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ILI9325(ILI9325_datasheet).pdf
ILI9325
a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
Datasheet
Preliminary
Version: V0.35
Document No.: ILI9325DS_V0.35.pdf
ILI TECHNOLOGY CORP.
4F, No. 2, Tech. 5th Rd., Hsinchu Science Park,
Taiwan 300, R.O.C.
Tel.886-3-5670095; Fax.886-3-5670096
http://www.ilitek.com
a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
Table of Contents
7.1.
7.2.
Section Page
1.
Introduction.................................................................................................................................................... 7
2. Features ........................................................................................................................................................ 7
3. Block Diagram............................................................................................................................................... 9
4. Pin Descriptions .......................................................................................................................................... 10
5. Pad Arrangement and Coordination............................................................................................................ 14
6. Block Description ........................................................................................................................................ 21
7. System Interface ......................................................................................................................................... 24
Interface Specifications .................................................................................................................. 24
Input Interfaces .............................................................................................................................. 25
7.2.1.
i80/18-bit System Interface.................................................................................................. 26
i80/16-bit System Interface.................................................................................................. 27
7.2.2.
7.2.3.
i80/9-bit System Interface.................................................................................................... 28
i80/8-bit System Interface.................................................................................................... 28
7.2.4.
7.3. Serial Peripheral Interface (SPI) .................................................................................................... 29
7.4. VSYNC Interface............................................................................................................................ 34
7.5. RGB Input Interface ....................................................................................................................... 38
7.5.1. RGB Interface...................................................................................................................... 39
7.5.2. RGB Interface Timing .......................................................................................................... 40
7.5.3. Moving Picture Mode........................................................................................................... 42
7.5.4. 6-bit RGB Interface.............................................................................................................. 43
7.5.5. 16-bit RGB Interface............................................................................................................ 44
7.5.6. 18-bit RGB Interface............................................................................................................ 44
Interface Timing.............................................................................................................................. 47
8. Register Descriptions .................................................................................................................................. 48
8.1. Registers Access............................................................................................................................ 48
8.2.
Instruction Descriptions.................................................................................................................. 51
8.2.1.
Index (IR)............................................................................................................................. 53
8.2.2. Start Oscillation (R00h)........................................................................................................ 53
8.2.3. Driver Output Control (R01h) .............................................................................................. 53
8.2.4. LCD Driving Wave Control (R02h) ...................................................................................... 55
8.2.5. Entry Mode (R03h) .............................................................................................................. 55
8.2.6. Resizing Control Register (R04h)........................................................................................ 58
8.2.7. Display Control 1 (R07h) ..................................................................................................... 59
8.2.8. Display Control 2 (R08h) ..................................................................................................... 60
8.2.9. Display Control 3 (R09h) ..................................................................................................... 61
8.2.10. Display Control 4 (R0Ah)..................................................................................................... 62
8.2.11. RGB Display Interface Control 1 (R0Ch)............................................................................. 63
7.6.
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 111
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240RGBx320 Resolution and 262K color
ILI9325
8.2.12. Frame Marker Position (R0Dh) ........................................................................................... 64
8.2.13. RGB Display Interface Control 2 (R0Fh)............................................................................. 64
8.2.14. Power Control 1 (R10h)....................................................................................................... 65
8.2.15. Power Control 2 (R11h) ....................................................................................................... 66
8.2.16. Power Control 3 (R12h)....................................................................................................... 67
8.2.17. Power Control 4 (R13h)....................................................................................................... 67
8.2.18. GRAM Horizontal/Vertical Address Set (R20h, R21h) ........................................................ 68
8.2.19. Write Data to GRAM (R22h)................................................................................................ 68
8.2.20. Read Data from GRAM (R22h) ........................................................................................... 69
8.2.21. Power Control 7 (R29h)....................................................................................................... 70
8.2.22. Frame Rate and Color Control (R2Bh)................................................................................ 71
8.2.23. Gamma Control (R30h ~ R3Dh).......................................................................................... 72
8.2.24. Horizontal and Vertical RAM Address Position (R50h, R51h, R52h, R53h) ....................... 72
8.2.25. Gate Scan Control (R60h, R61h, R6Ah) ............................................................................. 73
8.2.26. Partial Image 1 Display Position (R80h).............................................................................. 76
8.2.27. Partial Image 1 RAM Start/End Address (R81h, R82h)....................................................... 76
8.2.28. Partial Image 2 Display Position (R83h).............................................................................. 76
8.2.29. Partial Image 2 RAM Start/End Address (R84h, R85h)....................................................... 76
8.2.30. Panel Interface Control 1 (R90h)......................................................................................... 77
8.2.31. Panel Interface Control 2 (R92h)......................................................................................... 77
8.2.32. Panel Interface Control 4 (R95h)......................................................................................... 77
8.2.33. OTP VCM Programming Control (RA1h) ............................................................................ 78
8.2.34. OTP VCM Status and Enable (RA2h) ................................................................................. 78
8.2.35. OTP Programming ID Key (RA5h) ...................................................................................... 79
9. OTP Programming Flow.............................................................................................................................. 80
10. GRAM Address Map & Read/Write............................................................................................................. 83
11. Window Address Function........................................................................................................................... 89
12. Gamma Correction...................................................................................................................................... 91
13. Application................................................................................................................................................... 96
13.1. Configuration of Power Supply Circuit ........................................................................................... 96
13.2. Display ON/OFF Sequence ........................................................................................................... 98
13.3. Standby and Sleep Mode............................................................................................................... 99
13.4. Power Supply Configuration ........................................................................................................ 100
13.5. Voltage Generation ...................................................................................................................... 101
13.6. Applied Voltage to the TFT panel................................................................................................. 102
13.7. Partial Display Function ............................................................................................................... 102
13.8. Resizing Function......................................................................................................................... 103
14. Electrical Characteristics........................................................................................................................... 106
14.1. Absolute Maximum Ratings ......................................................................................................... 106
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 111
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240RGBx320 Resolution and 262K color
ILI9325
14.2. DC Characteristics ....................................................................................................................... 107
14.3. Reset Timing Characteristics ....................................................................................................... 107
14.4. AC Characteristics ....................................................................................................................... 107
14.4.1. i80-System Interface Timing Characteristics..................................................................... 107
14.4.2. Serial Data Transfer Interface Timing Characteristics....................................................... 108
14.4.3. RGB Interface Timing Characteristics ............................................................................... 109
15. Revision History .........................................................................................................................................111
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 111
Version: 0.35
a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
Figures
FIGURE1 SYSTEM INTERFACE AND RGB INTERFACE CONNECTION.................................................................................... 25
FIGURE2 18-BIT SYSTEM INTERFACE DATA FORMAT ......................................................................................................... 26
FIGURE3 16-BIT SYSTEM INTERFACE DATA FORMAT ......................................................................................................... 27
FIGURE4 9-BIT SYSTEM INTERFACE DATA FORMAT ........................................................................................................... 28
FIGURE5 8-BIT SYSTEM INTERFACE DATA FORMAT ........................................................................................................... 29
FIGURE6 DATA TRANSFER SYNCHRONIZATION IN 8/9-BIT SYSTEM INTERFACE.................................................................. 29
FIGURE 7 DATA FORMAT OF SPI INTERFACE..................................................................................................................... 31
FIGURE8 DATA TRANSMISSION THROUGH SERIAL PERIPHERAL INTERFACE (SPI) ............................................................... 32
FIGURE9 DATA TRANSMISSION THROUGH SERIAL PERIPHERAL INTERFACE (SPI), TRI=”1” AND DFM=”10”).................... 33
FIGURE10 DATA TRANSMISSION THROUGH VSYNC INTERFACE)....................................................................................... 34
FIGURE11 MOVING PICTURE DATA TRANSMISSION THROUGH VSYNC INTERFACE ............................................................ 34
FIGURE12 OPERATION THROUGH VSYNC INTERFACE ...................................................................................................... 35
FIGURE13 TRANSITION FLOW BETWEEN VSYNC AND INTERNAL CLOCK OPERATION MODES ............................................ 37
FIGURE14 RGB INTERFACE DATA FORMAT ...................................................................................................................... 38
FIGURE15 GRAM ACCESS AREA BY RGB INTERFACE ..................................................................................................... 39
FIGURE16 TIMING CHART OF SIGNALS IN 18-/16-BIT RGB INTERFACE MODE.................................................................. 40
FIGURE17 TIMING CHART OF SIGNALS IN 6-BIT RGB INTERFACE MODE ............................................................................ 41
FIGURE18 EXAMPLE OF UPDATE THE STILL AND MOVING PICTURE.................................................................................... 42
FIGURE19 INTERNAL CLOCK OPERATION/RGB INTERFACE MODE SWITCHING ................................................................... 45
FIGURE20 GRAM ACCESS BETWEEN SYSTEM INTERFACE AND RGB INTERFACE .............................................................. 46
FIGURE21 RELATIONSHIP BETWEEN RGB I/F SIGNALS AND LCD DRIVING SIGNALS FOR PANEL ..................................... 47
FIGURE22 REGISTER SETTING WITH SERIAL PERIPHERAL INTERFACE (SPI)...................................................................... 48
FIGURE23 REGISTER SETTING WITH I80 SYSTEM INTERFACE ............................................................................................ 49
FIGURE 24 REGISTER READ/WRITE TIMING OF I80 SYSTEM INTERFACE ........................................................................... 50
FIGURE25 GRAM ACCESS DIRECTION SETTING ............................................................................................................... 56
FIGURE26 GRAM HIGH-SPEED WRITE MODE................................................................................................................... 57
FIGURE27 HIGH-SPEED CONSECUTIVE WRITE OPERATION (IN 18/16-BIT INTERFACE MODE).............................................. 57
FIGURE28 16-BIT MPU SYSTEM INTERFACE DATA FORMAT............................................................................................. 58
FIGURE29 8-BIT MPU SYSTEM INTERFACE DATA FORMAT............................................................................................... 58
FIGURE 30 DATA READ FROM GRAM THROUGH READ DATA REGISTER IN 18-/16-/9-/8-BIT INTERFACE MODE.............. 69
FIGURE 31 GRAM DATA READ BACK FLOW CHART ........................................................................................................ 70
FIGURE 32 GRAM ACCESS RANGE CONFIGURATION ........................................................................................................ 73
FIGURE33 GRAM READ/WRITE TIMING OF I80-SYSTEM INTERFACE ............................................................................... 83
FIGURE34 I80-SYSTEM INTERFACE WITH 18-/16-/9-BIT DATA BUS (SS=”0”, BGR=”0”) ................................................. 85
FIGURE35 I80-SYSTEM INTERFACE WITH 8-BIT DATA BUS (SS=”0”, BGR=”0”) .............................................................. 86
FIGURE 36 I80-SYSTEM INTERFACE WITH 18-/9-BIT DATA BUS (SS=”1”, BGR=”1”) ....................................................... 88
FIGURE 37 GRAM ACCESS WINDOW MAP ....................................................................................................................... 89
FIGURE 38 GRAYSCALE VOLTAGE GENERATION............................................................................................................... 91
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 111
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a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
FIGURE 39 GRAYSCALE VOLTAGE ADJUSTMENT .............................................................................................................. 92
FIGURE 40 GAMMA CURVE ADJUSTMENT ......................................................................................................................... 93
FIGURE 41 RELATIONSHIP BETWEEN SOURCE OUTPUT AND VCOM ................................................................................. 95
FIGURE 42 RELATIONSHIP BETWEEN GRAM DATA AND OUTPUT LEVEL.......................................................................... 95
FIGURE 43 POWER SUPPLY CIRCUIT BLOCK...................................................................................................................... 96
FIGURE 44 DISPLAY ON/OFF REGISTER SETTING SEQUENCE ............................................................................................ 98
FIGURE 45 STANDBY/SLEEP MODE REGISTER SETTING SEQUENCE................................................................................... 99
FIGURE 46 POWER SUPPLY ON/OFF SEQUENCE ............................................................................................................. 100
FIGURE 47 VOLTAGE CONFIGURATION DIAGRAM........................................................................................................... 101
FIGURE 48 VOLTAGE OUTPUT TO TFT LCD PANEL ........................................................................................................ 102
FIGURE 49 PARTIAL DISPLAY EXAMPLE.......................................................................................................................... 103
FIGURE 50 DATA TRANSFER IN RESIZING......................................................................................................................... 104
FIGURE 51 RESIZING EXAMPLE ....................................................................................................................................... 104
FIGURE 52 I80-SYSTEM BUS TIMING............................................................................................................................... 108
FIGURE 53 SPI SYSTEM BUS TIMING............................................................................................................................... 109
FIGURE54 RGB INTERFACE TIMING................................................................................................................................ 110
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 6 of 111
Version: 0.35
a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
1. Introduction
ILI9325 is a 262,144-color one-chip SoC driver for a-TFT liquid crystal display with resolution of 240RGBx320
dots, comprising a 720-channel source driver, a 320-channel gate driver, 172,800 bytes RAM for graphic data
of 240RGBx320 dots, and power supply circuit.
ILI9325 has four kinds of system interfaces which are i80-system MPU interface (8-/9-/16-/18-bit bus width),
VSYNC interface (system interface + VSYNC, internal clock, DB[17:0]), serial data transfer interface (SPI)
and RGB 6-/16-/18-bit interface (DOTCLK, VSYNC, HSYNC, ENABLE, DB[17:0]).
In RGB interface and VSYNC interface mode, the combined use of high-speed RAM write function and widow
address function enables to display a moving picture at a position specified by a user and still pictures in other
areas on the screen simultaneously, which makes it possible to transfer display the refresh data only to
minimize data transfers and power consumption.
ILI9325 can operate with 1.65V I/O interface voltage, and an incorporated voltage follower circuit to generate
voltage levels for driving an LCD. The ILI9325 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 ILI9325 an ideal LCD driver for
medium or small size portable products such as digital cellular phones, smart phone, PDA and PMP where
long battery life is a major concern.
2. Features
Single chip solution for a liquid crystal QVGA TFT LCD display
240RGBx320-dot resolution capable with real 262,144 display color
Support MVA (Multi-domain Vertical Alignment) wide view display
Incorporate 720-channel source driver and 320-channel gate driver
Internal 172,800 bytes graphic RAM
High-speed RAM burst write function
System interfaces
i80 system interface with 8-/ 9-/16-/18-bit bus width
Serial Peripheral Interface (SPI)
RGB interface with 6-/16-/18-bit bus width (VSYNC, HSYNC, DOTCLK, ENABLE, DB[17:0])
VSYNC interface (System interface + VSYNC)
Internal oscillator and hardware reset
Resizing function (×1/2, ×1/4)
Reversible source/gate driver shift direction
Window address function to specify a rectangular area for internal GRAM access
Bit operation function for facilitating graphics data processing
Bit-unit write data mask function
Pixel-unit logical/conditional write function
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 7 of 111
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a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9325
Abundant functions for color display control
γ-correction function enabling display in 262,144 colors
Line-unit vertical scrolling function
Partial drive function, enabling partially driving an LCD panel at positions specified by user
Incorporate step-up circuits for stepping up a liquid crystal drive voltage level up to 6 times (x6)
Power saving functions
8-color mode
standby mode
sleep mode
Low -power consumption architecture
Low operating power supplies:
IOVcc = 1.65V ~ 3.3 V (interface I/O)
Vci = 2.5V ~ 3.3 V (analog)
LCD Voltage drive:
Source/VCOM power supply voltage
DVDH - GND = 4.5V ~ 6.0
VCL – GND = -2.0V ~ -3.0V
VCI – VCL ≦ 6.0V
Gate driver output voltage
VGH - GND = 10V ~ 20V
VGL – GND = -5V ~ -15V
VGH – VGL ≦ 32V
VCOM driver output voltage
VCOMH = 3.0V ~ (DDVDH-0.5)V
VCOML = (VCL+0.5)V ~ 0V
VCOMH-VCOML ≦ 6.0V
a-TFT LCD storage capacitor: Cst only
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 8 of 111
Version: 0.35
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