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观海微GH8555BL-01 Driver IC Data Sheet
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观海微GH8555BL-01 Data Sheet 800RGBx1280 dot, 16.7M color, TFT Mobile Single Chip Driver
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GH8555BL-01
V1.3
Data Sheet
800RGBx1280 dot, 16.7M color,
TFT Mobile Single Chip Driver
2020.10
Contents
1 General Description ...................................................................................................................... 1
2 Features ........................................................................................................................................ 2
2.1 Display .......................................................................................................................................... 2
2.2 Display interface ........................................................................................................................... 2
2.3 Input voltage ranges ..................................................................................................................... 2
2.4 Output voltage ranges .................................................................................................................. 2
2.5 Miscellaneous of chip .................................................................................................................... 3
3 Device Overview ............................................................................................................................ 4
3.1 Device Block Diagram ................................................................................................................... 4
3.2 Pin description .............................................................................................................................. 5
4 Power Structure Description ......................................................................................................... 9
4.1 LCD power generation scheme (DC/DC Converter) ....................................................................... 9
4.2 Output voltage range .................................................................................................................. 10
4.3.1. General ....................................................................................................................................... 11
4.3.2. Power on sequence for differential power mode ........................................................................ 12
4.4.1 External power mode .................................................................................................................. 13
5 Maximum layout resistance ........................................................................................................ 16
6 Interface ...................................................................................................................................... 17
6.1 DSI system interface .................................................................................................................... 17
6.1.1 Command mode, Video mode and Virtual Channel .................................................................... 20
6.1.2 Power-up Sequence Example ...................................................................................................... 22
6.1.3 DSI Format .................................................................................................................................. 23
6.1.4 DSI Protocol................................................................................................................................. 25
6.1.4.1 Multiple Packets per Transmission.............................................................................................. 25
6.1.4.2 Endian Policy ............................................................................................................................... 27
6.1.4.3 Packet Structure .......................................................................................................................... 28
6.1.4.3.1 Long Packet ................................................................................................................................. 29
6.1.4.3.2 Short Packet ................................................................................................................................ 31
6.1.5. Common Packet Elements .......................................................................................................... 32
6.1.6. DSI packet ................................................................................................................................... 35
6.1.7. Peripheral to Processor Transmission ......................................................................................... 40
6.1.8. Format of Acknowledge and Error Report and Read Response Data Type ................................. 43
6.1.9. Video Mode Interface Timing ...................................................................................................... 45
6.1.10. Error-Correcting Code and Checksum ......................................................................................... 50
6.1.11. DPHY ........................................................................................................................................... 52
6.1.12. High Speed Transmission ............................................................................................................ 59
7 Gamma Structure Description ..................................................................................................... 64
7.1 Adjustable gamma characteristic ............................................................................................... 64
7.2 Grayscale-Level adjustment control ............................................................................................ 65
7.2.1. Variable resister ratio & Voltage levels ............................................................................................... 67
8 Function Description ................................................................................................................... 86
8.1 Tearing effect .............................................................................................................................. 86
8.1.1. Tearing effect output line............................................................................................................ 86
8.1.2. Tearing effect line timing ............................................................................................................ 87
8.3. Oscillator ..................................................................................................................................... 88
8.4. Output pins Characteristics ......................................................................................................... 89
9 Command .................................................................................................................................... 90
9.1 Command List ............................................................................................................................. 90
9.1.1. Standard command .................................................................................................................... 90
9.1.2. Standard Command Accessibility ................................................................................................ 93
9.1.3. Standard Command Default Modes and Values ......................................................................... 94
9.2 Command Description ................................................................................................................. 95
9.2.1. NOP (00h) ................................................................................................................................... 95
9.2.2. SWRESET: Software Reset (01h) .................................................................................................. 96
9.2.3. RDDIDIF: Read Display Identification Information (04h) ............................................................. 97
9.2.4. RDNUMPE: Read number of the parity errors (05h) ................................................................... 98
9.2.5. RDDST: Read Display Status (09h)............................................................................................... 99
9.2.6. RDDPM: Read Display Power Mode (0Ah) ................................................................................ 101
9.2.7. RDDMATCDL: Read Display MADCTL (0Bh) ............................................................................... 102
9.2.8. RDDCOLMOD: Read Display COLMOD (0Ch) ............................................................................. 103
9.2.9. Read Display Image Mode (0Dh)............................................................................................... 104
9.2.10. RDDSM: Read Display Signal Mode (0Eh) ................................................................................. 105
9.2.11. RDDSDR: Read Display Self-Diagnostic Result (0Fh).................................................................. 106
9.2.12. SLPIN: Enter Sleep In Mode (10h) .............................................................................................. 107
9.2.13. SLPOUT: Exit Sleep In Mode (11h) ............................................................................................. 108
9.2.14. INVOFF: Display Inversion Off (20h) .......................................................................................... 109
9.2.15. INVON: Display Inversion On (21h) ........................................................................................... 110
9.2.16. DISPOFF: Display Off (28h) ........................................................................................................ 111
9.2.17. DISPON: Display On (29h) ......................................................................................................... 112
9.2.18. TEOFF: Tearing Effect Line OFF (34h) ........................................................................................ 113
9.2.19. TEON: Tearing Effect Line ON (35h) .......................................................................................... 114
9.2.20. MADCTL: Memory Access Control(36h) .................................................................................... 115
9.2.21. IDMOFF: Idle Mode Off (38h) .................................................................................................... 116
9.2.22. IDMON: Idle Mode On (39h) ..................................................................................................... 117
9.2.23. COLMOD: Interface Pixel Format (3Ah) .................................................................................... 118
9.2.24. TESL: Set Tear Effect Scanline (44h) .......................................................................................... 119
9.2.25. GETSCAN: Get the Current Scanline (45h) ................................................................................. 120
9.2.26. WRDISBV: Write Display Brightness (51h) ................................................................................ 121
9.2.27. RDDISBV: Read Display Brightness Value (52h) ........................................................................ 122
9.2.28. WRCTRLD: Write CTRL Display (53h) ......................................................................................... 123
9.2.29. RDCTRLD: Read CTRL Value Display (54h) ................................................................................. 124
9.2.30. RDDDB: Read DDB Start (A1h) .................................................................................................. 125
9.2.31. RDDDBCON: Read DDB Continue (A8h) .................................................................................... 127
9.2.32. RDID1: Read ID1 (DAh) .............................................................................................................. 128
9.2.33. RDID2: Read ID2 (DBh) .............................................................................................................. 129
9.2.34. RDID3: Read ID3 (DCh) .............................................................................................................. 130
10 Electrical Specification .............................................................................................................. 131
10.3.1 Reset input timings ................................................................................................................... 133
10.3.2 DSI D-PHY electronic characteristics ......................................................................................... 134
10.3.2.1 The Description of D-PHY Layer................................................................................................. 134
10.3.2.2 The Electronic Characteristics of Low-Power Transmitter (TX) ................................................. 135
10.3.2.3 The Electronic Characteristics of Receiver (RX) ......................................................................... 136
10.3.2.4 Low-Power Receiver (RX) .......................................................................................................... 136
10.3.2.5 Line Contention Detection ......................................................................................................... 138
10.3.2.6 High-Speed Receiver (RX) .......................................................................................................... 139
10.3.2.7 High-Speed Data-Clock Timing .................................................................................................. 140
10.3.2.8 Data-Clock Timing Specifications .............................................................................................. 142
10.3.2.9 Burst Mode Data Transmission ................................................................................................. 143
10.3.3 Timings for DSI .......................................................................................................................... 146
10.3.3.1 Video mode Vertical Timings .................................................................................................... 146
10.3.3.2 Horizontal Timings .................................................................................................................... 147
11 Bump center coordinates .......................................................................................................... 148
12 Chip information ....................................................................................................................... 179
12.1 Bump Up View .......................................................................................................................... 179
12.2 Chip Size .................................................................................................................................... 179
12.3 Alignment Mark ........................................................................................................................ 180
12.4 Alignment Mark ........................................................................................................................ 181
13 Revision History......................................................................................................................... 182
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