3.2 Pinout Diagram

The WLR089U0 module pinout diagram is shown in the following figure.

Figure 3-2. WLR089U0 Module Pinout Diagram

The following table describes the module pin assignment and descriptions. The ATSAMR34J18B pin numbers are added here for reference. For more details on the SiP pin descriptions, refer to SAM R34/R35 Low Power LoRa Sub-GHz SiP Datasheet (DS70005356).

Table 3-1. WLR089U0 Module Pinout Assignment
WLR089U0 Module			ATSAMR34J18B SiP
Pin No.	Pin Name	Possible Peripheral Function⁽¹⁾	SiP Pin No.	Pin Function
1	GND	—	B5, B7, D4, D6, B3, E2, A2, B2, E1, F2, G2, G3, G5, G6, G7 and H5	Ground
2	GND	—		Ground
3	VCC	—	A7, A8, G4 and H8	VDDIN, VDDIO2, VDDIO1 and VBAT_DIG, respectively
4	VCC	—	A7, A8, G4 and H8	VDDIN, VDDIO2, VDDIO1 and VBAT_DIG, respectively
5	PA07	ADC_AIN[7]	F3	EIC_EXTINT[7], RSTC_EXTWAKE[7], ADC_AIN[7], AC_AIN[3], SERCOM0/PAD[3], TCC1/WO[1], CCL0/OUT[0]
6	PA08	GPIO	F4	EIC_NMI, ADC_AIN[16], PTC_X[0], PTC_Y[6], SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0], TCC1/WO[2], CCL1/IN[3]
7	PA27	GPIO	E4	EIC_EXTINT[15], GCLK_IO[0]
8	PA16	SERCOM1_I2C_SDA	F7	EIC_EXTINT[0], PTC_X[4], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6], GCLK_IO[2], CCL0/IN[0]
9	PA17	SERCOM1_I2C_SCL	E6	EIC_EXTINT[1], PTC_X[5], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[1], GCLK_IO[3], CCL0/IN[1]
10	PA18	PWM_T0_W2	E7	EIC_EXTINT[2], PTC_X[6], SERCOM1/PAD[2], SERCOM3/PAD[2], TC4/WO[0], TCC0/WO[2], AC/CMP[0], CCL0/ IN[2]
11	PA19	PWM_T0_W3	E8	EIC_EXTINT[3], PTC_X[7], SERCOM1/PAD[3], SERCOM3/PAD[3], TC4/WO[1], TCC0/WO[3], AC/CMP[1], CCL0/OUT[0]
12	GND	—	B5, B7, D4, D6, B3, E2, A2, B2, E1, F2, G2, G3, G5, G6, G7 and H5	Ground
13	PA15	GPIO	G8	EIC_EXTINT[15], SERCOM2/PAD[3], TC4/WO[1], TCC0/WO[5], GCLK_IO[1]
14	PA14	GPIO	F8	EIC_EXTINT[14], SERCOM2/PAD[2], TC4/WO[0], TCC0/WO[4], GCLK_IO[0]
15	GND	—	B5, B7, D4, D6, B3, E2, A2, B2, E1, F2, G2, G3, G5, G6, G7 and H5	Ground
16	PB22	SERCOM5_SPI_MOSI	E5	EIC_EXTINT[6], SERCOM5/PAD[2], TC3/WO[0], GCLK_IO[0], CCL0/IN[0]
17	PA23	SERCOM5_SPI_Slave_Select	D7	EIC_EXTINT[7], PTC_X[11], SERCOM3/PAD[1], SERCOM5/PAD[1], TC0/WO[1], TCC0/WO[5], USB/SOF 1kHz[6], GCLK_IO[7], CCL2/IN[1]
18	PB23	SERCOM5_SPI_CLK	C7	EIC_EXTINT[7], SERCOM5/PAD[3], TC3/WO[1], GCLK_IO[1], CCL0/OUT[0]
19	PB02	SERCOM5_SPI_MISO	B4	EIC_EXTINT[2], ADC_AIN[10], SERCOM5/PAD[0], TC2/WO[0], SUPC/OUT[1], CCL0/OUT[0]
20	PA22	GPIO	D8	EIC_EXTINT[6], PTC_X[10], SERCOM3/PAD[0], SERCOM5/PAD[0], TC0/WO[0], TCC0/WO[4], GCLK_IO[6], CCL2/IN[0]
21	PA25	USB_DP[6]	C8	EIC_EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC1/WO[1], TCC1/WO[3], USB/DP[6], CCL2/OUT[2]
22	PA24	USB_DM[6]	B8	EIC_EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC1/WO[0], TCC1/WO[2], USB/DM[6], CCL2/IN[2]
23	GND	—	B5, B7, D4, D6, B3, E2, A2, B2, E1, F2, G2, G3, G5, G6, G7 and H5	Ground
24	GND	—		Ground
25	RESET	RESET_N	B6	RESET
26	VSW	VSW	A6	VSW
27	VDDCORE	VDDCORE	A5	VDDCORE
28	PA28	GPIO	C6	EIC_EXTINT[8], GCLK_IO[0]
29	PA31	SWDIO⁽²⁾	D5	EIC_EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1], SWDIO⁽²⁾, CCL1/OUT[1]
30	PA30	SWDCLK⁽²⁾	C5	EIC_EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], SWCLK⁽²⁾, GCLK_IO[0], CCL1/IN[0]
31	PA05	SERCOM0_UART_RX	C4	EIC_EXTINT[5], RSTC_EXTWAKE[5], ADC_AIN[5], AC_AIN[1], SERCOM0/PAD[1], TCC0/WO[1], CCL0/IN[1]
32	PA04	SERCOM0_UART_TX	D3	EIC_EXTINT[4], RSTC_EXTWAKE[4], VREFB, ADC_AIN[4], AC_AIN[0], SERCOM0/PAD[0], TCC0/WO[0], CCL0/IN[0]
33	PB03	SUPC_VBAT	C3	EIC_EXTINT[3], ADC_AIN[11], SERCOM5/PAD[1], TC2/WO[1], SUPC/VBAT
34	PA06	PTC_Y4	E3	EIC_EXTINT[6], RSTC_EXTWAKE[6], ADC_AIN[6], AC_AIN[2], PTC_Y[4], SERCOM0/PAD[2], TCC1/WO[0], CCL0/IN[2]
35	GND	—	B5, B7, D4, D6, B3, E2, A2, B2, E1, F2, G2, G3, G5, G6, G7 and H5	Ground
36	GND	—		Ground
37	GND	—		Ground
38	GND	—		Ground
39	GND	—		Ground
40	GND	—		Ground
41	TPAD_GND	—		Thermal Pad Ground

Note:

The peripheral function indicated in this column is based on the reference design. This is one of the possibilities as each WLR089U0 pin supports several multiplexed peripheral functions mentioned in the pin function column.
This function is only activated in the presence of a debugger.