Datasheet

26 LCD Controller
The Liquid Crystal Display (LCD) Controller provides support for a variety of LCD and OLED panels.
The TM4C129XNCZAD controller includes an LCD Controller with the following features:
■ Character-based panels
– Support for two character panels (CS0 and CS1) with independent and programmable bus
timing parameters when in asynchronous Hitachi, Motorola, and Intel modes
– Support for one character panel (CS0) with programmable bus timing parameters when in
synchronous Motorola and Intel modes
– Can be used as a generic 16-bit address/data interleaved MPU bus master with no external
stall
■ Passive matrix LCD panels
– Panel types including STN, DSTN, and C-DSTN
– AC Bias Control
■ Active matrix LCD panels
– Panel types including TN TFT
– 1, 2, 4, or 8 bits per pixel with palette RAM and 16 or 24 bits per pixel without palette RAM
■ OLED Panels
– Passive Matrix (PM OLED) with frame buffer and controller IC inside the panel
– Active Matrix (AM OLED)
■ Bus mastering capability from either system SRAM or EPI memory.
26.1 Block Diagram
The LCD controller consists of two independent controllers, the Raster Controller and the LCD
Interface Display Driver (LIDD) controller. Each controller operates independently from the other
and only one of them is active at any given time.
■ The Raster Controller handles the synchronous LCD interface. It provides timing and data for
constant graphics refresh to a passive display. It supports a wide variety of monochrome and
full-color display types and sizes by use of programmable timing controls, a built-in palette, and
a gray-scale/serializer. Graphics data is processed and stored in frame buffers. A frame buffer
is a contiguous memory block in the system. A built-in DMA engine supplies the graphics data
to the Raster engine which, in turn, outputs to the external LCD device.
■ The LIDD Controller supports the asynchronous LCD interface. It provides full-timing
programmability of control signals (chip selects, read/write strobes, enable, direction) and output
data.
1847December 13, 2013
Texas Instruments-Advance Information
Tiva
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TM4C129XNCZAD Microcontroller