Specifications
Table Of Contents
- 1Introduction
- 1.1Product Outline
- 1.2Hardware Interface Overview
- 1.3Hardware Block Diagram
- 1.4Functional Overview
- 2Package Information
- 2.1Pin Assignment Overview
- 2.2Pin Description
- 2.3Mechanical Information
- 2.4Footprint Recommendation
- 3Interface Application
- 3.1Power Supply
- 3.3WAKEUP Description
- 3.5UART Interface
- 3.6RI signal behaviors
- 3.7ADC
- 3.8SIM Card Interface
- 3.9Network Status
- 4Operation Mode
- 4.1Operating mode
- 4.2PSM
- 4.3PSM wake up
- 5RF Specifications
- 5.1LTE RF Specifications
- 5.2LTE Antenna Design Guide
- 5.3RF Layout Design Guide
- 6Electrical Specifications
- 6.1Normal Operating Conditions
- 6.2Current Consumption
- 6.3ESD Notes
- 7SMT Production Guide
- 7.1Top and Bottom View of SIM7028
- 7.2Typical SMT Reflow Profile
- 7.4Baking
- 8Packaging
- 8.1Tray packaging
- 9Appendix
SIM7028 Hardware Design V1.00
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Table 6: RESET pin electronic characteristic
Symbol
Description
Min.
Typ.
Max.
Unit
T
reset
The active low level time impulse on RESET pin
to reset module
50
-
–
ms
V
IH
Input high level voltage
1.1
1.3
1.4
V
V
IL
Input high level voltage
-
-
0.3
V
3.3 WAKEUP Description
After SIM7028 enters sleep mode, it can be awakened by pulling down the WAKEUP pin.
WAKEUP is a falling edge wake-up. After the MCU pulls down the WAKEUP pin, it needs to send an AT
command to the module within 10ms. If the RXD end of the module does not receive any AT command
within 10ms, it will immediately enter the sleep mode. If the RXD end of the module receives data within
10ms, it will execute the corresponding instruction and then enter the sleep mode.
Figure 7: WAKEUP wakes up the serial communication is abnormal