M12 Hardware Design
M12_Hardware_Design_V3.3 - 16 -
PWRKEY
EMERG_OFF
SIM
Interface
SD
Interface
BB&RF
RF PAM
SAW
Filter
Serial
Flash
32KHz
26MHzRF Transceiver
Audio
RTC
GPIO
Serial
Interface
Memory
Interface
SIM
Interface
SD
Interface
ADC
RF_ANT
VBAT
VRTC
ADC
GPIO &
Status&
Netlight
UART
Audio
Reset
ESD
PMU
Figure 1: Module functional diagram
2.3. Evaluation board
In order to help customer on the application of M12, Quectel supplies an Evaluation Board (EVB)
that hosts the module directly with appropriate power supply, SIM card holder, RS-232 serial
interface, handset RJ11 port, earphone port, antenna and other peripherals to control or test the
module. For more details, please refer to the document [13].
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