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ILI9481
a-Si TFT LCD Single Chip Driver
320RGBx480 Resolution and 262K color
Datasheet
Version: V0.35
Document No.: ILI9481DS_V0.35.pdf
ILI TECHNOLOGY CORP.
8F, No. 38, Taiyuan St.,. Jhubei City, Hsinchu County 302,
Taiwan , R.O.C.
Tel.886-3-5600099; Fax.886-3-5600055
http://www.ilitek.com
a-Si TFT LCD Single Chip Driver
320RGBx480 Resolution and 262K color
ILI9481
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 2 of 142 Version: 0.35
Table of Contents
Section Page
1.
Introduction.................................................................................................................................................... 5
2. Features ........................................................................................................................................................ 5
3. Block Diagram............................................................................................................................................... 7
4. Pin Descriptions ............................................................................................................................................ 8
5. Pad Arrangement and Coordination............................................................................................................ 12
6. Block Function Description.......................................................................................................................... 22
7. Function Description ................................................................................................................................... 24
7.1. Display Bus Interface (DBI)............................................................................................................ 24
7.1.1. Write Cycle .......................................................................................................................... 25
7.1.2. Read Cycle .......................................................................................................................... 26
7.2. Serial Interface (Type C) ................................................................................................................ 28
7.2.1. Write Cycle and Sequence.................................................................................................. 28
7.2.2. Read Cycle and Sequence.................................................................................................. 30
7.2.3. Break and Pause Sequences.............................................................................................. 31
7.3. Display Pixel Interface (DPI) .......................................................................................................... 33
8. Command.................................................................................................................................................... 37
8.1. Command List ................................................................................................................................ 37
8.2. Command Description.................................................................................................................... 39
8.2.1. NOP (00h)............................................................................................................................ 39
8.2.2. Soft_reset (01h)................................................................................................................... 40
8.2.3. Get_power_mode (0Ah) ...................................................................................................... 41
8.2.4. Get_address_mode (0Bh) ................................................................................................... 43
8.2.5. Get_pixel_format (0Ch) ....................................................................................................... 45
8.2.6. Get_display_mode (0Dh)..................................................................................................... 46
8.2.7. Get_signal_mode (0Eh)....................................................................................................... 48
8.2.8. Get_diagnostic_result (0Fh) ................................................................................................ 49
8.2.9. Enter_sleep_mode (10h)..................................................................................................... 50
8.2.10. Exit_sleep_mode (11h)........................................................................................................ 52
8.2.11. Enter_Partial_mode (12h) ................................................................................................... 54
8.2.12. Enter_normal_mode (13h)................................................................................................... 55
8.2.13. Exit_invert_mode (20h) ....................................................................................................... 56
8.2.14. Enter_invert_mode (21h)..................................................................................................... 57
8.2.15. Set_display_off (28h)...........................................................................................................58
8.2.16. Set_display_on (29h)........................................................................................................... 59
8.2.17. Set_column_address (2Ah)................................................................................................. 60
8.2.18. Set_page_address (2Bh)..................................................................................................... 62
8.2.19. Write_memory_start (2Ch) .................................................................................................. 64
a-Si TFT LCD Single Chip Driver
320RGBx480 Resolution and 262K color
ILI9481
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 3 of 142 Version: 0.35
8.2.20.
Read_memory_start (2Eh) .................................................................................................. 66
8.2.21. Set_partial_area (30h)......................................................................................................... 68
8.2.22. Set_scroll_area (33h) .......................................................................................................... 71
8.2.23. Set_tear_off (34h)................................................................................................................ 76
8.2.24. Set_tear_on (35h)................................................................................................................ 77
8.2.25. Set_address_mode (36h).................................................................................................... 79
8.2.26. Set_scroll_start (37h) ..........................................................................................................82
8.2.27. Exit_idle_mode (38h)........................................................................................................... 84
8.2.28. Enter_idle_mode (39h)........................................................................................................ 85
8.2.29. Set_pixel_format (3Ah)........................................................................................................ 87
8.2.30. Write_Memory_Continue (3Ch)........................................................................................... 89
8.2.31. Read_Memory_Continue (3Eh)........................................................................................... 91
8.2.32. Set_Tear_Scanline (44h)..................................................................................................... 93
8.2.33. Get_Scanline (45h)..............................................................................................................94
8.2.34. Read_DDB_Start (A1h) ....................................................................................................... 95
8.2.35. Command Access Protect (B0h) ......................................................................................... 96
8.2.36. Frame Memory Access and Interface Setting (B3h) ........................................................... 97
8.2.37. Display Mode and Frame Memory Write Mode Setting (B4h)............................................. 99
8.2.38. Device Code Read (BFh) .................................................................................................. 100
8.2.39. Panel Driving Setting (C0h) ............................................................................................... 101
8.2.40. Display_Timing_Setting for Normal Mode (C1h)............................................................... 105
8.2.41. Display_Timing_Setting for Partial Mode (C2h) ................................................................ 107
8.2.42. Display_Timing_Setting for Idle Mode (C3h)..................................................................... 109
8.2.43. Frame Rate and Inversion Control (C5h) ...........................................................................111
8.2.44. Interface Control (C6h) ...................................................................................................... 112
8.2.45. Gamma Setting (C8h)........................................................................................................ 113
8.2.46. Power_Setting (D0h) ......................................................................................................... 114
8.2.47. VCOM Control (D1h) ......................................................................................................... 116
8.2.48. Power_Setting for Normal Mode (D2h) ............................................................................. 118
8.2.49. Power_Setting for Partial Mode (D3h)............................................................................... 120
8.2.50. Power_Setting for Idle Mode (D4h) ................................................................................... 122
8.2.51. NV Memory Write (E0h) .................................................................................................... 124
8.2.52. NV Memory Control (E1h) ................................................................................................. 125
8.2.53. NV Memory Status Read (E2h) ......................................................................................... 126
8.2.54. NV Memory Protection (E3h) ............................................................................................ 127
9. Display Data RAM..................................................................................................................................... 127
9.1. Configuration................................................................................................................................ 127
9.2. Memory to Display Address Mapping .......................................................................................... 129
9.3. Vertical Scroll Mode ..................................................................................................................... 130
a-Si TFT LCD Single Chip Driver
320RGBx480 Resolution and 262K color
ILI9481
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 4 of 142 Version: 0.35
10.
Tearing Effect Output ................................................................................................................................ 132
10.1. Tearing Effect Line Modes............................................................................................................ 132
10.2. Tearing Effect Line Timings .......................................................................................................... 133
11. NV Memory Programming Flow ................................................................................................................ 134
12. Gamma Correction.................................................................................................................................... 135
13. Application................................................................................................................................................. 136
13.1. Power Supply Configuration ........................................................................................................ 136
13.2. Voltage Generation ...................................................................................................................... 137
14. Electrical Characteristics........................................................................................................................... 137
14.1. Absolute Maximum Ratings ......................................................................................................... 137
14.2. DC Characteristics ....................................................................................................................... 138
14.3. Reset Timing Characteristics ....................................................................................................... 138
14.4. AC Characteristics ....................................................................................................................... 139
14.4.1. DBI Type B (18/16/9/8 bit) Interface Timing Characteristics ............................................. 139
14.4.2. DBI Type C Interface Timing Characteristics..................................................................... 140
14.4.3. DPI Interface Timing Characteristics ................................................................................. 141
15. Revision History ........................................................................................................................................ 142
a-Si TFT LCD Single Chip Driver
320RGBx480 Resolution and 262K color
ILI9481
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
Page 5 of 142 Version: 0.35
1. Introduction
ILI9481 is a 262,144-color single-chip SoC driver for a-TFT liquid crystal display with resolution of 320RGBx480
dots, comprising a 960-channel source driver, a 480-channel gate driver, 345,600
bytes GRAM for graphic data
of 320RGBx480 dots, and power supply circuit.
The ILI9481 supports 18-/16-/9-/8-bit data bus interface (DBI) and serial peripheral interfaces (SPI). It also
supplies 18-bit, 16-bit RGB interface (DPI) for driving video signal directly from application controller. The
moving picture area can be specified in internal GRAM by window address function. The specified window area
can be updated selectively, so that moving picture can be displayed simultaneously independent of still picture
area.
ILI9481 can operate with 1.65V I/O interface voltage, and an incorporated voltage follower circuit to generate
voltage levels for driving an LCD. The ILI9481 also supports a function to display in 8 colors and a sleep mode,
allowing for precise power control by software and these features make the ILI9481 an ideal LCD driver for
medium or small size portable products such as digital cellular phones, smart phone, MP3 and PMP where long
battery life is a major concern.
2. Features
Display resolution: [320xRGB](H) x 480(V)
Output:
¾ 960 source outputs
¾ 480 gate outputs
¾ Common electrode output
a-TFT LCD driver with on-chip full display RAM: 345,600 bytes
MCU Interface
¾ MIPI-DBI(Comply with MIPI DBI Version 2.00)
Type B 16-/18- bit, 8-/9-bit
Type C 4-line 9bit (Option 1), 8bit (Option 3)
¾ 16-bits, 18-bits RGB (DPI) interface
¾ MIPI DCS command sets
¾ 3-pin/4-pin serial interface
Display mode:
¾ Full color mode: 262K-colors
¾ Reduced color mode: 8-colors (3-bits MSB bits mode)
On chip functions:
¾ VCOM generator and adjustment
¾ Timing generator
¾ Oscillator
¾ DC/DC converter
¾ Line/frame inversion
MTP:
¾ 16-bit ID1 and ID2
¾ 6-bits for VCOM adjustment
Low -power consumption architecture
¾ Low operating power supplies:
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