µC/GUI LCD7529 Driver
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LCD7529 Driver
Supported controllers
This driver has been tested with the following LCD controllers:
- Sitronix ST7529 controller
Bits per pixel
The supported color depth is 5 bpp.
Interfaces
The driver supports 8-bit parallel (simple bus) interface, 3 line SPI or 4 line SPI.
Display data RAM organization
The picture above shows the relation between the display memory and the SEG and COM lines of the display.
Additional RAM requirements of the driver
This driver requires a display data cache, containing a complete copy of the contents
of the display data RAM. The amount of memory used by the cache may be calculated
as follows:
Size of RAM (in bytes) = (LCD_XSIZE + 2) / 3 * 3 * LCD_YSIZE
Additional driver functions
None.
Hardware configuration
This driver accesses the hardware with a simple bus interface. The following table lists the macros which must be defined for hardware access:
| Macro |
Description |
| LCD_INIT_CONTROLLER |
Initialization sequence for the LCD controller. |
| LCD_WRITEM_A1 |
Writes multiple words to display controller with A-line high. |
| LCD_WRITE_A0 |
Writes a word to display controller with A-line low. |
| LCD_WRITE_A1 |
Writes a word to display controller with A-line high. |
Additional configuration switches
None.
Special requirements for certain LCD controllers
None.
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