User's Manual

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4. Module Interfaces
4.1 PIN Layout
WT1SBSL has one group of pins2X7. The layout of PINs are shown in the figure below.
Figure6. WT1SBSL pin-out
4.2 PIN Definitions
PIN Assignment
PIN PINNAME NOTE
Pin1 GND
Pin2 VCC 3.3V
Pin3 RST_N Module software reset,Available
atlowlevel
Pin4 UART_TX UARTOnly
forPassthrough
Pin5 UART_RX
Pin6 GPIO3
Pin7 GPIO4 Feedwatchdog
Pin8 GPIO4 Feedwatchdog
Pin9 GPIO3
Pin10 GPIO2