Product Specs

P18
USB_DN/NC
Digital I/O
GPIO7,PWM1/USBN./NC
P19
USB_DP/NC
Digital I/O
GPIO6,PWM0/USBP./NC
P20
NC
NC
NC
P21
GPIO8
Digital I/O
GPIO8,SD_CLK//SPI2_SCK
P22
NC
NC
NC
P23
GPIO15
Digital I/O
GPIO15,Soft shut down and wake up (active high)
P24
VCC3IO
VCCSD
SD POWER
P25
GPIO13_SDO
Digital I/O
GPIO13,JTAG_TDI/PWM4/ADC6/PCM_DIN/SD_DATA0/SPI2_MIS
O
P26
GPIO11_CLK
Digital I/O
GPIO11,JTAG_TCK/PWM2/ADC4/PCM_SYNC/SD_CLK//SPI2_SCK
P27
GPIO12_CMD
Digital I/O
GPIO12,JTAG_TMS/PWM3/PCM_CLK/SD_CMD/SPI2_MOSI
P28
MICINN
MIC-NC
Microphone input negative,/NC
P29
LIN_L
AUX_INPUT
LINL
P30
V2MICB1AS
VMIC
Microphone reference voltage
P31
MICINP
MIC+
Microphone input positive
P32
LIN_R
AUX_INPUT
LINR
P33
AUDIORN
Audio output
Audio right channel negative
P34
AUDIORP
Audio output
Audio right channel positive
P35
AUDIOLP
Audio output
Audio left channel positive
P36
AUDIOLN
Audio output
Audio left channel negative
P37
GND
GND
Ground connect battery negative
P38
NC
NC
NC
P39
NC
NC
NC
P40
GND
GND
RF_GND
P41
RFP1
RF
RF_OUT /NC
P42
GND
GND
RF_GND
7. Notes
A. During the use of the module, please pay attention to avoid the influence of interference
sources such as power amplifier, boost circuit and DC/DC circuit on the module, and avoid the
module power supply circuit forming series circuit with high power circuit unit to reduce the
interference
B. If there are batteries, metal objects, LCD screens, horns, etc. next to the module antenna,
the distance from the antenna is required to be at least 15 mm (as shown)