µC/GUI LCD501 Driver
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LCD501 Driver
Supported controllers
This driver has been tested with the following LCD controllers:
It should be assumed that it will also work with any controller
of similar organization.
Bits per pixel
The supported color depth is 8 bpp.
Interfaces
The driver supports 8-bit parallel (simple bus) interfaces.
Display data RAM organization
The picture above shows the relation between the display memory and the SEG and COM lines of the LCD.
Additional RAM requirements of the driver
This LCD driver can only be used with a display data cache, containing a complete copy of the contents of the LCD data RAM. The amount of memory used by the cache is: 96 x 64 = 6144 bytes. The driver can not be used without data cache.
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_WRITE_A0 |
Write a byte to display controller with A-line low. |
| LCD_WRITE_A1 |
Write a byte to display controller with A-line high. |
Additional configuration switches
None.
Special requirements for certain LCD controllers
The driver needs to work in the fixed palette mode 233. The driver does not work with other palettes. Further the driver needs to swap the the red and the blue part of the color index. You should use the following macro definitions in the file LCDConf.h:
#define LCD_FIXEDPALETTE 233
#define LCD_FIXEDPALETTE 233 #define LCD_SWAP_RB
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