Spi Interfaces; Adc Interfaces - Quectel QuecOpen BG952A-GL Hardware Design

Figure 19: Reference Design of I2C Interface with an External I2C Interface Sensor
3.15. SPI Interfaces*
The module provides three SPI interfaces. 2 SPI interfaces for master mode, 1 SPI interface for slave
mode. The SPI interfaces function is multiplexed from GPIOs.
SPIM0 and SPIM1 interfaces in master mode up to 25 MHz.

SPIS interface supports slave mode only, up to 25 MHz.

NOTE
The power domain of the SPI interface is 1.8 V. A voltage-level translator should be used between the
module and the host if your application is equipped with a 3.3 V processor or device interface.
3.16. ADC Interfaces*
The module provides two analog-to-digital converter (ADC) interfaces by default. The other two ADC
interfaces can be multiplexed from GPIOs.
To improve the accuracy of ADC voltage values, the traces of ADC should be surrounded with ground.
Table 17: Pin Definition of ADC Interfaces
Pin Name Pin No.
BG952A-GL_QuecOpen_Hardware_Design
I/O Description
LPWA Module Series
Comment
42 / 72