TW8804-LC3-GR

Overview

The TW8804-LC3-GR is an LCD flat panel controller featuring an embedded NTSC/PAL/SECAM TV decoder. It supports TFT panels up to 1280x1024 resolution with one or two pixels per clock. The device includes a 24-bit digital RGB input and 8/16/24-bit YCbCr inputs. It operates at a 2.5V core voltage and 3.3V I/O, utilizing a 2-wire serial bus interface. The component is housed in a 160-pin PQFP package.

Feature Summary

• Integrated analog front-end with six ADCs for composite, S-video, and component video inputs
• Built-in image-scaling engine and de-interlacing engine for high-quality rendering
• On-chip OSD RAM supporting over 200 user-defined fonts
• Programmable timing controller (TCON) for active matrix TFT panels

Applications

• LCD TVs
• LCD monitors with TV functionality
• Car display entertainment systems
• Portable DVD players

Procurement Notes

Verify the specific suffix LC3-GR against official documentation to confirm pinout and packaging details. Note that this part is marked as not recommended for new designs; confirm availability of the recommended replacement TW8835 if applicable. Ensure compatibility with existing system interfaces before procurement.

Selection Notes

Select this controller for applications requiring integrated TV decoding and direct TFT panel driving. It is suitable for designs needing support for multiple video standards including NTSC, PAL, and SECAM. Consider the 160-pin PQFP package constraints and verify power supply requirements for the 2.5V core and 3.3V I/O domains.

Part Context

The TW8804 is a mixed-signal IC designed to convert standard TV, DTV, and PC monitor signals into digital data for TFT panels. Originally manufactured by Intersil, it integrates video processing, scaling, and timing control functions into a single package to reduce external component count.

Replacement Considerations

The datasheet explicitly recommends the TW8835 as a replacement part. However, it is noted that the TW8835 is not pin-compatible. Design modifications will be required to accommodate the different pin configuration of the substitute component.

FAQ

What is the maximum supported TFT panel resolution?

The TW8804 supports TFT panel resolutions up to SXGA (1280 x 1024).

Does the TW8804 support interlaced video?

Yes, the chip includes an internal de-interlacing engine that allows interlaced video to be supported.