Adafruit
Adafruit 1.54" Tri-Color eInk / ePaper 200x200 Display with SRAM
The Adafruit 1.54" Tri-Colour eInk Display brings electronic paper technology to your microcontroller projects. Featuring a 200×200 pixel display with black,...
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The Adafruit 1.54" Tri-Colour eInk Display brings electronic paper technology to your microcontroller projects. Featuring a 200×200 pixel display with black, red, and white ink, this breakout delivers high-contrast, daylight-readable visuals that persist even when power is completely disconnected — just like printed paper.
An onboard SRAM chip offloads the two-colour frame buffer (10KB for black + red layers) from your microcontroller's memory, sharing the same SPI bus as the display with just one extra pin. Compose your image in SRAM and transfer it to the eInk panel when ready, keeping your microcontroller's RAM free for other tasks.
Key Features
- 200×200 Tri-Colour eInk – Black and red pixels on a white background for eye-catching displays
- Onboard SRAM – Offloads the 10KB frame buffer so your microcontroller doesn't need spare RAM
- Ultra-Low Power – Image persists with no power; Enable pin lets you shut down SRAM, MicroSD, and display completely
- MicroSD Card Slot – Store images, text files, and other display content
- 3/5V Compatible – Onboard 3.3V regulator with logic-level safe inputs
- SPI Interface – Works with any microcontroller platform
Also Available
Ideal For
- Low-power signage with colour highlights
- E-reader and digital label projects
- Battery-powered status indicators and dashboards
- Name badges, shelf tags, and price displays
Package Contents
- 1× Adafruit 1.54" Tri-Colour eInk display breakout with SRAM
- 1× Header strip
Jargon buster
Plain-language definitions for the technical terms used above.
- 3.3V regulator
- A 3.3V regulator is a power circuit that provides a steady 3.3 volts for parts that need that supply voltage. On a breakout board, it can let the sensor run safely even when the connected microcontroller or power source uses a higher voltage.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- frame buffer
- A frame buffer is memory that stores a complete image before it is shown on a display. Displays without their own frame buffer need the controller to continuously send pixel data, which affects the choice of microcontroller and software library.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- microSD card
- A microSD card is a small removable flash memory card used to store data such as audio, images, logs or program files. Its capacity and formatting (often FAT32 or exFAT) affect how much can be stored and whether the card needs preparing before use.
- RAM
- RAM (random-access memory) is fast, temporary memory a device uses for working data while it is running; in its common volatile form, its contents are lost when power is removed. Some devices offer a mode that applies settings to RAM only, which is handy for testing changes temporarily because they are not stored permanently and disappear at power-off.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
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