Users Manual Part 1

SIM7022-EVB User Guide V1.00
www.simcom.com
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2 Interface Introduction
The interface of SIM7022 EVB is shown in the table below.
Table 5: Interface introduction
Function
Reference number
Description
(U)SIM
J102
(U)SIM card interface
UART
J103
J103 is used for AT command communication,
data transmission and firmware upgrade
J104
J104 is used for software debugging
LEDS
LED101
LED101：Network status indicator light
LED102
LED102：Power status indicator light
LED103
LED103：Power-on status indicator light
Switches
SW101
SW101：Power supply switch
SW1
SW1：Firmware upgrade switch
Buttons
SW102
SW102：RESET button
SW103
SW103：WAKEUP button
Test points
J101 J105 J106 J107
J101 J105：Power test point
J106 J107：Module signal test point
More detailed introductions about the above functions are shown in the next section.
2.1 Power Supply
2.1.1Power Supply
SIM7022 EVB is powered by micro USB, USB plug-in connection device J103, J104 can achieve 5V power
supply effect.
The power supply block diagram of SIM7022 EVB is shown in the figure below.