Data Sheet

EMW3076 Series Wireless Module Data Manual
Copyright of Shanghai MXCHIP Information Technology Co., Ltd.
1
Pin Definition
Table 1 Pin Definition
Pin
Number
Alternate
Function 1
Alternate
Function 2
Alternate
Function 3
Alternate
Function 4
Analog
Function
Alternate
Function 4
Analog
Function
1
nRESET
nRESET
2
P15
(1)
SEL2
PWM2
SPI2_MOSI
UART1_RT
S
GPIO15
3
P7
GPIO7
SPI0_SCK
SDIO_DATA
1
UART0_RT
S
PWM6
ADC_CH3
4
P9
GPIO9
SPI0_MISO
SDIO_DATA
3
I2C1_SDA
UART1_RXD
ADC_CH5
5
P8
GPIO8
SPI0_MOSI
SDIO_DATA
2
I2C1_SCL
UART1_TXD
ADC_CH4
6
P6
GPIO6
SPI0_CSN
SDIO_DATA
0
UART0_CT
S
PWM4
ADC_CH2
7
P10
(1)
SEL3
PWM1
GPIO10
UART2_CT
S
SPI2_SCK
ADC_CH6
8
P11
(2)
GPIO11
PWM3
SDIO_INT
UART2_RT
S
SPI2_MOSI
ADC_CH7
9
P14
(1)
SEL1
PWM0
SPI2_SCK
UART1_CT
S
GPIO14
10
P13
(2)
GPIO13
GPIO13
SPI2_MISO
UART2_RX
D
GPIO13
11
P1
GPIO1
UART0_RXD
SWDIO
SPI1_SCK
PWM7
12
P0
GPIO0
UART0_TXD
SWCLK
SPI1_CSN
PWM5
13
VDD
VDD
14
VSS
VSS
(1). During the startup phase, the chip processor hardware enters the corresponding operating mode by detecting
the state of these pins, see Section 4.1. All other digital pins are in input pull-down mode by default after hardware
startup, and the pull-down resistors are 10-20k ohms until the firmware changes their state.
(2). After the startup is completed, when the processor runs the firmware provided by MXCHIP, the firmware
detects the status of these pins to enter the corresponding working mode, see section 4.2.
(3). In the firmware provided by MXCHIP, it is usually used as the input of the debugging information and the
input of the command, that is, the debugging serial port.
(4). When the IO port is set to the UARTx_RX signal, the hardware should not be grounded, otherwise the
processor will not work properly.