TFP401 HDMI/DVI Decoder - 40-Pin TTL Breakout - Touchscreen

This card is an all-in-one display driver for TTL screens or maybe you can decode HDMI/DVI video for another project. This breakout has a TFP401 for video decoding and an AR1100 USB resistive touchscreen driver for the touch version.

The TFP401 is a powerful DVI/HDMI decoder from TI. It can pull unencrypted video and transmit raw 24-bit color pixel data - HDCP is not supported. Essentially, it will decode any resolution from 25-165MHz pixel clock up to 1080p. We used this gap with 800x480 screens, so we didn't test it with higher resolutions. We added a bunch of support circuits like a backlight driver and configured it to run basic TTL display panels like the ones in the store.

You can even run the screen and decoder from a USB port. For example, with a 5" 800x480 screen and 50mA backlight current, the current draw is a total of 500mA. You can reduce this to 370mA by running the backlight at half brightness (25mA). When the backlight is off, the decoder and the screen itself draw 250mA. If you need more backlight control, there's a PWM input, connect it to your microcontroller or another PWM output and you can dim the backlight continuously as you like.

We have two versions, one for video only and the other for video+touch. This is the touch version. Pair it with a screen with a resistive touch overlay. The USB port then serves both as power and data for the touch screen, appearing as a USB mouse. We have successfully tested it on Mac, Windows, and Debian Linux (Raspbian on a Raspberry Pi). Other Linux distributions may or may not work, but if you're using Linux, you're probably used to it.

This driver is designed to be a small and easy-to-use display driver, especially for 40-pin TTL screens. We recommend using it especially on single-board computers with DVI/HDMI output like Raspberry Pi or BeagleBone Black (or desktop/laptop computers!). You can run the driver over USB and then feed the video over the HDMI port. It fits in a small board to fit in a case. You can run our 4.3", 5.0", or 7.0" screens, but we only recommend 5" or 7" 800x480 since some computers don't like the low resolution of 4.3" and TFP401 doesn't contain a video scaler. Resizing/cropping video.

We ship this board with 800x480 resolution EDID so it will be automatically detected at this resolution. For advanced users, EDID can be reprogrammed using our sample Arduino code. Or for computers using Linux, you can always force the resolution to the screen you've connected.

This is just a video decoder, the screen is not included. We recommend using 800x480 5" or 7" touch as touch. Please check out the detailed tutorial on adjusting the backlight brightness. We also have information on fine-tuning the EDID if you want to use other screen resolutions.