EA DOGM204-A Issue 7.2021 INCL. CONTROLLER SSD1803A FOR 4-/8-BIT, SPI AND IC FEATURES * HIGH-CONTRAST LCD SUPERTWIST DISPLAY * OPTIONAL LED BACKLIGHT UNITS IN DIFFERENT COLORS * 4x20 CHARACTER WITH 4.8 mm HEIGHT * SSD1803A CONTROLLER FOR 4-/8-BIT, SPI (2-/3-/4-WIRE) AND IC (2-WIRE) INTERFACE * SINGLE POWER SUPPLY +3.3V (typically 250A) * NO ADDITIONAL VOLTAGES REQUIRED * OPERATING TEMPERATURE RANGE -20 THROUGH +70C * LED BACKLIGHT 3 through 80mA 3.3V or 2 through 40mA 5V * 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 4x20 - 4.8 mm EA DOGM204x-A x:B = blue background W = white background transfelctive S = black background N = white background reflective LED BACKLIGHT, WHITE EA LED66X40-W LED BACKLIGHT, AMBER EA LED66X40-A LED BACKLIGHT, GREEN/RED EA LED66X40-GR USB TEST BOARD FOR PC (WINDOWS) EA 9780-4USB SOCKET CONNECTOR 4.8 mm HIGH (1x22-PIN, 2.54mm PITCH) EA FL-22P available for 1 pc. off even with LED: 5.8mm flatEA DOGM204-A EA DOG SERIES With its EA DOG series, ELECTRONIC ASSEMBLY presents the worlds 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 66 x 40 mm at the standard font size of 4.8 mm (4 x 10) * ultra-flat at 2.0 mm without backlight or 5.8 mm including LED backlight * 4-bit, 8-bit, SPI interface (2-/3-/4-wire) and IC (2-wire) * typical power consumption of only 250A 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 5 different variants are available for individual backlighting: white, yellow/green, red, amber and bi- color. Limiting resistor For monochrome backlights, 2 separate LED amber Forward Current EA LED66x40-A voltage max. paths are available, which can be switched in 3,3 V 5 V parallel or in series to ideally match the system Connected in parallel 2,1 V 72 mA 18 ohm 47 ohm voltage. This means that all the backlights can Connected in series 6,3 V 24 mA - - be run either at 3.3 V and higher voltages. Operation of the backlight requires an external Limiting resistor white Forward Current series resistor for current limiting. This can be EA LED66x40-W voltage max. 3,3 V 5 V calculated by R=U/I you will find the values in the table. To improve life time it is recommanded Connected in parallel 3,2 V 90 mA 1,2 ohm 24 ohm to use a current source only. Connected in series 9,6 V 30 mA - - 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. Limiting resistor green/red Forward Current Important: Never operate the backlight directly EA LED66x40-GR voltage max. 3,3 V 5 V on a 5 V/3.3V supply, as this can immediately red path (ARG/CR) 2,1 V 80 mA 24 ohm 48 ohm destroy the LEDs green path (ARG/CG) 2,1 V 80 mA 18 ohm 39 ohm 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 Printing and typographical errors reserved. ELECTRONIC ASSEMBLY reserves the right to change specifications without prior notice.