WF-M620-RSD2
IEEE 802.11a/b/g/n 1T1R IoT Module
Sichuan AI-Link Technology Co., Ltd.
page
6 of 16
Pin#
Pin name
Type
Description
1
GND
P
Ground
2
GND
P
Ground
3
3V3
PI
DC 3.3V Power Supply
4
3V3
PI
DC 3.3V Power Supply
5
GPIO0/PWM0
DIO
Interrupt-capable GPIO multiplexed with PWM output
6
GPIO1/PWM1
DIO
Interrupt-capable GPIO multiplexed with PWM output
7
GPIO2/PWM2
DIO
Interrupt-capable GPIO multiplexed with PWM output
8
GPIO3/PWM3
DIO
Interrupt-capable GPIO multiplexed with PWM output
9
GPIO4/PWM4
DIO
Interrupt-capable GPIO multiplexed with PWM output
10
GPIO5/PWM5
DIO
Interrupt-capable GPIO multiplexed with PWM output
11
GPIO26/SCLK0/TXD0
DIO
GPIO multiplexed with ISU0
[1]
functions(SPI CLK/UART TX)
12
GPIO27 /MOSI0/RTS0/SCL0
DIO
GPIO multiplexed with ISU0 functions(SPI MOSI/UART RTS/I2C CLK)
13
GPIO28/MISO0/RXD0/SDA0
DIO
GPIO multiplexed with ISU0 functions(SPI MISO/UART RX/I2C DATA)
14
GPIO29/CSA0/CTS0
DIO
GPIO multiplexed with ISU0 functions(SPI CSA/UART CTS)
15
GPIO31/SCLK1/TXD1
DIO
GPIO multiplexed with ISU1 functions(SPI CLK/UART TX)
16
GPIO32/MOSI1/RTS1/SCL1
DIO
GPIO multiplexed with ISU1 functions(SPI MOSI/UART RTS/I2C CLK)
17
GPIO33/MISO1/RXD1/SDA1
DIO
GPIO multiplexed with ISU1 functions(SPI MISO/UART RX/I2C DATA)
18
GPIO34/CSA1/CTS1
DIO
GPIO multiplexed with ISU1 functions(SPI CSA/UART CTS)
19
GND
P
Ground
20
GND
P
Ground
21
GPIO36/SCLK2/TXD2
DIO
GPIO multiplexed with ISU2 functions(SPI CLK/UART TX)
22
GPIO37/MOSI2/RTS2/SCL2
DIO
GPIO multiplexed with ISU2 functions(SPI MOSI/UART RTS/I2C CLK)
23
GPIO38/MISO2/RXD2/SDA2
DIO
GPIO multiplexed with ISU2 functions(SPI MISO/UART RX/I2C DATA)
24
GPIO39/CSA2/CTS2
DIO
GPIO multiplexed with ISU2 functions(SPI CSA/UART CTS)
25
GPIO41/ADC0
ADIO
GPIO multiplexed with ADC input
26
GPIO42/ADC1
ADIO
GPIO multiplexed with ADC input
27
GPIO43/ADC2
ADIO
GPIO multiplexed with ADC input
28
GPIO44/ADC3
ADIO
GPIO multiplexed with ADC input
29
VREF_ADC
AI
Reference voltage input for ADC
[2]
30
EXT_PMU_EN
DO
External power supply enable output
31
WAKEUP
DI
External wakeup from RTC mode (deepest sleep mode)
32
AVDD_3V3_RTC
PI
Power rail for real-time clock
[3]
33
VOUT_2V5
PO
Output from internal 2.5V LDO
34
PMU_EN
DI
Internal PMU override. If driven low, MT3620 is turned off and in a very low power
state, equivalent to RTC mode power consumption. Only the PMU quiescent
current will be drawn. When released, the PMU will start up.
35
DEBUG_CTS
DI
Azure Sphere OS debug CTS
Debug UART is for Microsoft use only.
36
DEBUG_RXD
DI
Azure Sphere OS debug RXD
37
DEBUG_RTS
DO
Azure Sphere OS debug RTS/
Strapping pin when MT3620 boot up
38
DEBUG_TXD
DO
Azure Sphere OS debug TXD
39
GND
P
Ground
40
GND
P
Ground
41
3V3
PI
DC 3.3V Power Supply
42
3V3
PI
DC 3.3V Power Supply
43
SWD_DIO
DIO
ARM SWD data
SWD is used for programming and
debugging the 2X Cortex-M4 on
MT3620.A single SWD channel is
shared between two Cortex-M4.
44
SWD_CLK
DI
ARM SWD clock
45
SWO
DO
ARM SWO debug output
