USR IOT USR-C210 Hardware Manual Download Page 7

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USR-C210 Hardware Manual

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2.3.

UART Interface

When communicate to MCU with 3.3V, just connecting TXD of module to RXD of MCU and RXD of module to

TXD of MCU.

When communicate to MCU with 5V, switching circuit is necessary.

Switching circuit diagram as follows:

2.4.

Reset and Reload

nReload:nReload pin can connect to external button or configuration pin.Press button 1s to 3s to enter

simplelink mode,press over 3s to restore factory settings.nReload pin should connect to external 4.7k-10k

Ohm pull-up resistor.

nReset:Reseting the module and taking effect in low level.nReset pin connect to internal 100K Ohm pull-up

resistor to 3.3V.Press over 0.5s and release to reset the device.

Circuit diagram as follows:

Summary of Contents for USR-C210

Page 1: ...USR C210 Hardware Manual www usriot com Jinan USR IOT Technology Limited 1 9 h usriot com USR C210 Hardware Manual File version 1 0 0...

Page 2: ...Content USR C210 Hardware Manual 1 1 Product Overview 3 1 1 Dimension 3 1 2 Encapsulation Size 3 1 3 Pin Defination 4 2 Hardware Design 6 2 1 Typical Connection 6 2 2 Power Interface 6 2 3 UART Inter...

Page 3: ...IOT Technology Limited 3 9 h usriot com 1 Product Overview 1 1 Dimension Module size 18 22 26 65 2 80mm error 0 2mm pin size as follows 1 2 Encapsulation Size You can download PCB library from http ww...

Page 4: ...ble 7 NC N Not Available 8 GND N Not Available 9 NFC_IN N Not Available 10 NFC_IP N Not Available 11 GND P Power Ground 12 GND P Power Ground 13 VCC P VCC 3 3V 14 VCC P VCC 3 3V 15 NC N Not Available...

Page 5: ...er Ground 29 GND P Power Ground 30 UART_LOG_TX O LOG debugging UART_TX pin 31 UART_LOG_RX I LOG debugging UART_RX pin 32 NC N Not Available now 33 SPI_IRQ I O SPI requesting pin Not Available now 34 S...

Page 6: ...gn 2 1 Typical Connection 2 2 Power Interface Recommend switching power supply Working voltage VCC range from 3 0V 3 6V 3 3V is recommended Power the module by main power pin pin interface is in paral...

Page 7: ...itching circuit diagram as follows 2 4 Reset and Reload nReload nReload pin can connect to external button or configuration pin Press button 1s to 3s to enter simplelink mode press over 3s to restore...

Page 8: ...nna pin 2 Keep antenna away from metal inductance or some other interference source 3 Ensure antenna location on margin of PCB board 3 Contact Company Jinan USR IOT Technology Limited Address Floor 11...

Page 9: ...terms and conditions we don t take any other responsibilities We don t warrant the products sales and use explicitly or implicitly including particular purpose merchantability and marketability the t...