Adafruit
Adafruit 1.54 Monochrome eInk / ePaper Display with SRAM - 200x200 Monochrome
The Adafruit 1.54" Monochrome eInk Display brings electronic paper technology to your microcontroller projects. Featuring a 200×200 pixel black-and-white dis...
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The Adafruit 1.54" Monochrome eInk Display brings electronic paper technology to your microcontroller projects. Featuring a 200×200 pixel black-and-white display, 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 frame buffer from your microcontroller's memory, sharing the same SPI bus as the display with just one extra pin. This means you can 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 Monochrome eInk – High-contrast black pixels on a white background
- Onboard SRAM – Offloads frame buffer so your microcontroller doesn't need 8KB of spare RAM
- Ultra-Low Power – Image persists with no power; Enable pin lets you shut down SRAM and display completely
- Fast Refresh – Updates in a couple of seconds (much faster than tri-colour eInk displays)
- 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 and information displays
- E-reader and digital label projects
- Battery-powered status indicators
- Name badges and shelf tags
Package Contents
- 1× Adafruit 1.54" Monochrome eInk display breakout with SRAM
- 1× Header strip
Specifications
- Display Size – 1.54" diagonal
- Resolution – 200×200 pixels
- Colours – Monochrome (black and white)
- Overall Dimensions – 43.5mm × 43mm × 4.6mm (1.7" × 1.6" × 0.18")
- Display Area – 28mm × 28mm (1.1" × 1.1")
- Mounting Holes – 4× 0.1" / 2.5mm in corners
- Weight – 8.8g
- Interface – SPI
- Logic Level – 3.3V or 5V
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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