1.54inch e-Paper (C)

Introduction

152x152, 1.54inch E-Ink display module, three-color, SPI interface

Interfaces

VCC	3.3V
GND	GND
DIN	SPI MOSI
CLK	SPI SCK
CS	SPI chip select (Low active)
DC	Data/Command control pin (High for data, and low for command)
RST	External reset pin (Low for reset)
BUSY	Busy state output pin (Low for busy)

Working principle

Introduction

This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspending in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under sunshine, the E-paper screen still has high visibility with a wide viewing angle of 180 degree. It is the ideal choice for E-reading.

Communication protocol

Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has display requirement.

CS is slave chip select, when CS is low, the chip is enabled.
DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
SCLK is the SPI communication clock.
SDIN is the data line from the master to the slave in SPI communication.

SPI communication has data transfer timing, which is combined by CPHA and CPOL.

CPOL determines the level of the serial synchronous clock at idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
CPHA determines whether data is collected at the first clock edge or at the second clock edge of serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.

There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. In here, SPI0 is in used, and data is transferred by bits, MSB first.

Documentation

Demo code

Github

Datasheets

Datasheets

Related Resources

This is a post in Arduino Form about our SPI e-Paper thanks to ZinggJM, maybe you want to refer to.

Waveshare e-Paper display with SPI

Question:

Working requirements of e-Paper?

Answer:

Two-color B/W e-paper
- 【Working】Temperature: 0~50°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 6 months
- 【Transport】Temperature: -25~70°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h
Three-Color e-Paper
- 【Working】Temperature: 0~40°C; Humidity: 35%~65%RH
- 【Storage】Temperature: ≤30°C; Humidity: ≤55%RH; Max storage time: 3 months
- 【Transport】Temperature: -25~60°C; Max transport time: 10 days
- 【Unpack】Temperature: 20°C±5°C; Humidity: 50%RH±5%RH; Max storage time: Should be assembled in 72h

When store three-color e-Paper, please refresh it to white, and keep the screen upward. Note that you need to update it at least every three months.

Question:

What do you need to note about e-Paper refreshing?

Answer:

Refresh mode
- Full refresh: e-Paper flicker when full refreshing to remove ghost image for best display.
- Partial refresh: It don't flicker if you use partial refresh (only some of the two-color e-paper support partial refresh). Note that you cannot use Partial refresh all the time, you should full refresh e-paper regularly, otherwise, ghost problem will get worse even damage.
Refresh rate
- When using, you should set the update interval at least 180s.(except Partial supportable types)
- Please set the e-Paper to sleep mode or power off it directly, otherwise, the e-Paper is damaged because of working in high voltage for long time.
- You need to update the content of three-color e-Paper at least one time every 24h to avoid from burn-in problem.
Working place
We recommend you to use the e-Paper indoor. If you need to set the e-paper outdoor, Please place the e-paper in shadow and protect it from UV. When you designed you e-paper product, you should take care about the working situation like temperature, humidity, etc.

Question:

How much could the flexible e-paper be bended

Answer:

The IC part of e-Paper cannot be bended, you can bend the display area in degree larger than 60°C

Question:

Why the e-Paper cant work with Arduino?

Answer:

The I/O level of Arduino is 5V, and the e-Paper should be driven with 3V3. If your Arduino cant drive the e-Paper successfully, please try to convert the level to 3.3V

You can also try to connect the Vcc pin to the 5V of Arduino to see whether the e-Paper works, but we recommend you not to use 5V for a long time.

Question:

Why does the color of e-Paper look a little black or grey?

Answer:

You can try to change the value of Vcom on demo codes.

Question:

Three-color e-paper looks more red/yellow than the picture on website?

Answer:

Because of different batch, some of them have aberration. Store the e-Paper right side up will reduce it. And if the e-Paper didn't be refreshed for long time, it will become more and more red/yellow. Please use the demo code to refresh the e-paper for several times in this case.

Question:

Why my e-paper has ghosting problem after working for some days

Answer:

Please set the e-paper to sleep mode or disconnect it if you needn't refresh the e-paper but need to power on your development board or Raspberry Pi for long time.Otherwise, the voltage of panel keeps high and it will damage the panel

Question:

Why the FPC of the e-Paper is broken after using for some times?

Answer:

Please make sure you have used it in correct way.

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com

TAG： Raspberry Pi Pico 2 RP2350 GEEK 1.14 inch LCD 240x135 65K SWD/UART/I2C For OpenOCD/CMSIS-DAP Raspberry Pi Pico 2 RP2350B Industrial 8-Channel Relay IOT LAN Digital Input DIO /RS485 /RJ45 Ethernet /POE English Character Display Principle FLASH File System Operation Pi5 Pure- ESP32 S3 LCD 1.3 inch Holographic Display Screen 1.3inch 3D Transparent Refractive Prism Mini TV For Arduino Sensor Raspberry Pi Pico 2 RP2350 4inch LCD CAN RS485 QMI8658 Development Board 480x480 TouchScreen Display LVGL HMI I2C Sensor Raspberry Pi 9.7 inch e-Paper HAT+ (E) E-Ink E6 Full color 1120x784 Screen Display For Arduino /STM32 /ESP32/Jetson Nano CAM-GC2083 Milk-V Duo S User Guide Total Raspberry Pi 5 PD Trigger 树莓派Pico 2 RP2350B-Plus-W开发板WIFI官方Radio Module 2 Raspberry Pi 5 PCIe to M.2 NVMe SSD Adapter Board (D) HAT Pi5-2280-2242-2230 Jetson Orin 4G/3G/2G expansion board GNSS GPS SIM7600G-H-M.2 Industrial USB TO RS485 Isolated Bidirectional Converter Original FT232RNL 1200m Long Distance ESP32 Raspberry Pi Pico 10.1inch DVI LCD UGV Rover PT AI OpenCV Robot Car MediaPipe For Raspberry Pi ESP32 S3 AI 1.75 inch Development Board with 1.75inch AMOLED Touchscreen Round Screen Deepseek

1.54inch E Ink Raw Display, yellow/black/white three color, 152x152

TAG： Raspberry Pi5 PCIe M.2 NVMe Solid State Drive 128 256 512G 1TB SSD 2280 2242 Sipeed NanoKVM-Pro 4K IP-KVM Remote Control Operation and Maintenance Server Raspberry Pi Pico 2 RP2350 bit board Size & Port high Compatible With BBC Micro:bit Raspberry Pi 5inch Display 1024x600 HDMI Resistive TouchScreen 5 inch LCD G Mini PC Computer Raspberry Pi SpeedyBee F405 V3 BLS 60A FC ESC Stack Flight Controller DJI FPV Drone Raspberry Pi 5 PD Induction ESP32-S3 1.28inch Raspberry Pi PICO LoRa-HF Raspberry Pi 5 DSI DeepSeek ESP32-S3 Voice Chat Robot 0.49inch OLED Screen Display 64×32 SSD1315 Arduino Raspberry Pi ESP32 Pico STM32 Raspberry Pi 5 Camera Serial UART Magnetic Encoder Bus Servo TTL ST3235 30KG.CM High Precision Large Torque Raspberry Pi Pico 2 P2350-Plus Smart Car Kit PicoGo2 Autonomous Driving Learning Car Raspberry Pi 5 case SpotPear Raspberry Pi 5 PoE MINI HAT (J) 5V/5A Power over RJ45 Ethernet 802.3af/at Moudle for Pi5/CM5 ESP32 C3 ST7789 Raspberry Pi 5 Active Cooler