Techwell www.intersil.com
Techwell
Automotive Display ICsAutomotive Display ICs
TW8817TW8817
Low cost, highly integrated LCD
controller for digital LCD panels
Low cost, highly integrated LCD
controller for digital LCD panels
TECHWELL
DISPLAY
The TW8817 is a highly integrated low cost TFT flat panel controller supporting digital panels. To reduce BOM cost, TW8817 integrates a
SECAM/NTSC/PAL video decoder supporting CVBS & S-Video inputs, an 8-bit MCU, a CCFL controller and a LED controller. The TW8817 integrates a
high quality NTSC/PAL/SECAM 2D video decoder and a 2D De-interlacer/Scaler.
Key FeaturesKey Features
Supports analog inputs including CVBS & S-Video signals
Supports digital panel up to SVGA resolution
Integrated 8-bit 8051 MCU, CCFL and LED controller
Built-in 8 color font based OSD with ~200 ROM & 75 RAM fonts. Supports Multi-color fonts by
combining 3 single color fonts
Embedded Image Enhancement
Programmable CTI, hue, brightness, saturation, contrast & sharpness control
Black/White Stretch
Programmable favorite color enhancement- up to three colors (Skin, Grass & Sky)
Programmable Gamma Correction table
TW8817 Functional Block DiagramTW8817 Functional Block Diagram
Video Decoder
2D De-interlacer
Scaler
4H Comb Filter
CVBS/
S-Video
CCFL Controller
Font OSD
Image
Enhancement
Gamma
Control
(8-bit LUT)
SPI Interface
FPR[7:0]
FPG[7:0]
FPB[7:0]
}
Panel Timing
TCON
Order InformationOrder Information
Part # Name Description Pin Count Body Size
TW8817 TQFP 80 Thin Quad Flat Package 80 12 x 12 mm^2
LED Controller
Digital
Panel
Digital
Panel
8051 MCU
(8-bit)
Target ApplicationsTarget Applications
Navigation + DVD + TV
Back up Camera
Rear Seat Entertainment
Car TV
Portable DVD
PMP
Portable TV
Door Phone
Photo Frame
DMB TV
Baby Monitor
Home Audio
In Flight Entertainment
TFT Panel Support
Supports a wide variety of Digital single pixel active matrix
TFT panels
Supports digital TTL panel up to SVGA
Supports 3, 4, and 6 bits per pixel format
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www.intersil.com
Techwell
Automotive Display ICsAutomotive Display ICs
TW8817
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
Advanced synchronization processing for VCR trick play
signal
Two 10-bit ADCs and analog clamping circuit
Built-in analog anti-aliasing filter
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 allows any of the
following combinations:
2 composite video
1 S-Video
4-H adaptive comb filter Y/C separation
PAL delay line for color phase error correction
Digital PLL for both color and horizontal locking
Programmable hue, brightness, saturation, contrast,
sharpness, Gamma control, and noise suppression
Automatic color control and color killer
Detection of level of copy protection according to
Macrovision standard
Built-in Microcontroller
Support external SPI Interface
Support I2C Master interface with GPIO
Support 2 LED signal interface with GPIO
Support UART interface with GPIO
Support IR or interrupt with GPIO
CCFL Controller
Single channel CCFL controller based on push-pull
architecture
Lamp fault monitoring- Lamp Open, Lamp Over-current,
Failure to Strike and Over-voltage
Programmable Lamp Frequency to move EMI spurs out
of band
Analog or digital brightness control. 300:1 vdimming
range with the digital brightness control
Low power stand-by mode
Font OSD
Built-in Font OSD with 202 ROM and programmable 227
RAM fonts. Supports Multi-color fonts by combining 3
single color fonts
Multi-window OSD support with color pallet
Support OSD overlay with alpha blending
Image Processing & Enhancement
Built-in 2D de-interlacing engine
Built-in high quality scalar
Programmable hue, brightness, saturation, contrast
Sharpness control with vertical peaking
Programmable color transient improvement control
Panorama / Water-glass scaling
Programmable Gamma correction tables
Black/White Stretch
Programmable favorite color enhancement
Timing Controller (TCON)
Support programmable interface signals for control
Column (source) driver / row (gate) driver
Miscellaneous
Supports 2-wire serial bus interface
Temperature rating: -40 C to +85 C
Spread spectrum PLL
Low-speed ADC for KEY scan
Programmable panel VCOM offset control
5V tolerant I/O
Power-down mode
Single 27MHz crystal
LED Controller
Boost-up
DC and PWM Dimming Control
Built-in Open LED Protection
1MHz fixed Switching Frequency
Resistor-programmable LED Current
Power Management
Supports Panel power sequencing.
Supports DPMS for monitor power management
1.8 / 3.3 V operation
Low cost, highly integrated LCD
controller for digital LCD panels
Low cost, highly integrated LCD
controller for digital LCD panels
