|  |  | TOPview |  |  | 
| GND | RST |  | TXD | GND | 
| NC | SVP |  | RXD | IO27 | 
| SVN | IO26 |  | IO22 | IO25 | 
| IO35 | IO18 |  | IO21 | IO32 | 
| IO33 | IO19 |  | IO17 | TDI | 
| IO34 | IO23 |  | IO16 | IO4 | 
| TMS | IO5 |  | GND | IO0 | 
| NC | 3v3 |  | VCC | IO2 | 
| SD2 | TCK |  | TD0 | SD1 | 
| CMD | SD3 | USB_CNT | SD0 | CLK | 
con1
|  |  |  | 
| GND |  |  | 
| NC | 
| SVN | GPIO39 | adc1_3 | 
| IO35 | GPIO35 | adc1_7 | 
| IO33 | GPIO33 | adc1_5 | Touch8 | 
| IO34 | GPIO34 | adc1_6 | 
| TMS | GPIO14 | adc2_6 | Touch6 | 
| NC | 
| SD2 | GPIO9 | 
| CMD | GPIO11 | 
con2
|  |  |  | 
| RST |  | 
| SVP | GPIO36 | adc1_0 | 
| IO26 | GPIO26 | adc2_9 | DAC_2 | 
| IO18 | GPIO18 |  | spiSCK | 
| IO19 | GPIO19 |  | spiMISO | 
| IO23 | GPIO23 |  | spi_MOSI | 
| IO5 | GPIO5 |  | spi_SS | 
| 3V3 |  | 
| TCK | GPIO13 | adc1_0 | Touch4 | 
| SD3 | GPIO10 | 
con3
|  |  |  | 
| TXD | GPIO1 | 
| RXD | GPIO3 | 
| IO22 | GPIO22 |  | WireSCL | 
| IO21 | GPIO21 |  | WireSDA | 
| IO17 | GPIO17 | 
| IO16 | GPIO16 | 
| GND | 
| VCC | 
| TDO | GPIO15 | adc2_3 | Touch3 | 
| SD0 | GPIO7 | 
con4
|  |  |  | 
| GND |  | 
| IO27 | GPIO17 | adc2_7 | Touch7 | 
| IO25 | GPIO25 | adc2_8 | DAC_1 | 
| IO32 | GPIO32 | adc1_4 | Touch9 | 
| TDI | GPIO12 | adc2_5 | Touch5 | 
| IO4 | GPIO4 | adc2_0 | Touch0 | 
| IO0 | GPIO0 | adc2_1 | Touch1 | 
| IO2 | GPIO2 | adc2_2 | Touch2 | 
| SD1 | GPIO8 |  | 
| CLK | GPIO6 |  |