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ILI9325 参数 Datasheet PDF下载

ILI9325图片预览
型号: ILI9325
PDF下载: 下载PDF文件 查看货源
内容描述: 的a-Si TFT LCD单芯片驱动器240RGBx320分辨率和26万色 [a-Si TFT LCD Single Chip Driver 240RGBx320 Resolution and 262K color]
分类和应用: 驱动器
文件页数/大小: 111 页 / 1190 K
品牌: ETC [ ETC ]
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a-Si TFT LCD Single Chip Driver  
240RGBx320 Resolution and 262K color  
ILI9325  
Ladder resistors and 8-to-1 selector Block configuration  
The reference voltage generating block consists of two ladder resistor units including variable resistors and  
8-to-1 selectors. Each 8-to-1 selector selects one of the 8 voltage levels generated from the ladder resistor  
unit to output as a grayscale reference voltage. Both variable resistors and 8-to-1 selectors are controlled  
according to the γ-correction registers. This unit has pins to connect a volume resistor externally to  
compensate differences in various characteristics of panels.  
Variable resistors  
ILI9325 uses variable resistors of the following three purposes: gradient adjustment (VRCP(N)0/VRCP(N)1);  
amplitude adjustment (1) (VROP(N)0); and the amplitude adjustment (2) (VROP(N)1). The resistance values  
of these variable resistors are set by gradient adjustment registers and amplitude adjustment registers as  
follows.  
Gradient adjustment  
Amplitude adjustment (1)  
VRP(N)0[3:0] VROP(N)0  
Amplitude adjustment (2)  
VRP(N)1[4:0] VROP(N)1  
PRP(N)0/1[2:0] VRCP(N)0  
Register  
000  
Resistance  
0R  
Register  
0000  
0001  
0010  
:
Resistance  
Register  
00000  
00001  
00010  
:
Resistance  
0R  
2R  
4R  
:
0R  
1R  
2R  
:
001  
4R  
010  
8R  
011  
12R  
100  
16R  
:
:
:
:
101  
20R  
1101  
1111  
1111  
26R  
28R  
30R  
11101  
11110  
11111  
29R  
30R  
31R  
110  
24R  
111  
28R  
8-to-1 selectors  
The 8-to-1 selector selects one of eight voltage levels generated from the ladder resistor unit according to the  
fine adjustment register and output the selected voltage level as a reference grayscale voltage (VgP(N)1~6).  
The table below shows the setting in the fine adjustment register and the selected voltage levels for  
respective reference grayscale voltages.  
Fine adjustment registers and selected voltage  
Register  
Selected Voltage  
KP(N)[2:0] VgP(N)1 VgP(N)8 VgP(N)20 VgP(N)43 VgP(N)55 VgP(N)62  
000  
001  
010  
011  
100  
101  
110  
111  
VP(N)1  
VP(N)2  
VP(N)3  
VP(N)4  
VP(N)5  
VP(N)6  
VP(N)7  
VP(N)8  
VP(N)9  
VP(N)10  
VP(N)11  
VP(N)12  
VP(N)13  
VP(N)14  
VP(N)15  
VP(N)16  
VP(N)17  
VP(N)18  
VP(N)19  
VP(N)20  
VP(N)21  
VP(N)22  
VP(N)23  
VP(N)24  
VP(N)25  
VP(N)26  
VP(N)27  
VP(N)28  
VP(N)29  
VP(N)30  
VP(N)31  
VP(N)32  
VP(N)33  
VP(N)34  
VP(N)35  
VP(N)36  
VP(N)37  
VP(N)38  
VP(N)39  
VP(N)40  
VP(N)41  
VP(N)42  
VP(N)43  
VP(N)44  
VP(N)45  
VP(N)46  
VP(N)47  
VP(N)48  
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 94 of 111  
Version: 0.35  
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