hd44780 lcd display datasheet pricelist

ERM1202SYG-1 is 12 characters wide,2 rows character lcd module,SPLC780C controller (Industry-standard HD44780 compatible controller),6800 4/8-bit parallel interface,single led backlight with yellow green color included can be dimmed easily with a resistor or PWM,stn-lcd positive,dark blue text on the yellow green color,wide operating temperature range,rohs compliant,built in character set supports English/Japanese text, see the SPLC780C datasheet for the full character set.Optional 3.3v or 5v power supply and optional pin header connection.

Of course, we wouldn"t just leave you with a datasheet and a "good luck!".For 8051 microcontroller user,we prepared the detailed tutorial such as interfacing, demo code and Development Kit at the bottom of this page.

ERM802SA-2 is 8 characters wide,2 rows character lcd module,SPLC780C controller (Industry-standard HD44780 compatible controller),6800 4/8-bit parallel interface,single array led backlight with yellow green color included can be dimmed easily with a resistor or PWM,stn-lcd positive,dark blue text on the yellow green color,wide operating temperature range,rohs compliant,built in character set supports English/Japanese text, see the SPLC780C datasheet for the full character set,compact size.Optional 3.3v or 5v power supply and optional pin header connection.

Of course, we wouldn"t just leave you with a datasheet and a "good luck!".For 8051 microcontroller user,we prepared the detailed tutorial such as interfacing, demo code and Development Kit at the bottom of this page.

Answer: For the segment type LCD module, if you need to modify the outline size or display content, we will start the drawing paper for your checking.

Answer: Yes, we can. Please send us your drawing paper. If you don’t have, please tell us the information of the display and your demand. We will evaluate the cost and give you the price soon.

Answer: If we have stock for the standard displays, the leading time is one day after payment. If it is mass production for special ones, the leading time is about 15~30 days. If we finish earlier, we will send email to you in advance.

The EA 9707-V24S interface allows dot-matrix LCDs to be programmed easily and quickly. The interface can be soldered directly onto almost all dot-matrix modules. It is connected to a standard RS-232C interface.

The data transmission rate can be set to 300, 1200, 2400 or 9600 bps. Umlauts (ä, ö, ü, ß, Ä, Ö, Ü) are interpreted as extended IBM code and recoded. If the display is full, it scrolls upward automatically. CR ($0D,13d) and LF ($0A,10d) are identified and executed. This automatic function can be switched off for individual cursor positioning. The supply voltage is +5V/typ. 1mA. The interface can also be supplied with an RS-422 interface (EA 9707 OPT-RS-422).

The Hitachi HD44780 LCD controller is an alphanumeric dot matrix liquid crystal display (LCD) controller developed by Hitachi in the 1980s. The character set of the controller includes ASCII characters, Japanese Kana characters, and some symbols in two 40 character lines. Using an extension driver, the device can display up to 80 characters.

The Hitachi HD44780 LCD controller is limited to monochrome text displays and is often used in copiers, fax machines, laser printers, industrial test equipment, and networking equipment, such as routers and storage devices.

Compatible LCD screens are manufactured in several standard configurations. Common sizes are one row of eight characters (8×1), and 16×2, 20×2 and 20×4 formats. Larger custom sizes are made with 32, 40 and 80 characters and with 1, 2, 4 or 8 lines. The most commonly manufactured larger configuration is 40×4 characters, which requires two individually addressable HD44780 controllers with expansion chips as a single HD44780 chip can only address up to 80 characters.

Character LCDs may have a backlight, which may be LED, fluorescent, or electroluminescent. The nominal operating voltage for LED backlights is 5V at full brightness, with dimming at lower voltages dependent on the details such as LED color. Non-LED backlights often require higher voltages.

Character LCDs use a 16-contact interface, commonly using pins or card edge connections on 0.1 inch (2.54 mm) centers. Those without backlights may have only 14 pins, omitting the two pins powering the light. This interface was designed to be easily hooked up to the Intel MCS-51 XRAM interface, using only two address pins, which allowed displaying text on LCD using simple MOVX commands, offering cost effective option for adding text display to devices.

Vee (also V0): This is an analog input, typically connected to a potentiometer. The user must be able to control this voltage independent of all other adjustments, in order to optimise visibility of the display that varies i. a. with temperature and, in some cases, height above the sea level. With a wrong adjustment, the display will seem to malfunction.

R/W: In most applications, reading from the HD44780 is not necessary. In that case, this pin can be permanently connected to ground and no processor pins need to be allocated to control it.

Selecting 4-bit or 8-bit mode requires careful selection of commands. There are two primary considerations. First, with D3–D0 unconnected, these lines will always appear high (binary 1111) to the HD44780 since there are internal pull-up MOSFETs.

The execution times listed in this table are based on an oscillator frequency of 270 kHz. The data sheet indicates that for a resistor of 91 kΩ at VCC=5 V the oscillator can vary between 190 kHz and 350 kHz resulting in wait times of 52.6 µs and 28.6 µs instead of 37 µs. If a display with the recommended 91 kΩ resistor is powered from 3.3 volts the oscillator will run much slower. If the busy bit is not used and instructions are timed by the external circuitry, this should be taken into account.

The original HD44780 character generator ROM contains 208 characters in a 5×8 dot matrix, and 32 characters in a 5×10 dot matrix. More recent compatible chips are available with higher resolution, matched to displays with more pixels.

Description:This is a 20 character x 4 line blue HD44780 Super Twisted Nematic (STN) LCD with built-in HD44780 equivalent controller (also known as alphanumeric displays). Interfacing is simplified with 4 bit or 8 bit communications and programming code is widely available for many different controllers and systems. Perfect companion for your project, whether you are using an Arduino, ATMEL AVR or PIC microcontroller. Includes LED backlight.

Converter I2C fordisplay with the HD44780 controller so that the screen requires only two lines - SDA and SCL. Via the bus, from the level of theArduino, can be controlled the displayed text and the backlight, including turning them off or on at any time. On board is alsoa potentiometerto adjust the contrast.

The system has four leads and a jumper which putting out causes turning off the backlight of the screen. On the board is also goldpin strip which is fixed to the populardisplays based on HD44780 driver. All leads are soldered.

What’s better than a 16×2 display? One that shouts at you in color! Instead of just having blue and white (or red and black), this LCD has full color RGB characters on a dark background! You can change the character display colors to red, green, blue, pink, white, purple yellow, teal, salmon, or chartreuse. This LCD looks strikingly good in person.

Adafruit had these custom made to their specification so that you can use them in existing LCD projects and they’ll still work – just that only the red LED will be used (so it will appear red-on-black). The extra two pins (17 and 18) are for the green and blue LEDs. The LCD has resistors on board already so that you can drive it with 5V logic and the current draw will be ~20mA per LED. There’s a single LED backlight for the entire display, the image above showing 3 colors at once is a composite!

Now that we have access to the I²C GPIO expander, we yet have to find out which GPIO on the expander is wired to which pin of the screen. We will have to provide this information into the device tree, as it is explained in the hit,hd44780.txt file in the kernel documentation.

So, we need to add this auxdisplay node in our device tree, and configure it with the pins of the PCF8574A (remember, we declared it as a gpio-controller just before).

After a try when the screen was displaying some stuff but the backlight was always off (so almost illegible on the white/blue screen variant), I had to change the backlight-gpios node to use GPIO_ACTIVE_LOW in order for the backlight to illuminate the screen at boot.