@3,3V @5V

Limiting resistor

@3,3V @5V

Limiting resistor

@3,3V @5V

INSTALLATION

First, the display and the corresponding backlight are clipped together. The complete unit is then
inserted into a PCB and soldered. Note that the 4 pins for the backlight must also be soldered from
the top with less tin.
Important: There are one or two protective films on the display (top and/or rear side) and one on
each backlight. Those have to be removed during or after production.

Page 2

ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.

Printing and typographical errors reserved.

EA DOGS104-A

3 DIFFERENT TECHNOLOGIES

As a standard we provide 3 different technologies as STN and FSTN:

display type technology

FSTN pos.

transflective

STN neg. blue

transmissive

FSTN pos.

white

reflective

optional

backlight

it's fi ne with and

without backlight

usage only with

backlight

no backlight

possible

readability

readable even

without backlight

--- ---

finest readble

without backlight

display color

non

backlighted

black on white

black on white --- ---

display color

backlighted

black on backlight

color

white backlight on

blue b ackground

recomended

backlight color

all

white

3 DIFFERENT BACKLIGHTS

3 different backlight modules are available to match equipment’s design as much as possible. The
most effective and brightest one is the white part of EA LED36x28-ERW.

EA LED36x28-ERW

Tri-color green red white

EA LED36x28-A

Amber

EA LED36x28-GR

Bi-color yellow-green red

When you can see black and white pictures only here on this page then you're able to download a
coloured version from our website

http://www.lcd-module.de/eng/pdf/doma/dogs104e.pdf

USB-TEST BOARD EA 9780-4USB

For easy startup, a USB test board is available that can be connected to a PC. An USB cable and a
Windows software is supplied with the product. This allows individual text and to be displayed directly
on the connected display.

SIMULATION WITH WINDOWS

Without ordering a display, the simulator software may show all the displays and colors even without
the hardware. You can download for free from our website. There’s no need to install, it’s a simple
EXE file, also running from USB stick e.g.

http://www.lcd-module.de/deu/disk/startdog_V40.zip

Printing and typographical errors reserved.
ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.

Page 3

EA DOGS04-A

APPLICATION EXAMPLES

Different wiring must be used depending on the interface.
Note that the COG technology means that the current capacity of the outputs is limited. Therefore, a
large load on the bus may cause signal loops and unclean levels. If in doubt, additional pull-down
resistors (8051) are required or additional waits/NOPs must be incorporated.

To guarantee an error-free functionality and initialization of display it is recommended to operate the
reset input actively. This can be done via microcontroller port or external circuit. Here’s an application
example:

INITIALISATION EXAMPLE

Initialization Example SPI and I2C

Command

Function Set

Extended function set

Entry mode set

Bias setting

Function Set 0 0 0 0 1 1 1 0 0 1 $39 8 bit data length extension Bit RE=0; IS=1

Internal OSC

Follower control

Power control

Contrast Set

Function Set

Display On

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 He x

0 0 0 0 1 1 1 0 1 0

0 0 0 0 0 0 1 0 0 1

0 0 0 0 0 0 0 1 1 0

0 0 0 0 0 1 1 1 1 0

0 0 0 0 0 1 1 0 1 1

0 0 0 1 1 0 1 1 1 0

0 0 0 1 0 1 0 1 1 0

0 0 0 1 1 1 1 0 1 0

0 0 0 0 1 1 1 0 0 0

0 0 0 0 0 0 1 1 1 1

$3A 8 bit data length extension Bit RE=1; REV=0

$09 4 line display

$06 bottom view

$1E BS1=1

$1B BS0=1 -> Bias=1/6

$6E Devider on and set value

$56 Booster on and set contrast (DB1=C5, DB0=C4)

$7A Set contrast (DB3-DB0=C3-C0)

$38 8 bit data length extension Bit RE=0; IS=0

$0F Display on, cursor on, blink on

Remark

12:00 VIEWING ANGLE, TOP VIEW OPTION

If the display is read mostly from above (on the front of a laboratory power supply
unit, for example), the preferred angle of viewing can be set to 12 o’clock. This
rotates the display by 180°. A slightly different initialization setup is required for
this. The line address is incremented by 10.

Change view

Command

Function Set 0 0 0 0 1 1 1 0 1 0 $3A 8-Bit data length extension Bit RE=1; IS=0

Entry Mode

Function Set 0 0 0 0 1 1 1 0 0 0 $38 8-Bit data length extension Bit RE=0; IS=0

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 He x

0 0 0 0 0 0 0 1 BDC BDS

$0X $06=bottom view; $05 = top view

Remark

Orientation 6:00 (Bottom

Orientation 12:00 (Top

Page 4

ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.

Printing and typographical errors reserved.

EA DOGS104-A

SETTING THE CONTRAST

The contrast for the EA DOGS104-A can be set by command. This is done using bits C0 through C5
in the commands "Contrast Set" and "Power/Icon Control/Contrast Set". Generally, the contrast is set
once only. Thanks to the integrated temperature compensation function, it’s kept constant allover the
entire operating temperature range (-20 to +70°C).

Contrast set

Command

Function Set

Power control

Contrast Set

Function Set

DDRAM ADDRESS / LINE COUNT

The display controller SSD1803A affords the opportunity of double height fonts. The different line
combinationes with its corresponding initialization commands are shown in the following table.
The DDRAM address depends on line count and viewing direction.

RS R/ W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 He x

0 0 0 0 1 1 1 0 0 1

0 0 0 1 0 1 0 1 1 0

0 0 0 1 1 1 1 0 1 0

0 0 0 0 1 1 1 0 0 0

$39 8-Bit data length extension Bit RE=0; IS=1

$56 Booster on and set contrast (DB1=C5, DB0=C4)

$7A Set contrast (DB3-DB0=C3-C0)

$38 8-Bit data length extension Bit RE=0; IS=0

Remark

Bottom view DDRAM

ADDRESS
(0x80+adr)

0x00
0x20
0x40
0x60

0x00

0x20
0x40

0x00
0x20

0x40

0x00
0x20
0x40

Top view DDRAM

ADDRESS
(0x80+adr)

0x0A
0x2A
0x4A
0x6A

0x0A

0x2A
0x4A

0x0A
0x2A

0x4A

0x0A
0x2A
0x4A

Set line count
(RS = 0, R/W = 0)

0x38 ->Function set: DH = 0

0x3A ->Function set: RE = 1
0x1F -> 3 Lines top
0x3C ->Function set: RE = 0, DH = 1

0x3A ->Function set: RE = 1
0x17 -> 3 Lines middle
0x3C ->Function set: RE = 0, DH = 1

0x3A ->Function set: RE = 1
0x13 -> 3 Lines bottom
0x3C ->Function set: RE = 0, DH = 1

0x00

0x0A

0x3A ->Function set: RE = 1
0x1B -> 2 Lines

0x20

0x2A

0x3C ->Function set: RE = 0, DH = 1

Further information about the commands of the SSD1803A, please refer to the datasheet:

http://www.lcd-module.de/fileadmin/eng/pdf/zubehoer/ssd1803a_2_0.pdf

Printing and typographical errors reserved.
ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.

Page 5

EA DOGS04-A

CHARACTER SET

The controller has 3 built-in character sets. They can be selected with the command “ROM-Selection“
in the extended command set.

ROM A ROM B ROM C

Change character table

Command

Function Set

ROM S elect ion

Function Set

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 He x

0 0 0 0 1 1 1 0 1 0

0 0 0 0 0 010 0 1

1 0 0 0 0 0 R2 R1 0 0

0 0 0 0 1 1 1 0 0 0

$3A 8-Bit data length ex tens ion B it RE= 1

$72

$0X

$38 8-Bit dat a lengt h extension Bit RE=0

Remark

ROM s elect ion double byt e command
$00 = ROMA ; $04=ROMB; $0C=ROM C

CREATING YOUR OWN CHARACTERS

It’s possible to create 8 own additional characters (ASCII Codes 0..7) to the fixes ROM codes. Please
be informed, that RE- and IS-Bit need to be 0.

1.) The command "CG RAM Address Set" defines the ASCII code (Bit 3,4,5) and the dot line (Bit
0,1,2) of the new character. Example demonstrates creating ASCII code $00.

2.) Doing 8 times the write command "Data Write" defines line by line the new character. 8th. byte
stands for the cursor line.

3.) The new defined character can be used as a "normal" ASCII code (0..7); use with "DD RAM
Address Set" and "Data Write".

Character-data

Bit

7 6 5 4 3 2 1 0

0 0 1 0 0 $04

0 0 1 0 0 $04

0 1 0 0 $04

0

XXX

0 0 1 0 0 $04

1 0 1 0 1 $15

0 1 1 1 0 $0E

0 0 1 0 0 $04

0 0 0 0 0 $00

Hex

Command

CG-RAM address
set

Character-data

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 He x

0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0

1 0 x x x

Define own character

Remark

Set address of character $40=0; $48= 1;

$40

$54=2.. .$78=7

0 0 1 0 0

0 0 1 0 0

0 0 1 0 0

0 0 1 0 0

1 0 1 0 1

0 1 1 1 0

0 0 1 0 0

0 0 0 0 0

$04 first line

$04 second line

$04 third line

$04 fourth line

$15 fift h line

$0E sixth line

$04 seventh li ne

$00 eighth line, c ursor line

Page 6

ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.

Printing and typographical errors reserved.

EA DOGS104-A

SERIAL INTERFACE (SPI, MODE3)

The serial interface always needs a synchronization byte. In write mode, the byte to send hast to be
devided in two bytes, into the “lower data“ and “upper data“. Please refer to the chart below. The maximum
clock frequency for SCLK is 1 MHz.

I²C INTERFACE

The display can be assigned to the slave adress 0x78 (0x3C) if pin SA0 is connected to VSS or 0x7A
(0x3D) if SA0 is high. After transfering the start condition, the hardware adress, togehter with the
Read(1)/Write(0) bit has to be transmitted. While writing to the display, after the slave adress, there
always is a control byte holding the
information Data(1) or Command(0) and
the continuation bit. If the continuation bit
is set to 0, the following bytes are data
bytes until the next stop condition occurs.
The maximum clock rate for I²C bus is
400 kHz.
Please be informed, that the pins
SDA+SCK contain an internal resistance
of 600 to 1000 Ohm, or even more
(Important, because of the LO-level while
reading data and the ACK-Bit).

Further information about the interfaces and the timing of the SSD1803A, please refer to the datasheet

http://www.lcd-module.de/fileadmin/eng/pdf/zubehoer/ssd1803a_2_0.pdf

Printing and typographical errors reserved.
ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.

Page 7

EA DOGS104-A

DIMENSION

Printing and typographical errors reserved.
ELECTRONIC ASSEMBLY reserves the right
to change specifications without prior notice.

ATTENTION

handling precautions!

Note:

- LC-displays are not suited for wave soldering
or reflow soldering. Temperatures above
+80°C may damage LCD module.

- Surfaces of display and backlight are
equipped with protection foils to be protected
against scratching. Please remove before use.

EA FL-10P (Accessory)

PINOUT

Pin Symbol Level Function Pin Symbol Level Function

1 NC (A1: LED backlight) 20 RST L Reset

2 NC (C1: LED backlight) 19 SA0 H/L Slave Address

3 18 CS L Chip Select

4 17 SCLK H/L Serial Clock
5 16 SID H/L Serial Data In

6 15 SOD H/L Serial Data Out

7 14 VSS L GND

8 13 VDD H Power Supply +2.4..+3,6V

9 NC (C2: LED backlight) 12 IM1 H/L ModeH:SPI/L:I²C

10 NC (A2: LED backlight) 11 VOUT - Output Voltage C onverter

all dimensions are in mm

Note: The LED-Pins A1, C1, A2 und C2 (bzw. AGR, AERW, CG, CE, CR, CW) must be soldered from the top to ensure a clean contact.

ELECTRONIC ASSEMBLY GmbH
Zeppelinstraße 19
D-82205 Gilching
Germany

Fon: [phone]
Fax: [phone]
e-Mail: [e-mail]
Web: www.lcd-module.de