Quectel SC262R Series User Manual

Smart Module Series
SC200R&SC262R_Series_Hardware_Design 48 / 124
3.9. USB Interface
SC200R series module provides one integrated Universal Serial Bus (USB) interface which complies with
USB 2.0 specification and supports high-speed (480 Mbps) and full-speed (12 Mbps) modes. The USB
interface supports USB OTG and is used for AT command communication, data transmission, software
debugging and firmware upgrade.
The following table shows the pin definition of USB interface.
Table 12: Pin Definition of USB Interface
For the design of USB 2.0 interface, it is recommended to connect USB_ID directly to the USB_ID pin of
the external USB port for USB ID detection. When you insert a device into the external USB port, the
USB_ID pin of the module will be pulled down to make the module enter host mode.
You can choose either to support USB OTG or not. The following figures show the reference designs.
USB_DP
USB_DM
USB_VBUS
1
2
3
4
5
USB_DP
USB_DM
VUSB
USB_ID
GND
GND GND
GND GND
6 7 8
9
100 nF
Module
C1
D1
D2 D3
ESD ESD ESD
GND
Figure 11: USB Interface Reference Design (OTG Not Supported)
Pin Name
Pin No.
I/O
Description
Comment
USB_VBUS
141, 142
PI
Charging power input;
USB 5 V power input;
USB/adaptor insertion detection
Vmax = 6.2 V
Vmin = 4.35 V
Vnom = 5.0 V
USB_DM
13
AIO
USB 2.0 differential data (-)
USB 2.0 standard
compliant.
90 Ω differential
impedance.
USB_DP
14
AIO
USB 2.0 differential data (+)
USB_ID
16
AI
USB ID detect
High level by default.

Quectel SC262R Series Specifications

General

Brand	Quectel
Model	SC262R Series
Category	Control Unit
Language	English