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	I	The I²C clock line connects to the Trust&GO device Connect it with the host MCU’s I²C clock pin and add a 1.2 kΩ pull-up resistor only for RNWF02PC and RNWF02UC devices to enable the host-controlled Trust&GO security feature.
3	I2C_SDA	I/O	The I²C data line connects to the Trust&GO device. Connect it with the host I²C SDA pin and add a 1.2 kΩ pull-up resistor on the host board only for RNWF02PC and RNWF02UC devices to enable the host-controlled Trust&GO security feature.
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	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), (6)}	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), (4)}	I	32.768 KHz RTCC Oscillator input PTA interface, Bluetooth Coexistence device active indication input to RNWF02
22	RTCC_OSC_OUT⁽⁴⁾	O	32.768 KHz RTCC Oscillator output
23	VDDIO	P	I/O power supply (1.8-3.6V)
24	TP	P	PMU Output Test point: 1.5V⁽³⁾
25	NC	—	No connection
26	DFU_TX/Strap2	O	Device Firmware Update, transmit signal
26	DFU_TX/Strap2	I	Host interface configuration, Strapping2 pin. For more details on the exact configuration, refer to Table 2-2.
27	UART2_TX^{(2), (6)}	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 external 1.5V supply. The current firmware does not support the RTCC Oscillator function; it is recommended to have an option to mount the RTCC Oscillator in the design to upgrade with the future version of firmware releases. Do not leave this pin unconnected. Follow the Pin Description column as described for future upgrades. For more details, refer to the RNWF02 Module External Antenna Calibration Guide (DS50003750).