emWin driver GUIDRV_1611

Supported hardware

Controllers

This driver works with the following display controllers:

• Epson S1D15E05, S1D15E06, S1D15719
• UltraChip UC1610, UC1611

Bits per pixel

Supported color depth is 2bpp (UC1610, S1D15E05, S1D15E06, S1D15719) and 4bpp (UC1611).

Interfaces

The driver supports the indirect interface (8 bit) of the display controller. Parallel, 4-pin SPI or I2C bus can be used.

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 display driver can be used with or without a display data cache. The data cache contains a complete copy
of the LCD data RAM. If a cache is not used, there are no additional RAM requirements.
It is highly recommended to use this driver with a data cache for faster LCD-access. Not using a cache degrades
the performance of this driver seriously. The amount of memory used by the cache may be calculated as follows:

Size of RAM (in bytes) = (LCD_YSIZE + (8 / LCD_BITSPERPIXEL - 1)) / 8 * LCD_BITSPERPIXEL * LCD_XSIZE

Additional driver functions

None.

Hardware configuration

This driver accesses the hardware with the indirect interface. The following table lists the macros which need to
be defined for hardware access:

Macro	Explanation
LCD_READ_A0	Read a byte from LCD controller with A-line low.
LCD_READ_A1	Read a byte from LCD controller with A-line high.
LCD_WRITE_A0	Write a byte to LCD controller with A-line low.
LCD_WRITE_A1	Write a byte to LCD controller with A-line high.
LCD_WRITEM_A1	Write multiple bytes to LCD controller with A-line high.

Additional configuration switches

The following table shows optional configuration switches available for this driver:

Macro	Explanation
LCD_CACHE	When set to 0, no display data cache is used, which slows down the speed of the driver. Default is 1 (cache activated).

Special requirements for certain LCD controllers

None.