User Manual

MeiG_SLM550_Hardware Design Manual

MeiG Smart Technology Co., Ltd 52/89

Important note: When designing the camera function, you need to pay attention to the position of the

connector. There will be a small person in the specification of the camera to indicate the imaging

direction. You need to ensure that the villain is standing on the long side of the LCD, otherwise the

camera will be flipped. The software cannot be adjusted at 90°. As shown in the two figures below.

Figure 27 Camera imaging diagram

4.7 Capacitive Touch Interface

The module provides a set of I2C interfaces that can be used to connect capacitive touches while

providing the required power and interrupt pins. The default interface pins for capacitive touch software

are defined as follows:

Table 10 Capacitive Touch Interface Definitions

Name Pin Input/Output Description

GPIO6_TP_I2C3_SDA 48 I/O

The capacitive touch I2C

interface needs to be pulled up

toVREG_L5_1P8

GPIO7_TP_I2C3_SCL 47 I/O

GPIO80_TP_INT_N 30 I TP Interrupt

GPIO71_TP_RESET_N 31 O TP Reset

VREG_L6_1P8 125 O 1.8V Power supply to TP I/O

VREG_L17_2P8 156 O 2.8V Power supply to TP VDD

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