I2C Interface; Pwm Interfaces - Quectel FGM842D Hardware Design

3.4.3. I2C Interface

In the case of multiplexing, the module provides 1 I2C interface which supports the master and slave
modes. The interface supports standard (up to 100 kbps) and fast (up to 400 kbps) modes with 7-bit
addressing. If low level on SCL or bus idle duration is greater than the software-defined threshold, it will
generate an interrupt to the MCU.
Table 9: Pin Definition of I2C Interface
Pin Name Pin No.
GPIO17 18
GPIO15 16
GPIO24 13
GPIO26 12
NOTE
Reserve 1–10 kΩ pull-up resistors to VBAT when I2C interface is connected to an external equipment.

3.4.4. PWM Interfaces

In the case of multiplexing, the module supports up to 6 32-bit PWM interfaces.
Table 10: Pin Definition of PWM Interfaces
Pin Name Pin No.
GPIO6 33
GPIO7 34
GPIO8 32
GPIO9 35
GPIO24 13
GPIO26 12
FGM842D_Hardware_Design
Alternate Function
I2C_SDA
I2C_SCL
I2C_SDA
I2C_SCL
Alternate Function
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
Wi-Fi&Bluetooth Module Series
I/O Description
DIO I2C serial data
DO I2C serial clock
DIO I2C serial data
DO I2C serial clock
I/O Description
DO PWM0 out
DO PWM1 out
DO PWM2 out
DO PWM3 out
DO PWM4 out
DO PWM5 out
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