参数资料
型号: LST4046QOTD
厂商: LITE-ON SEMICONDUCTOR CORP
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, QCC16
封装: 4 X 4 MM, QFN-16
文件页数: 4/8页
文件大小: 194K
代理商: LST4046QOTD
Liteon Semiconductor Corporation
LST4046
R-type Touch Screen Controller
Rev1.0
4/8
Pen Interrupt
The LST4046 provides a touch detection function as shown in figure 2. When LST4046 is in power down mode, Y-
switch turn ON to connect Y- to GND and the PENIRQ output is connected to X+ input. The X+ will be pulled to GND
when screen is touched.
Y+
Y-
X+
PENIRQ
AVDD
Rpull
Pen interrupt
enable
H
Figure 2: Internal circuit of pen interrupt.
PIN ASSIGNMENT AND PACKAGE
Pin no.
TSSOP-16
QFN4*4-16
Symbol
Descriptions
1
5
AVDD
Analog power supply
2
6
X+
X+ position input
3
7
Y+
Y+ position input
4
8
X-
X- position input
5
9
Y-
Y- position input
6
10
GND
Ground
7
11
AUX1
Analog input 1
8
12
AUX2
Analog input 2
9
13
VREF
Reference voltage input/output
10
14
DVDD
Digital power supply
11
15
/PENIRQ
Pen interrupt, open drain output
12
16
DOUT
Serial data output
13
1
BUSY
Busy output
14
2
DIN
Serial data input
15
3
/CS
Chip select
16
4
DCLK
Digital clock
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