3 Pinout and Package Information

This package contains an exposed paddle that must be connected to the system board ground. The ATWILC3000-MR110xA module pin assignment is shown in following figure.
Figure 3-1. ATWILC3000-MR110xA Module Pin Assignment

The following table provides the ATWILC3000-MR110xA module pin description.

Table 3-1. ATWILC3000-MR110xA Module Pin Description
Pin #Pin NamePin TypeDescription
1GNDGNDGround
2SDIO/SPI CFGDigital InputConnect to VDDIO through a 1 MΩ resistor to enable SPI interface. Connect to GND to enable SDIO interface
3NC—No connection
4NC—No connection
5NC—No connection
6NC—No connection
7RESETNDigital InputActive-low hard Reset. When this pin is asserted low, the module is placed in the Reset state. When this pin is asserted high, the module is out of Reset and functions normally. Connect to a host output that defaults low on power-up. If the host output is tri-stated, add a 1 MΩ pull down resistor to ensure a low level at power-up
8BT_TXDDigital I/O, Programmable pull upBluetooth UART transmits data output. Connect to UART_RXD of host
9BT_RXDDigital I/O, Programmable pull upBluetooth UART receives data input. Connect to UART_TXD of host
10BT_RTS/I2C_SDA_SDigital I/O, Programmable pull up

I2C Client data. Used only for debug development purposes. It is recommended to add a test point for this pin. I2C will be the default configuration. If flow control is enabled, this pin will be configured as UART RTS

11BT_CTS/I2C_SCL_SDigital I/O, Programmable pull upI2C Client clock. Used only for debug development purposes. It is recommended to add a test point for this pin. I2C will be the default configuration. If flow control is enabled, this pin will be configured as UART CTS
12VDDIOPowerDigital I/O power supply
13GNDGNDGround
14GPIO3Digital I/O, Programmable pull upGPIO_3(1)
15GPIO4Digital I/O, Programmable pull upGPIO_4(1)
16UART_TXDDigital I/O, Programmable pull upWi-Fi® UART TxD output. Used only for debug development purposes. It is recommended to add a test point for this pin
17UART_RXDDigital I/O, Programmable pull upWi-Fi UART RxD input. Used only for debug development purposes. It is recommended to add a test point for this pin
18VBATPowerPower supply pin for DC/DC converter and PA
19CHIP_ENDigital InputPMU enable. High level enables the module and the low level places the module in Power- Down mode. Connect to a host output that defaults low at power-up. If the host output is tri-stated, add a 1 MΩ pull down resistor if necessary to ensure a low level at power-up
20RTC_CLKDigital I/O, Programmable pull upRTC Clock input. Connect to a 32.768 kHz clock source
21GNDGNDGround
22SD_CLK/GPIO8Digital I/O, Programmable pull upSDIO clock line from the ATWILC3000-MR110xA, when the module is configured for SDIO
23SD_CMD/SPI_SCKDigital I/O, Programmable pull upSDIO CMD line from ATWILC3000-MR110xA, when the module is configured for SDIO. SPI clock from ATWILC3000-MR110xA, when the module is configured for SPI
24SD_DAT0/SPI_MISODigital I/O, Programmable pull upSDIO Data Line 0 from the ATWILC3000-MR110xA, when the module is configured for SDIO. SPI MISO (Host In Client Out) pin from the ATWILC3000-MR110xA, when the module is configured for SPI
25SD_DAT1/SPI_SSNDigital I/O, Programmable pull upSDIO Data Line 1 from the ATWILC3000-MR110xA, when the module is configured for SDIO. Active-low SPI SSN (Client Select) pin from the ATWILC3000-MR110xA, when the module is configured for SPI
26SD_DAT2/SPI_MOSIDigital I/O, Programmable pull upSDIO Data Line 2 from the ATWILC3000-MR110xA, when the module is configured for SDIO. SPI MOSI (Host Out Client In) pin from the ATWILC3000-MR110xA, when the module is configured for SPI
27SD_DAT3/GPIO7Digital I/O, Programmable pull upSDIO Data Line 3 from the ATWILC3000-MR110xA, when the module is configured for SDIO
28GNDGNDGround
29GPIO17Digital I/O, Programmable pull upGPIO_17(1)
30GPIO18Digital I/O, Programmable pull upGPIO_18(1)
31GPIO19Digital I/O, Programmable pull upGPIO_19(1)
32GPIO20Digital I/O, Programmable pull upGPIO_20(1)
33IRQNDigital output, Programmable pull upATWILC3000-MR110xA module interrupt output. Connect to a host interrupt pin
34GPIO 21Digital I/O, Programmable pull upGPIO_21(1)
35GPIO 0Digital I/O, Programmable pull upGPIO_0(1)
36GNDGNDGround
37PADDLE VSSPowerConnect to the system board ground
Note:
  1. Usage of the GPIO functionality is not supported by the firmware. The data sheet will be updated once the support for this feature is added.