User Manual

JS7688-core-board manual Hangzhou Jotale Technology Co., Ltd www.jotale.com
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Note: When the chip is in "gateway mode", the pin function of the associated network port
multiplexing is unavailable. In this case, the pin function of these multiplexed pins is ethernet
port. While in "Internet of Things device mode", the Ethernet function of these multiplexed pins
is not available and other multiplexing functions are available.JS7688 pin header version and
JS7628 pin header version pin fully compatible in the common motherboard.
2.2.3 Recommend package
Note: “JS7688_convert_board_xxxx.PcbLib” (xxxx is version number) JS7688 module PCB package
library is provided inside。
3. Base board reference design
3.1 Power circuit
The power supply voltage of the core board is 3.3V and the average current is about 185mA.
In order to ensure the stable operation of the core board, a current of at least 500mA should be
reserved for the module (depending on the actual application). The figure below is the design of
3.3V power supply of JS7628 base board
1.27mm 0.8mm
1.9mm
38.5mm
22.0mm
9.8mm
3.14mm
25.71mm
15.38mm