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NHD-3.5-320240FT-CTXL-T Datasheet(PDF) 8 Page - Newhaven Display International, Inc.

Part # NHD-3.5-320240FT-CTXL-T
Description  3.5" EVE2 TFT Module
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Manufacturer  NEWHAVEN [Newhaven Display International, Inc.]
Direct Link  http://www.newhavendisplay.com
Logo NEWHAVEN - Newhaven Display International, Inc.

NHD-3.5-320240FT-CTXL-T Datasheet(HTML) 8 Page - Newhaven Display International, Inc.

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TFT Timing Characteristics
Shown below are the FT81x registers that control the TFT’s timing (clock and sync signals), along with the values
recommended to use for this EVE2 TFT Module:
Horizontal Timing
Vertical Timing
Clock Settings
Register
Value
Register
Value
Register
Value
REG_HSIZE
320
REG_VSIZE
240
REG_PCLK
6
REG_HCYCLE
408
REG_VCYCLE
263
REG_SWIZZLE
2
REG_HOFFSET
70
REG_VOFFSET
13
REG_PCLK_POL
1
REG_HSYNC0
0
REG_VSYNC0
0
REG_CSPREAD
0
REG_HSYNC1
10
REG_VSYNC1
2
REG_DITHER
0
Graphics Engine
The graphics engine executes the display list once for every horizontal line. It executes the primitive objects in the
display list and constructs the display line buffer. The horizontal pixel content in the line buffer is updated if the object is
visible at the horizontal line.
Main features of the graphics engine are:
 The primitive objects supported by the graphics processor are: lines, points, rectangles, bitmaps (comprehensive
set of formats), text display, plotting bar graph, edge strips, and line strips, etc.
 Operations such as stencil test, alpha blending and masking are useful for creating a rich set of effects such as
shadows, transitions, reveals, fades and wipes.
 Anti-aliasing of the primitive objects (except bitmaps) gives a smoothing effect to the viewer.
 Bitmap transformations enable operations such as translate, scale and rotate.
 Display pixels are plotted with 1/16th pixel precision.
 Four levels of graphics states
 Tag buffer detection
The graphics engine also supports customized built-in widgets and functionalities such as jpeg decode, screen saver,
calibration etc. The graphics engine interprets commands from the MPU host via a 4 Kbyte FIFO in the FT81x memory at
RAM_CMD. The MPU/MCU writes commands into the FIFO, and the graphics engine reads and executes the commands.
The MPU/MCU updates the register REG_CMD_WRITE to indicate that there are new commands in the FIFO, and the
graphics engine updates REG_CMD_READ after commands have been executed.
Main features supported are:
 Drawing of widgets such as buttons, clock, keys, gauges, text displays, progress bars, sliders, toggle switches,
dials, gradients, etc.
 JPEG and motion-JPEG decode
 Inflate functionality (zlib inflate is supported)
 Timed interrupt (generate an interrupt to the host processor after a specified number of milliseconds)
 In-built animated functionalities such as displaying logo, calibration, spinner, screen saver and sketch
 Snapshot feature to capture the current graphics display
For a complete list of graphics engine display commands and widgets, please refer to Chapter 4 of the official
FT81x Series Programmers Guide:
http://www.ftdichip.com/Support/Documents/ProgramGuides/FT81X_Series_Programmer_Guide.pdf


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