User's Manual
Table Of Contents
- RF Exposure Statement:
- General Notes
- Copyright
- Contents
- Table Index
- Figure Index
- Revision History
- 1Introduction
- 2Package Information
- 3Interface Application
- 3.1Power Supply
- Figure 5: VBAT voltage drop during burst emission
- 3.1.1Power Supply Design Guide
- Figure 6: Power supply application circuit
- Table 7: Recommended Zener diode list
- 3.1.2Recommended Power Supply Circuit
- Figure 7: Linear regulator reference circuit
- Figure 8: Switching mode power supply reference ci
- 3.1.3Voltage Monitor
- 3.2Power on/Power off/Reset Function
- 3.3UART Interface
- 3.4USB Interface
- 3.5USIM Interface
- 3.6PCM Interface
- 3.7SD Interface
- 3.8I2C Interface
- 3.9SDIO Interface
- 3.10SPI Interface
- 3.11Network status
- 3.12Flight Mode Control
- Switch
- 3.1Power Supply
- 4RF Specifications
- 5Electrical Specifications
- 6SMT Production Guide
- 7Packaging
- Appendix
SIM7600SA-H_User Manual_V1.00
2017-10-11
Smart Machine Smart Decision
RI
5900ms
100ms
Idle
Ring
Establish
the call
Hang up
the call
Idle
HIGH
LOW
Figure 17: RI behaviour（voice call）
Note: For more details of AT commands about UART, please refer to document [1] and [22].
DTR pin can be used to wake SIM7600SA-H from sleep. When SIM7600SA-H enters sleep mode,
pulling down DTR can wake SIM7600SA-H.
3.4 USB Interface
The SIM7600SA-H contains a USB interface compliant with the USB2.0 specification as a
peripheral, but the USB charging function is not supported.
SIM7600SA-H can be used as a USB device. SIM7600SA-H supports the USB suspend and
resume mechanism which can reduce power consumption. If there is no data transmission on the
USB bus, SIM7600SA-H will enter suspend mode automatically, and will be resumed by some
events such as voice call, receiving SMS, etc.
MODULE
USB_VBUS
USB_DN
USB
USB_DP
GND
USB_ID
HOST
VBUS
D-
USB
D+
GND
0Ω
D3
D1 D2
Figure 18: USB reference circuit
Because of the high bit rate on USB bus, more attention should be paid to the influence of the
junction capacitance of the ESD component on USB data lines. Typically, the capacitance should
be less than 1pF. It is recommended to use an ESD protection component such as ESD9L5.0ST5G
provided by On Semiconductor (www.onsemi.com ).
D3 is suggested to select the diode with anti-ESD and voltage surge function, or customer could
add a ZENER diode for surge clamping. The recommend diodes please refer to table 7.
Note
：
The USB_DN and USB_DP nets must be traced by 90Ohm+/-10% differential impedance.