Pin Description - SimCom SIM5320AL User Manual

67 UART_CTS
69 UART_RI
71 UART_TXD
73 NC
75 NC
77 GND
79 GPS_ANT
2.2

Pin description

Table 3: Pin description
Pin name
Power Supply
VBAT_RF/VBAT_BB
VRTC
VREG_AUX
GND
Power on/off
POWER_ON
Audio interface
MIC1P
MIC1N
EAR1P
EAR1N
SPK_P
SPK_N
USIM interface
V_USIM
USIM_DATA
USIM_CLK
USIM_RESET
SPI interface
SPI_CLK
SPI_CS_N
SIM5320AL_User Manual_V1.01
I/O Description
Power supply voltage
I/O Power supply for RTC
O LDO power output
Ground
POWER_ON should be pulled low at
I least 64ms to power on or 500ms to
power off the module.
I Differential audio input
O
Differential audio output
O
Voltage Supply for SIM card
O
Support 1.8V or 3V SIM card
I/O SIM Data Output/Input
O SIM Clock
O SIM Reset
O SPI clock
O SPI chip-select
68 UART_RXD
70 UART_DCD
72 UART_DTR
74 NC
76 NC
78 GND
80 GND
17
Smart Machine Smart Decision
Comment
If it is unused, keep open.
If it is unused, connect to
ground through a 100N
capacitor.
If these pins are unused，
keep open.
All signals of
interface should
protected against
ESD/EMC.
If it is unused, keep open.
2014-08-20
SIM
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