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4.2inch e-Paper (B) V2
User Manual

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Summary of Contents for Waveshare 4.2inch e-Paper B V2

  • Page 1 4.2inch e-Paper (B) V2 User Manual...
  • Page 2 4.2inch e-Paper (B) V2 User Manual Revision History Version Content Date Page New creation 2025/02/21...
  • Page 3: Table Of Contents

    4.2inch e-Paper (B) V2 User Manual Contents 1. OVERVIEW ................................1 2. FEATURES ................................2 3. MECHANICAL AND OPTICAL SPECIFICAITONS ....................3 4. MECHANICAL DRAWING OF EPD MODULE ......................4 5. PIN ASSIGNMENT ..............................5 6. ELECTRICAL CHARACTERISTICS ...........................7 6.1 ABSOLUTE MAXIMUM RATING .........................7 6.2 PANEL DC CHARACTERISTICS ........................
  • Page 4: Overview

    4.2inch e-Paper (B) V2 User Manual 1. OVERVIEW 4.2inch e-Paper (B) V2 is an Active Matrix Electrophoretic Display (AM EPD), with interface and a reference system design. The display is capable to display images at 1 bit white, black and red full display capabilities.
  • Page 5: Features

    4.2inch e-Paper (B) V2 User Manual 2. FEATURES  400 × 300 pixels display  High contrast  High reflectance  Ultra wide viewing angle  Ultra low power consumption  Pure reflective mode  Bi-stable display  Commercial temperature range ...
  • Page 6: Mechanical And Optical Specificaitons

    4.2inch e-Paper (B) V2 User Manual 3. MECHANICAL AND OPTICAL SPECIFICATIONS Parameter Specifications Unit Remark Screen Size Inch Display Resolution 400(H)×300(V) Pixel DPI:132 Active Area 84.8×63.6 Pixel Pitch 0.212×0.212 Pixel Configuration Rectangle Outline Dimension 91(H)×77(V)×1.2(D) Weight 16.1±0.3...
  • Page 7: Mechanical Drawing Of Epd Module

    4.2inch e-Paper (B) V2 User Manual 4. MECHANICAL DRAWING OF EPD MODULE Notes: 4-1: Display mode: EPD, B/W/R; 4-2: Resolution ratio: 4.2″, 400 × 300; 4-3: Operating voltage: VCI=3.0V; 4-4: Operating temp: 0℃~40℃; 4-5: Storage temp: -25℃~60℃; 4-6: Controller/driver: SSD1683; 4-7: Unspecified tolerance: ±0.2;...
  • Page 8: Pin Assignment

    4.2inch e-Paper (B) V2 User Manual 5. PIN ASSIGNMENT Name Description Remark Do not connect with other NC pins Keep open N-Channel MOSFET Gate Drive Control RESE Current Sense Input for the Control Loop Do not connect with other NC pins Keep open VSH2 Positive Source driving voltage (Red)
  • Page 9 4.2inch e-Paper (B) V2 User Manual be interpreted as command. 5-3: This pin(RES#) is reset signal input. The Reset is active low. 5-4: This pin is Busy state output pin. When Busy is Low, the operation of the chip should not be interrupted, the command should not be sent.
  • Page 10: Electrical Characteristics

    4.2inch e-Paper (B) V2 User Manual 6. ELECTRICAL CHARACTERISTICS 6.1 ABSOLUTE MAXIMUM RATING Parameter Symbol Rating Unit Logic supply voltage -0.5 to +6.0 Logic Input voltage -0.5 to VCI +0.5 Logic Output voltage -0.5 to VCI +0.5 Operating Temp range 0 to +40 ℃...
  • Page 11: Panel Ac Characteristics

    (2). The deep sleep power is the consumed power when the panel controller is in deep sleep mode. (3). The listed electrical/optical characteristics are only guaranteed under the controller & waveform provided by Waveshare. 6.3 PANEL AC CHARACTERISTICS 6.3.1 MCU Interface Selection The IC can support 3-wire/4-wire serial peripheral.
  • Page 12: Mcu Serial Interface (4-Wire Spi)

    4.2inch e-Paper (B) V2 User Manual 6.3.2 MCU Serial Interface (4-wire SPI) The 4-wire SPI consists of serial clock SCL, serial data SDA, D/C#, CS#. This control pins status in 4-wire SPI in writing command/data is shown in Table 6-3-2 and the write procedure 4-wire SPI is shown in Figure 6-3-1.
  • Page 13: Interface Timing

    4.2inch e-Paper (B) V2 User Manual Function SCL pin SDA pin D/C# pin CS# pin Write command ↑ Command bit Tie LOW Write data ↑ Data bit Tie LOW Table 6-3-3: Control pins status of 3-wire SPI Notes: L is connected to VSS and H is connected to VDDIO. (1).
  • Page 14 4.2inch e-Paper (B) V2 User Manual...
  • Page 15: Command Table

    4.2inch e-Paper (B) V2 User Manual 7. COMMAND TABLE...
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  • Page 21 4.2inch e-Paper (B) V2 User Manual...
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  • Page 23 4.2inch e-Paper (B) V2 User Manual...
  • Page 24 4.2inch e-Paper (B) V2 User Manual...
  • Page 25 4.2inch e-Paper (B) V2 User Manual...
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  • Page 29: Optical Specifications

    4.2inch e-Paper (B) V2 User Manual 8. OPTICAL SPECIFICATIONS Measurements are made with that the illumination is under an angle of 45 degree, the detection is perpendicular unless otherwise specified. Parameter Symbol Parameter Typ. Units Notes White Reflectivity White Contrast Ratio Indoor 2Grey Level DS+(WS-DS)*n(m-1)
  • Page 30: Handling, Safety, And Environment Requirements

    4.2inch e-Paper (B) V2 User Manual 9. HANDLING, SAFETY, AND ENVIRONMENT REQUIREMENTS WARNING The display glass may break when it is dropped or bumped on a hard surface. Handle with care. Should the display break, do not touch the electrophoretic material. In case of contact with electrophoretic material, wash with water and soap.
  • Page 31: Reliability Test

    4.2inch e-Paper (B) V2 User Manual 10. RELIABILITY TEST Test Items Test Conditions T= -25°C, 240h Low-Temperature Storage Test in white pattern T= 60°C, RH=40%, 240h High-Temperature Storage Test in white pattern High-Temperature Operation T= 40°C, RH=35%, 240h Low-Temperature Operation 0°C, 240h High-Temperature, High-Humidity Operation T= 40°C, RH=80%, 240h...
  • Page 32: Block Diagram

    4.2inch e-Paper (B) V2 User Manual 11. BLOCK DIAGRAM...
  • Page 33: Reference Circuit

    4.2inch e-Paper (B) V2 User Manual 12. REFERENCE CIRCUIT...
  • Page 34: Typical Operating Sequence

    4.2inch e-Paper (B) V2 User Manual 13. TYPICAL OPERATING SEQUENCE 13.1 NORMAL OPERATION FLOW...
  • Page 35: Normal Operation Reference Program Code

    4.2inch e-Paper (B) V2 User Manual 13.2 NORMAL OPERATION REFERENCE PROGRAM CODE...
  • Page 36: Inspection Conditions

    4.2inch e-Paper (B) V2 User Manual 14. INSPECTION CONDITIONS 14.1 ENVIRONMENT Temperature: 25±3℃ Humidity: 55±10%RH 14.2 ILLUMINANCE Brightness: 1200~1500LUX Distance: 20-30CM Angle: Relate 45° surround 14.3 INSPECTION METHOD 14.4 DISPLAY AREA...
  • Page 37: Inspection Stanard

    4.2inch e-Paper (B) V2 User Manual 14.5 INSPECTION STANDARD 14.5.1 Electric Inspection Standards...
  • Page 38: Appearance Inspection Standards

    4.2inch e-Paper (B) V2 User Manual 14.5.2 Appearance Inspection Standards...
  • Page 39 4.2inch e-Paper (B) V2 User Manual...
  • Page 40: Precations

    4.2inch e-Paper (B) V2 User Manual 15. PRECAUTIONS (1) Do not apply pressure to the EPD panel in order to prevent damaging it. (2) Do not connect or disconnect the interface connector while the EPD panel is in operation. (3) Do not touch IC bonding area. It may scratch TFT lead or damage IC function. (4) Please be mindful of moisture to avoid its penetration into the EPD panel, which may cause damage during operation.

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