AI-NB25 Development Kit
Manual
AI-Link Confidential
2.
Overview
AI-NB25-EVB is a NB-IoT series development board with standard Arduino interface. Its physical
dimension is 70
mm × 66xmm ×11mm.
AI-NB25-EVB development board can be used alone or in
combination with STM32
Nucleo
-64 series development board for debugging and application
development. Establish communication between NB-IoT radio communication protocol
(3GPP rel. 13 and 3GPP rel. 14) and basic equipment of mobile network operator’s application.
2.1. Performance Summary
The following table details the main performance of AI-NB25-EVB development board.
Table 1
：
AI-NB25-EVB main performance of development board
Characteristic Explanation
USB Interface
Input voltage range
：
4.75V~5.25V
Voltage Supply Typical supply voltage
：
5.0V
Support standard Arduino interface
Transmitting Power 23dBm±2dB
1)
Common operating temperature
：
-
35°C ~ +75°C
Temperature Range
2)
Extended operating temperature: -
40°C ~ +85°C
Storage temperature range
：
-
40°C ~ +90°C
USIM Interface
Support 1.8V/3.0V external USIM card
Communication port switch Used to switch Arduino and External USB interface
Provide 3-way UART interface
Main serial port ( AT_CMD port )
：
⚫
AT command transmission. The baud rate only support 115200bps
⚫
Firmware upgrade. The baud rate only support 921600bps
USB Interface Debug serial port ( Gennie port )
：
⚫
Used to output log information for software debugging
⚫
The baud rate only support 921600bps
Auxiliary serial port ( Extended UART port )
：
⚫
AT command transfer and data transfer
⚫
The baud rate support 115200bps
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