# Square RGB 666 TTL TFT Display - 4" 720x720 - No Touchscreen - TL040HDS20-B1502A

**Type:** Product page · **SKU:** ADA5795 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/square-rgb-666-ttl-tft-display-4-720x720-no-touchscreen-tl040hds20-b1502a.html ([markdown](https://core-electronics.com.au/square-rgb-666-ttl-tft-display-4-720x720-no-touchscreen-tl040hds20-b1502a.html.md))

This is a screen for advanced hackers who like the look of a big rectangular TFT screen with tons of pixels. The 4" display has 720x720 16-bit...

## Pricing

- **Price:** $52.55 (inc GST) — $47.77 AUD, exc GST
- **Quantity discounts:** 10+ $46.34 (exc GST) · 50+ $45.38 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## Description

This is a screen for advanced hackers who like the look of a big rectangular TFT screen with tons of pixels. The 4" display has 720x720 16-bit full-color pixels and is an **IPS** display, so the color looks great up to 80 degrees off-axis in any direction.

**This version does not have a touchscreen.**

The TFT driver is ST7701S and uses both TTL RGB 'dot clock' data. Note that unlike the other funky-shaped displays, this particular model *does not require SPI pre-configuration*. It pops up immediately into 'RGB' mode - which makes it a great panel to start with. However, note that despite having a 40-pin connector, it does not have the same pinout as standard 'rectangular' 800x480 (4.3", 5" or 7") or 480x272 (4.3") displays. It's a new kind of beast for sure.

To make stuff light up you'll need a chip that can perform TTL RGB TFT driving, which means a powerful microcontroller such as the ESP32-S3 with octal PSRAM or a computer like a Raspberry Pi (with either direct-DPI connection or an intermediary chip like the ICN6211). Either way, it's not something you can wire up to your Feather or Arduino!

**This is just the display module, no driver PCB is included!**

**You cannot use these with an everyday microcontroller unless it specifically has support for RGB-666 displays so please do not purchase unless you know for sure that it can plug into a driver board with the correct pinout as well. [Check out the Adafruit Qualia ESP32-S3 for TTL RGB-666 Display!](https://core-electronics.com.au/adafruit-qualia-esp32-s3-for-ttl-rgb-666-displays.html)**

## Technical Details 

- [Display Init Code Listing](https://cdn-shop.adafruit.com/product-files/5795/5795_B1502_PORCH_RGB_0710.txt)
- [Display Spec Sheet](https://core-electronics.com.au/attachments/localcontent/Specification_TL040HDS20-B1502A_20221208_120974c2ec2.pdf)
- [ST7701 Datasheet](https://core-electronics.com.au/attachments/localcontent/ST7701Datasheet_541567e0974.pdf)

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## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/A/D/ADA5795-1.jpg)