Specifications

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VDD_IO
VDD_IO
WT32i
Figure 16: Self powered WT32i device configuration
8.3 Programming and Debug Interface (SPI)
The synchronous serial port interface (SPI) is for interfacing with other digital devices. The SPI port can be
used for system debugging. It can also be used for programming the Flash memory. SPI interface is
connected by using the MOSI, MISO, CSB and CLK pins.
SPI interface can not be used for any application purposes.