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3. TECHNICAL BRIEF
3.10 LCD Interface
3.10 LCD Interface
FL401
ICVE10184E150R101FR
1
LCD_WR
INOUT_A1
INOUT_B1
2
LCD_RS
INOUT_A2
INOUT_B2
3
LCD_CS
INOUT_A3
INOUT_B3
4
INOUT_A4
INOUT_B4
FL402
ICVE10184E150R101FR
1
LCD_DATA07
INOUT_A1
INOUT_B1
2
LCD_DATA05
INOUT_A2
INOUT_B2
3
LCD_DATA03
INOUT_A3
INOUT_B3
4
LCD_DATA01
INOUT_A4
INOUT_B4
FL400
1
LCD_DATA06
INOUT_A1
2
LCD_DATA04
INOUT_A2
3
LCD_DATA02
INOUT_A3
4
LCD_DATA00
INOUT_A4
ILI9225 is a 262,144-color one-chip SoC driver for a-TFT liquid crystal display with resolution of
176RGBx220 dots, comprising a 528-channel source driver, a 220-channel gate driver, 87120 bytes RAM
for graphic data of 176RGBx220 dots, and power supply circuit.
ILI9225 can operate with low I/O interface power supply up to 1.65V, with an incorporated voltage
follower circuit to generate voltage levels for driving an LCD.
The ILI9225 also supports a function to display in 8 colors and a standby mode, allowing for precise
power control by software. These features make the ILI9225 an ideal LCD driver for medium or small size
portable products such as digital cellular phones or small PDA, where long battery life is a major concern.
LGE Internal Use Only
9
8
7
6
LCD_VSYNC
15pF
9
8
7
6
15pF
ICVE10184E150R101FR
9
INOUT_B1
8
INOUT_B2
7
INOUT_B3
6
TP401
INOUT_B4
15pF
Figure 3.10.1 LCD Interface
VIO
R401
R406
100K
100K
LED_CA1
LED_CA2
LED_CA3
TP400
R403
LCD_ID
100K
GP : LOW
LGIT : HIGH
- 44 -
Copyright © 2010 LG Electronics. Inc. All right reserved.
3. TECHNICAL BRIEF
VBAT
35
34
C423
33
2.2u
32
31
30
R405
29
100K
28
27
26
25
LCD_RESET
24
23
22
D401
21
20
DNI
19
18
17
16
15
14
13
12
11
10
9
VIO
VIO
8
7
6
5
4
3
2
C402
C401
1
1u
CN401
1u
Only for training and service purposes
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