2.1 Pin Details of RNWF02 Module

This section provides details on pin diagrams and pinout table of RNWF02 module.

Figure 2-2. RNWF02 Module Pin Diagram

Table 2-1. **RNWF02 Module Pinout Table**
Pin Number	Pin Name	Pin Type	Pin Description
1	NC	—	No connection
2	I2C_SCL⁽⁴⁾	I	I²C clock connected to Trust&GO device. Recommended to connect external pull-up resistor of 1.2K for RNWF02PC and RNWF02UC devices
3	I2C_SDA⁽⁴⁾	I/O	I²C data connected to Trust&GO device. Recommended to connect external pull-up resistor of 1.2K for RNWF02PC and RNWF02UC devices
4	MCLR	I	Master clear Reset, active-low
5	PTA_WLAN_ACTIVE	O	PTA interface, WLAN Active indication output to Bluetooth® Coexistence device
6	PTA_BT_PRIO	I	PTA interface, Bluetooth Coexistence device priority indication input to RNWF02
7	Reserved	I/O	Reserved pin Do not connect
8	NC	—	No connection
9	GND	P	Ground
10	DFU_RX/Strap1	I/O	Device firmware update, receive signal Host interface configuration, Strapping1 pin. For more details on the exact configuration, refer to Table 2-2.
11	Reserved⁽⁵⁾	I/O	Reserved pin Connect to an I/O pin (tri-stated) of a host device or connect to an external switch for future use.
12	GND	P	Ground
13	INTOUT	O	Interrupt request (Active low) from the Wi-Fi® module
14	UART1_TX⁽²⁾	O	UART1 transmit, Host interface. Default: 230,400 baud 8N1 No flow control
15	UART1_RTSn	O	UART1 Request-to-Send (active low), Host interface
16	UART1_CTSn	I	UART1 Clear-to-Send (active-low), Host interface
17	Reserved	I/O	Reserved pin Do not connect.
18	Reserved	I/O	Reserved pin Do not connect.
19	UART1_RX⁽²⁾	I	UART1 receive, Host interface. Default: 230,400 baud 8N1 No flow control
20	VDD	P	VDD power supply (3.0-3.6V)
21	RTCC_OSC_IN/PTA_BT_ACTIVE ⁽¹⁾	I	32.768 KHz RTCC Oscillator input PTA interface, Bluetooth Coexistence device active indication input to RNWF02
22	RTCC_OSC_OUT	O	32.768 KHz RTCC Oscillator output
23	VDDIO	P	I/O power supply (1.8-3.6V)
24	TP	P	Test point: 1.5V⁽³⁾
25	NC	—	No connection
26	DFU_TX/Strap2	I/O	Device Firmware Update, transmit signal Host interface configuration, Strapping2 pin. For more details on the exact configuration, refer to Table 2-2.
27	UART2_TX⁽²⁾	O	UART2 transmit signal for the debug log Default: 460,800 baud 8N1 No flow control
28	GND	P	Ground
29	GND Paddle	P	Thermal ground pad
Note: This pin can be configured either as an oscillator input pin or as PTA BT_ACTIVE. The RNWF02 module does not support both the functionality together. These pins support lower voltage by supplying the V_DDIO pin separately (1.8V - 3.6V). Do not connect any signal to source the voltage. I²C is not available for user configuration. It is connected to the Trust&Go secure device in the RNWF02PC and RNWF02UC module. Do not leave this pin unconnected. Follow as described in the Pin Description column for future upgrade.