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.
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)
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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.
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 ℃...
(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.
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.
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).
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)
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.
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...
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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