Rev. 1.00
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ESK3�-A�A31 �.� Inch T�T LCD Mod�le
Use� Man�al
Using the Module
3
Using the Module
Tool Preparation
Users need to prepare the HT32 Series expansion board (ESK32-2x001) and the Starter Kit
(ESK32-30xxx)
LCD Module Setting
Before adjusting the communication interface using SW1, refer to the following descriptions and
figure 3 for the LCD module setting details.
If the MCU uses the EBI interface to drive the LCD module, the LCD module should be selected to
be in the EBI mode by switching SW1 of the LCD module to “0000” (default setting).
If the MCU uses the SPI interface to drive the LCD module, the LCD module should be selected to
be in the SPI mode by switching SW1 of the LCD module to “0010”.
Figure 3. LCD Module Communication Interface Setting
Expansion Board Setting
The expansion board settings, J1, J2 and J3 are associated with the LCD module, refer to table 3 for
more details. Refer to the “ESK32-2x001 Expansion Board User Manual” for details on using this
expansion board.
J1: This is used to select whether the LCD Backlight is controlled by the MCU I/O pins or not.
When the MCU I/O pins are insufficient, J1 can be switched to the BL_ON position, ensuring
that the LCD Backlight is always on.
J2: This is used for the EBI interface read operation and determines the MCU EBI OE pin is
connected to the nRD pin of the LCD module or not. When the LCD module needs to read back
the registers or display the RAM, J2 should be switched to OE.
J3: If the MCU supports the EBI interface, then J3 should be open, otherwise J3 should be shorted.
