Touch Panel Interface - Quectel SG560D Series Hardware Design

Module
Figure 21: LCM External Backlight Driver Reference Circuit

4.12. Touch Panel Interface

The module provides one group of I2C interface for connection with Touch Panel (TP), and provides the
corresponding power supply and interrupt pins for TP. The pin definition of touch panel interface is given
below.
Table 27: Pin Definition of Touch Panel Interface
Pin Name
TP_RST
TP_INT
TP_I2C_SCL
TP_I2C_SDA
SG560D_Series_Hardware_Design
VPH_PWR
PWM1
R1
10K
2.2 μF
GND
Pin No. I/O
324 DO
321 DI
328 OD
325 OD
Backlight
Driver
C1
Description
TP reset
TP interrupt
TP I2C clock
TP I2C data
Smart Module Series
LCM_LED+
LCM_LED-
Comment
1.8 V power domain.
External 1.8 V pull-up is
required.
If not used, keep them
unconnected.
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