TW8827

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Ultra low cost, highly integrated LCD controller for analog LCD panels

Device is no longer available or supported, and production has been discontinued.

Product Status: EOL

OVERVIEW

The TW8827 is an ultra low cost, highly integrated LCD TFT flat panel controller supporting analog panels. To reduce BOM cost, TW8827 integrates a NTSC/PAL/SECAM video decoder supporting CBVS & S-Video inputs, an 8-bit MCU, a CCFL controller and a LED controller. The TW8827 integrates a high quality NTSC/PAL/SECAM 2D video decoder and a 2D De-interlacer/Scaler. In addition, 16-bit digital RGB/YCbCr inputs are supported through built-in digital interface.

KEY FEATURES

  • Supports analog inputs including CVBS & S-Video signals and digital inputs including 18-bits RGB/YCbCr. Both interlaced and progressive ITU-656 and
    ITU-601 formats are supported
  • Supports analog panel up to WQVGA resolutions
  • Integrated 8-bit 8051 MCU, LED controller and CCFL controller Built-in 8 color font based OSD with ~200 ROM & 75 RAM 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

  • 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

  • 16bits Digital RGB/YCbCr Inputs
  • Supports 18-bits RGB/YCbCr digital input
  • Supports both interlaced and progressive ITU 656 source

  • TFT Panel Support
  • Supports a wide variety of Analog active matrix TFT panels
  • Supports analog panel up to WQVGA (480 x 234)

  • Font OSD
  • Built-in OSD controller with integrated character ROM and programmable RAM font- 202 ROM & 75 RAM fonts
  • Multi-window OSD support with color pallet
  • Support OSD overlay with alpha blending

  • 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

  • LED Controller
  • Boost-up DC and PWM Dimming Control
  • Built-in Open LED Protection
  • 1MHz fixed Switching Frequency
  • Resistor-programmable LED Current

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
TW8827
Basic Information
Production Status
EOL
CVBS Input
Yes
S-Video Input
Yes
YPbPr Input
No
SCART Input
No
Analog RGB Input
No
Digital RGB/Y CbCr Input
16 bit
LVDS Input
No
MIPI-CSI2 input
No
Comb Filter
2D
Max Output Resolution
WQVGA
Qualification Level
Automotive
De-Interlacer
2D
Color Enhancement
Yes
PIP
No
OSD Type
Font
OSD Font ROM
202
OSD Font RAM
75
External OSD
No
OSD Colors
8x2 Color/8-Bit Palette
TCON Output
Analog
Dual View Output
No
LVDS Output
No
TTL Output
No
Secondary Output
Pseudo BT.656 (decoder only)
Memory Support
No
MCU
Integrated
CCFL/LED Controller
CCFL & LED
Touch-screen Controller
No
Temperature Range
-40 to +85
Recommended for new designs
Yes

Related Videos

3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.
3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.
3:42
The TW8844 is the industry's first full HD LCD video processor; it features fast boot reliability, frozen detection, and automatic contrast adjustment.
7:16
Learn how to assemble the hardware, change video source and demonstrate the MIPI loop back feature on the TW8844 evaluation boards.
1:22
This video talks about the TW88xx display processors, which enable boot up and display of video within 500 milliseconds.

Featured Design Resources


Key Differences in TW884x Family

Product Input Types ADC
Input
Freq.
(MHz)
Max
Output
Resolution
Panel
Output
SoC
Output
Pkg
Type
Technical
Highlights
CVBS Comb
Filter
S-Video Analog
RGB/YPbPr
Digital
RGB/YCbCr
LVDS
Open LDI
TW8844 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
MIPI-CSI2
v1.1
156 Ld LQFP 1080p panel support + MIPI-CSI2 output path, improved frozen detection
TW8845 Yes* 4H No No Yes
2x24-bit ports
Yes
2CH
27 1080p
1920x1080
TTL/TCON
2CH LVDS
Pseudo
BT.656
156 Ld LQFP 1080p panel support + BT656 output path, improved frozen detection
TW8836 Yes* 4H Yes Yes (1080p) Yes
24-bit
Yes
1CH
148 WXGA/720p
1366x768
TTL/TCON
1CH LVDS
Pseudo
BT.656
128 Ld LQFP 720p panel support with LVDS I/O

*Differential Supported