SPECIFICATION Product Type : EPD Description : Screen Size: 1.54" Color: Black and White Display Resolution: 200*200 Issue Date : 2017.02.
Revision History Rev. Issued Date 1.0 Aug.14.2014 Preliminary 2.0 Feb.27.2017 In part 7-5: Modify Reference Circuit www.waveshare.
CONTENTS NO. ITEM PAGE - Cover 1 - Revision History 2 - Contents 3 1 Application 4 2 Features 4 3 Mechanical Specifications 4 4 Mechanical Drawing of EPD module 5 5 Input/Output Terminals 6 6 Command Table 8 7 Electrical Characteristics 13 8 Typical Operating Sequence 20 9 Optical Characteristics 21 10 Handling, Safety and Environment Requirements 23 11 Reliability test 24 12 Packing 25 www.waveshare.
1. Over View The display is a TFT active matrix electrophoretic display, with interface and a reference system design. The 1.54inch active area contains 200×200 pixels, and has 1-bit full display capabilities. An integrated circuit contains gate buffer, source buffer, interface, timing control logic, oscillator, DC-DC. SRAM, LUT, VCOM, and border are supplied with each panel. 2.
[在此处键入] 4. Mechanical Drawing of EPD module www.waveshare.com WAVESHARE CO.
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[在此处键入] command. Note 5-3: This pin (RES#) is reset signal input. The Reset is active Low. Note 5-4: This pin (BUSY) is Busy state output pin. When Busy is High, the operation of chip should not be interrupted and any commands should not be issued to the module. The driver IC will put Busy pin High when the driver IC is working such as: - Outputting display waveform; or - Programming with OTP Note 5-5: This pin (BS1) is for 3-line SPI or 4-line SPI selection. When it is “Low”, 4-line SPI is selected.
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[在此处键入] R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command 0 0 10 0 0 0 1 0 0 0 0 Deep Sleep mode 0 1 0 0 0 0 0 0 0 Description Deep Sleep mode Control A0 A[0] : 0 1 0 0 0 1 11 0 0 0 0 0 0 1 0 0 0 0 A2 0 A1 Description Normal Mode [POR] Enter Deep Sleep Mode 1 Data Entry mode Define data entry sequence A [1:0] = ID[1:0] A0 setting Address automatic increment / decrement setting The setting of incrementing or decrementing of the address counter can be made independently in each upper and lo
[在此处键入] R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 0 0 21 0 0 1 0 0 0 0 1 0 1 0 A4 A3 A2 A1 A0 A7 0 Command Display Update Control 1 Description Option for Display Update Bypass Option used for Pattern Display, which is used for display the RAM content into the Display OLD RAM Bypass option A [7] A[7] = 1: Enable bypass A[7] = 0: Disable bypass [POR] A[4] value will be used as for bypass.
[在此处键入] R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command Description 0 0 24 0 0 1 0 0 1 0 0 Write RAM After this command, data entries will be written into the RAM until another command is written. Address pointers will advance accordingly.
[在此处键入] R/W# D/C# Hex D7 D6 D5 D4 D3 D2 D1 D0 Command 0 0 44 0 1 0 0 0 1 0 0 Set RAM X 0 1 0 0 0 A4 A3 A2 A1 A0 address Start / End position 0 1 0 0 0 B4 B3 B2 B1 B0 0 0 0 0 0 0 0 0 1 1 1 1 0 1 0 0 0 0 1 1 0 1 45 Description Specify the start/end positions of the window address in the X direction by an address unit A[4:0]: XSA[4:0], XStart, POR = 00h B[4:0]: XEA[4:0], XEnd, POR = 18h Set Ram Y- address Specify the start/end positions of the Start / End position window address in the Y direction by
[在此处键入] 7. Electrical Characteristics 7-1) Absolute maximum rating Parameter Logic Supply Voltage Symbol VCI Rating -0.5 to +3.6 Unit V Logic Input Voltage VIN -0.5 to VCI +0.5 V Logic Output Voltage VOUT -0.5 to VCI +0.5 Operating Temp. range TOPR 0 to +50 V ℃ Storage Temp. range TSTG -25 to +70 ℃ 7-2) Panel DC Characteristics The following specifications apply for : VSS = 0V, VCI = 3.
[在此处键入] - Vcom is recommended to be set in the range of assigned value ± 0.1V. Note 7-1: The Typical power consumption 7-3) Panel AC Characteristics 7-3-1) Oscillator frequency The following specifications apply for : VSS = 0V, VCI = 3.0V, TA = 25℃ Parameter Internal Oscillator frequency Symbol Fosc Conditions VCI=2.4 to 3.7V Min 0.95 Typ 1 Max 1.05 Unit MHz 7-3-2) MCU Interface 7-3-2-1) MCU Interface Selection In this module, there are 4-wire SPI and 3-wire SPI that can communicate with MCU.
[在此处键入] SDIN is shifted into an 8-bit shift register in the order of D7, D6, ... D0. The data byte in the shift register is written to the Graphic Display Data RAM (RAM) or command register in the same clock. Under serial mode, only write operations are allowed.
[在此处键入] CS# SDIN/ SCLK DB1 DB2 DBn SCLK SDIN(D1) D/C# D7 D6 D5 D4 D3 D2 D1 D0 Figure 7-2: Write procedure in 3-wire Serial Peripheral Interface mode 7-3-3) Timing Characteristics of Series Interface (VCI - VSS = 1.8 V to 2.
[在此处键入] D/C# t AS t AH t CSS CS# t CSH t t cycle t CLKH CLKL SCLK(D 0) tF tR t DSW SDIN(D 1) t DHW Valid Data CS# SCLK(D0) SDIN(D1) D7 D6 D5 D4 D3 D2 D1 D0 Figure 7-3 : Serial peripheral interface characteristics 7-4) Power Consumption Parameter Panel power consumption during update Symbol - Conditions - TYP 26.4 Max 40 Unit mW Remark - Power consumption in standby mode - - - 0.017 mW - www.waveshare.
[在此处键入] 7-5) Reference Circuit 7-5-1) Reference Circuit for Panel Figure 7-5 (1) www.waveshare.
[在此处键入] 7-5-2) Reference Circuit for Temperature Sensor: Temperature Sensor I2C bus need to be connected with CPU. Figure 7-5 (2) 7-6) Block Diagram www.waveshare.
[在此处键入] 8. Typical Operating Sequence Normal Operation Flow Power On (Apply VCI) Reset the EPD driver IC Define the display size and the RAM address Turn on oscillator clock and DC/DC & regulator to generate the driving voltage Get temperature from external temperature sensor, then, load a waveform from OTP or code to LUT. Clear the EPD Load image data and Display the image on EPD Turn off oscillator clock and DC/DC & regulator Power down www.waveshare.
[在此处键入] 9. Optical characteristics 9-1) Specifications Measurements are made with that the illumination is under an angle of 45 degrees, the detection is perpendicular unless otherwise specified.
[在此处键入] 9-3) Reflection Ratio The reflection ratio is expressed as : R = Reflectance Factor white board x (L center / L white board ) L center is the luminance measured at center in a white area (R=G =B=1) . L white board is the luminance of a standard white board . Both are measured with equivalent illumination source . The viewing angle shall be no more than 2 degrees . www.waveshare.
[在此处键入] 10. HANDLING，SAFETY AND ENVIROMENTAL 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. CAUTION The display module should not be exposed to harmful gases , such as acid and alkali gases , which corrode electronic components.
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[在此处键入] 12. Packing www.waveshare.
