4.1 Pin Description
Pin # |
Pin Description |
I/O Type |
Function (Default) |
Programmable Pull-Up/Down Resistor |
---|---|---|---|---|
1 | GND | N/A | Common ground | — |
2 | UART_TxD | ATWINC1500 output | Currently used only for Microchip debug. Not for customer use. Leave unconnected. | Yes – pull-up |
3 | UART_RxD | ATWINC1500 input | Currently used only for Microchip debug. Not for customer use. Leave unconnected. | Yes – pull-up |
4 | Wi-Fi Chip_En | ATWINC1500 input | Currently used only for Microchip debug. Not for customer use. Leave unconnected. | No |
5 | Wi-Fi GPIO_1/RTC | ATWINC1500 I/O | ATWINC1500 General purpose I/O. Can also be used to input a 32.768 KHz Real Time Clock for accurate timing of Wi-Fi sleep intervals | Yes – pull-up |
6 | Wi-Fi GPIO_3 | — | ATWINC1500 General purpose I/O | Yes – pull-up |
7 | VBAT | Power | Supply for Wi-Fi RF Power Amplifier and Internal 1.3V Switching Regulator | — |
8 | PA16 | Yes | ||
9 |
PA17 |
Yes | ||
10 | GND | Power | Ground | — |
11 | PA18 | Yes | ||
12 | PA19 | Yes | ||
13 | PA20 | Yes | ||
14 | PA21 | Yes | ||
15 | PA22 | Yes | ||
16 | PA23 | Yes | ||
17 | GND | Power | Ground | — |
18 | PA24/USB_DM | Host Interface USB Data minus pin | Yes | |
19 | PA25/USB_DP | Host Interface USB Data Plus pin | Yes | |
20 | GND | Power | Ground | — |
21 | VCC | Power | Power supply for I/O | — |
22 | PB22 | Yes | ||
23 | PB23 | Yes | ||
24 | RESET_N | Input | System Reset. Low level on this pin resets the entire module. | Yes |
25 | PA30/SWCLK | Cortex Serial Wire Debug Interface CLK | Yes | |
26 | PA31/SWDIO | Cortex Serial Wire Debug Interface Data I/O | Yes | |
27 | PB02 | Yes | ||
28 | PB03 | Yes | ||
29 | PA00/GPIO/XIN32 | Yes | ||
30 | PA01/GPIO/XOUT32 | Yes | ||
31 | PA02 | I/O | Yes | |
32 | GND | Power | Ground | Yes |
33 | PA03 | Yes | ||
34 | PA04 | Yes | ||
35 | PA05 | Yes | ||
36 | PA06 | Yes | ||
37 | PA07 | Yes | ||
38 | PA08 | Yes | ||
39 | PA09 | Yes | ||
40 | PA10 | Yes | ||
41 | PA11 | Yes | ||
42 | GND | Power | Ground | — |
43 | PB10 | Yes | ||
44 | PB11 | Yes | ||
45 | Wi-Fi GPIO_4 | ATWINC1500 I/O | ATWINC1500 General purpose I/O | Yes – pull-up |
46 | Wi-Fi GPIO_5 | ATWINC1500 I/O | ATWINC1500 General purpose I/O | Yes – pull-up |
47 | Wi-Fi GPIO_6 | ATWINC1500 I/O | ATWINC1500 General purpose I/O | Yes – pull-up |
48 | Wi-Fi I2C_SCL | ATWINC1500 I/O | Currently used only for Microchip debug. Not for customer use. Leave unconnected. | Yes – pull-up |
49 | Wi-Fi I2C_SDA | ATWINC1500 I/O | Currently used only for Microchip debug. Not for customer use. Leave unconnected. | Yes – pull-up |
50 | Wi-Fi Reset_n | ATWINC1500 Input | Currently used only for Microchip debug. Not for customer use. Leave unconnected. | No |
51 | GND | Power | Ground | — |