The LCD2S-204YHY is a Serial LCD Character Display Module with a high speed
SPI/I2C serial bus. The LCD display is a 4x20 character STN yellow/green display with a yellow/green LED backlight, and is RoHS compliant. For convenience the I2C and SPI signals are available via a Micro Match type connector, and a
standard 2.54mm, 2x5 row pin header. Most new Modtronix SBC boards have Micro Match connectors, and
can be connected to the LCD2S-204YHY. The
Micro Match connector can be used to create a cable to connect the
LCD2S-204YHY and SBC boards together. Or, our
Micro Match cables can be use.
Current SBC boards that have compatible Micro Match connectors are the
SBC44B and the
A 2-way DIP switch is used to configure the unit for SPI or I2C operation (3 different addresses).
The SPI mode is very simple, and enables the user to control the display via a very simple
For more complex configurations, and multiple displays, the I2C bus can be used.
The contrast and backlight are software controlled, and can be set to 254 levels.
with up to 16 buttons (4 rows by 4 columns) can added to the LCD2S-204YHY.
keypads can be used, and can be connected to the LCD2S-204YHY via the
When using the I2C serial bus, an interrupt line will be activated when a key is
pressed, informing the user that there is key data to be read. Alternatively the LCD2S-204YHY can be polled to see if it has any pending keypad data.
The displays has 5 user configurable, general purpose inputs/outputs. Two of them can
deliver up to 1000mA each, and have protection circuitry for driving relays.
Download the datasheets below for further details on this product, and list of all commands.