RA8875

SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries # SPDX-License-Identifier: MIT # Quick test of RA8875 with Feather M4 import time import board import busio import digitalio from adafruit_ra8875 import ra8875 from adafruit_ra8875.ra8875 import color565 BLACK = color565(0, 0, 0) RED = color565(255, 0, 0) BLUE = color565(0, 255, 0) GREEN = color565(0, 0, 255) YELLOW = color565(255, 255, 0) CYAN = color565(0, 255, 255) MAGENTA = color565(255, 0, 255) WHITE = color565(255, 255, 255) # Configuration for CS and RST pins: cs_pin = digitalio.DigitalInOut(board.D9) rst_pin = digitalio.DigitalInOut(board.D10) int_pin = digitalio.DigitalInOut(board.D11) # Config for display baudrate (default max is 6mhz): BAUDRATE = 6000000 # Setup SPI bus using hardware SPI:

TFT Display Driver Board

The RA8875 is a tft display driver board from Adafruit. SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries # SPDX-License-Identifier: MIT # Quick test of RA8875 with Feather M4 import time import board import busio import digitalio from adafruit_ra8875 import ra8875 from adafruit_ra8875.ra8875 import color565 BLACK = color565(0, 0, 0) RED = color565(255, 0, 0) BLUE = color565(0, 255, 0) GREEN = color565(0, 0, 255) YELLOW = color565(255, 255, 0) CYAN = color565(0, 255, 255) MAGENTA = color565(255, 0, 255) WHITE = color565(255, 255, 255) # Configuration for CS and RST pins: cs_pin = digitalio.DigitalInOut(board.D9) rst_pin = digitalio.DigitalInOut(board.D10) int_pin = digitalio.DigitalInOut(board.D11) # Config for display baudrate (default max is 6mhz): BAUDRATE = 6000000 # Setup SPI bus using hardware SPI:. View the full RA8875 datasheet below including key specifications.

Official RA8875 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Adafruit

RA8875 Key Specifications

Parameter	Value
Logic Level	3V to 5V compliant (level shifted)
Internal RAM	768KB
Level Shifter	CD74HC4050
Touch Support	4-wire resistive touchscreen
Backlight Driver	constant-current boost, 25mA or 50mA at up to 24V
Display Connector	40-pin FPC TFT
Supply Voltage (VIN)	3V to 5V DC
Max Display Resolution	800x480 pixels
Communication Interface	SPI
3.3V Regulator Output (3Vo)	at least 100mA
Max SPI Clock (CircuitPython)	6 MHz

RA8875 Overview

Part: RA8875 Touch Display Driver Board — Adafruit Type: TFT Display Driver Board Description: A powerful TFT driver board featuring the RA8875 chip, capable of controlling displays up to 800x480 pixels with hardware-accelerated graphics and resistive touchscreen support via SPI.

Operating Conditions:

Supply voltage: 3–5 VDC
Output voltage (3Vo): 3.3 V
Output current (3Vo): 100 mA (minimum)

Absolute Maximum Ratings:

Key Specs:

Display resolution: Up to 800x480 pixels
Onboard RAM: 768 KB
Logic compatibility: 3-5 V
Backlight booster output: 25 mA or 50 mA at up to 24 V
SPI baudrate (CircuitPython): 6 MHz (max stable)
Level shifter propagation delay: ~10 ns (CD74HC4050)

Features:

Supports 4", 5", or 7" TFT displays
Hardware-accelerated shapes (lines, rectangles, triangles, ellipses, round-rects)
Built-in English/European font set
4-wire resistive touchscreen support with IRQ pin
Onboard 3.3V regulator
Constant-current backlight booster
Level shifting for 3-5V logic compatibility
MISO tristate circuit (Rev E and later)

Applications:

Driving large TFT screens with microcontrollers lacking native display drivers
Adding resistive touch input to display projects

Package:

Breakout board with header pins
40-pin FPC connector for TFT display

Other Displays

SSD1306 – Solomon Systech, OLED Display Breakout Board
C6522QT – Dell Inc., Interactive Flat Panel Display
ERC12864FGF-2 – EastRising Technology Co., Limited, 128x64 Graphic LCD Module
ERC12864FRF-2 – EastRising Technology Co., Limited, 128x64 FSTN Graphic LCD Module
ERC12864FSF-2 – EastRising Technology Co., Limited, 128x64 FSTN Graphic LCD Module
ERC12864FYGF-2 – EastRising Technology Co., Limited, 128x64 Graphic LCD Module
ERC12864SBSF-2 – EastRising Technology Co., Limited, 128x64 Graphic LCD Module
gen4-RP2350-28 – 4D Systems, Microcontroller

All Displays datasheets All Adafruit datasheets (6)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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