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
¾ i80 system interface with 8-/ 9-/16-/18-bit bus width
¾ Serial Peripheral Interface (SPI)
¾ RGB interface with 6-/16-/18-bit bus width (VSYNC, HSYNC, DOTCLK, ENABLE, DB[17:0])
¾ 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
¾ Bit-unit write data mask function
¾ 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.
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Version: 0.35
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