Guide Contents
Guide Contents
Overview
Pinouts
EDID EEPROM Port
Backlight Control
Power Output
Raspberry Pi Config
Touchscreen
FAQ
2
3
7
8
8
8
9
11
12
When plugged into a Raspberry Pi I don't get any sort of display, the backlight is on but the screen just has white
lines
12
My display kinda works but the right hand of the screen has all this noisy graphics!
12
I'm getting vertical line(s) when the display is connected to a Raspberry Pi.
12
Downloads
Files
Schematics
13
13
13
© Adafruit Industries
https://learn.adafruit.com/adafruit-5-800x480-tft-hdmi-monitor-touchscreen-backpack
Page 2 of 14
Overview
Its a mini HDMI monitor! So small and simple, you can use this display with any computer that has HDMI output, and the
shape makes it easy to attach to a case or rail. This backpack features the TFP401 for decoding video, and for the
touch version, an AR1100 USB resistive touch screen driver.
© Adafruit Industries
https://learn.adafruit.com/adafruit-5-800x480-tft-hdmi-monitor-touchscreen-backpack
Page 3 of 14
The TFP401 is a beefy DVI/HDMI decoder from TI. It can take unencrypted video and pipe out the raw 24-bit color pixel
data - HDCP not supported! The 5" and 7" displays are 800x480 resolution, which is just enough to run most software,
but still small enough that it can be used in portable or embedded projects without the bulk.
© Adafruit Industries
https://learn.adafruit.com/adafruit-5-800x480-tft-hdmi-monitor-touchscreen-backpack
Page 4 of 14
You can even power the entire display from a USB port.
With the default 5" 800x480 display and 50mA backlight current, the current draw is 500mA total. You can reduce that
down 370mA by running the backlight at half-brightness (25mA).
With the default 7" 800x480 display and 150mA backlight current, the current draw is 600mA total. You can reduce
that down 400mA by running the backlight at half-brightness (75mA).
With the backlight off, the decoder and display itself draws 250mA. If you want more backlight control, there's a PWM
input, connect that to your microcontroller or other PWM output and you can continuously dim the backlight as desired.
We have two versions, one is video only and one is video+touch. If you want a screen that you can poke at, get the
+touch version. The USB port then acts as both power and data, with the touch screen appearing like a USB mouse.
In particular, we suggest it for use with single board computers (or desktop/laptops!) with DVI/HDMI output like the
Raspberry Pi or BeagleBone Black. You can power the driver over USB and then feed it video via the HDMI port. It's a
very small board so great for tucking into an enclosure. Please note the TFP401 decoder chip does not contain a video
scaler, it will not resize/shrink video!
© Adafruit Industries
https://learn.adafruit.com/adafruit-5-800x480-tft-hdmi-monitor-touchscreen-backpack
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