DATA SHORT
To request the full datasheet, please visit
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TW8831
TFT Display Controller
The TW8831 incorporates many of the features
required to create multi-purpose in-car LCD display
system in a single package. It integrates a high quality
2D comb NTSC/PAL/SECAM video decoder, triple high
speed RGB ADCs, high quality scaler, and images
enhancement functions which include Black and
White Stretch and etc. It also supports panoramic
scaling for conversion to wide screen display. On the
input side, it supports a rich combination of CVBS, S-
video. On the output side, it supports variety of digital
panel types with its built-in timing controller.
FN7825
Rev. 1.00
April 25, 2013
256 programmable font RAM and 384 display
RAM.
Four windows font OSD with bordering / shadow
High quality scaler with both up/down and
nonlinear scaling support
Built-in 2D de-interlacing function
Programmable hue, brightness, saturation,
contrast and sharpness
Supports programmable cropping of input video
and graphics
Independent RGB gain and offset controls
Panorama / Water-glass scaling
Programmable 10-bit Gamma correction for
each color
Operated in Frame Sync mode
Black/White Stretch
Spread spectrum clock
Modulation frequency and spread width are
selectable
Supports functional based independent power
down
1.8 / 3.3 V operation
Supports 2-wire serial bus interface
Built-in single LED back light controller
Built-in VCOM DC voltage
Built-in VCOM analog amplitude
Built-in DC-DC convertor
Single 27MHz crystal
80-pin LQFP package
Image Processing
Features
Analog Video Decoder
NTSC (M, 4.34) and PAL (B, D, G, H, I, M, N, N
combination), PAL (60), SECAM with automatic
format detection
Three 10-bit ADCs and analog clamping circuit
Fully programmable static gain or automatic
gain control for the Y or CVBS channel
Programmable white peak control for the Y or
CVBS channel
Software selectable analog inputs
High quality adaptive 2D comb filter for both
NTSC and PAL inputs
PAL delay line for color phase error correction
Image enhancement with 2D dynamic peaking
and CTI
Digital sub-carrier PLL for accurate color
decoding
Digital horizontal PLL and Advanced
synchronization processing for VCR playback
and weak signal performance
Programmable hue, brightness, saturation,
contrast and sharpness
High quality horizontal and vertical filtered down
scaling with arbitrary scale down ratio
Built-in programmable timing controller
Supports 3, 4, 6 or 8 bits per pixel up to 16.8
million colors with built-in dithering engine
Support digital panel up to WVGA/SVGA
resolution
Support Serial (8bit) RGB panel
Clock Generation
Power Management
Miscellaneous
TFT Panel Support
Applications
In-car display controller
Portable DVD and DVRs players
Portable media player
On Screen Display
FN7825 Rev. 1.00
April 25, 2013
Page 1 of 2
TW8831
FLAT PANEL OUT
YIN0~2
FONT
OSD
2D-COMB
VIDEO
DECODER
Triple
ADCs
INPUT
CONTROLLER
SCALER
IMAGE
ENHANCE
OUTPUT
FORMATTER
TCON
TCON SIGNALS
SERIAL DATA
CIN
VIN
LED/
VCOM
CONTROL
2-WIRE
SERIAL
BUS
I2C_SDAT
I2C_SCLK
FUNCTIONAL BLOCK DIAGRAM
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Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided
that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify
that datasheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is
assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see
http://www.intersil.com
FN7825 Rev. 1.00
April 25, 2013
Page 2 of 2
Microchip MCU
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