User Manual DEPG0266RWS800F34 (DKE) - 10

EPD Module User Manual
6.3 Panel DC Characteristics(Driver IC Internal Regulators)
The following specifications apply for: VSS=0V, VCI=3.0V, TOPR =23ºC.
Parameter Symbol Condition Applicable pin Min. Typ. Max. Unit
VCOM output voltage VCOM - VCOM - TBD - V Positive Source output voltage VSH - S0~S151 +14.5 +15 +15.5 V Negative Source output voltage VSL - S0~S151 -15.5 -15 -14.5 V Positive gate output voltage Vgh - G0~G295 +19 +20 +21 V Negative gate output voltage Vgl - G0~G295 -21 -20 -19 V
Notes:VGH,VGL,VSH,VSL drop voltage<2V. 6.4 Panel AC Characteristics 6.4.1 MCU Interface Selection
The pin assignment at different interface mode is summarized in Table 6-4-1. Different MCU mode can be set by hardware selection on BS1 pins. The display panel only supports 4-wire SPI or 3-wire SPI interface mode.
Pin Name Data/Command Interface Control Signal
Bus interface SDA SCL CS# D/C# RES# BS1=L 4-wire SPI SDA SCL CS# D/C# RES# BS1=H 3-wire SPI SDA SCL CS# L RES#
6.4.2 MCU Serial Interface (4-wire SPI)
The serial interface consists of serial clock SCL, serial data SDA, D/C#, CS#. This interface supports Write mode and Read mode.
Function CS# D/C# SCL
Write command L L ↑ Write data L H ↑
Note: ↑ stands for rising edge of signal
In the write mode SDA is shifted into an 8-bit shift register on every rising edge of SCL in the order of D7, D6, ... D0. The level of D/C# should be kept over the whole byte . The data byte in the shift register is written to the Graphic Display Data RAM /Data Byte register or command Byte register according to D/C# pin.
Figure 6-1: Write procedure in 4-wire SPI mode
DKE CO.,LTD Page 10of33 Document Outline Update: 13. Packaging 1. Over View 2. Features 3. Mechanical and Optical Specification . 4.Mechanical Drawing of EPD Module 5. Input/output Pin Assignment 6. Electrical Characteristics 6.1 Absolute Maximum Rating 6.2 Panel DC Characteristics 6.3 Panel DC Characteristics(Driver IC Internal Re Notes:VGH,VGL,VSH,VSL drop voltage<2V. 6.4 Panel AC Characteristics 6.4.1 MCU Interface Selection 6.4.2 MCU Serial Interface (4-wire SPI) 6.4.3 MCU Serial Interface (3-wire SPI) 6.4.4 Interface Timing 7.Command Table 9. Typical Application Circuit with SPI Interface 10.Typical Operating Sequence 10.1 LUT from OTP Operation Flow 10.2 LUT from OTP Operation Reference Program Code ACTION VALUE/DATA COMMENT POWER ON 3v delay 10ms PIN CONFIG RESE# low Hardware reset delay 200us RESE# high delay 200us Read busy pin Wait for busy low Command 0x12 Software reset Read busy pin Wait for busy low SET VOLTAGE AND LOAD LUT LOAD IMAGE AND UPDATE Command 0x24 5624bytes Load BW image (152/8*296)(BW) Command 0x26 5624bytes Load image (152/8*296) (RED) Command 0x20 Read busy pin Wait for busy low Command 0x10 Data 0X01 Enter deep sleep mode POWER OFF 11. Reliability Test 12. Quality Assurance 12.1 Environment 12.2 Illuminance 12.3 Inspect method 12.4 Display area 12.5 Ghosting test method 12.6 Inspection items and acceptance criteria 12.6.1Electric defect 12.6.2 Visual defect 13.Packaging 14. Handling, Safety, and Environment Requirement