User Manual

JS7688-core-board manual Hangzhou Jotale Technology Co., Ltd www.jotale.com
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1. Product overview
JS7688 core board module is a WIFI module based on MTK (Mediatek) MT7688AN SOC chip
scheme launched by Hangzhou Jotale Technology Co., LTD.CPU frequency up to 580MHz,
onboard optional 64MB DDR2 RAM/8MB Flash, 128MB DDR2 RAM/16MB Flash, 256MB DDR2
RAM/32MB Flash configuration, 150M WIFI, external leads USB 2.0 Host, GPIO, UART, I2S, I2C,
SD card interface, SPI, PWM, Ethernet interface, WIFI antenna interface, etc..
This module is small in size, low in power consumption, low in heat, and stable in WIFI and
network port transmission performance. Running OpenWRT (Linux) system can run stably for a
long time. The peripheral circuit of the module is very simple. It only needs to add 3.3V DC power
supply to start the system and can be controlled through WIFI. The use of gold-plated needle
connection or stamp hole connection, can be very stable fixed on the bottom plate.
It can be used in many applications such as smart home, IP camera, VOIP, remote shooting
aircraft, remote monitoring system, simple WEB network
server, simple FTP server, remote download, remote vision car, etc
.
We specially develops the motherboard for this core board, the composition JS7688
development board, and provides the detailed development information, facilitates the user to
study, the development, the details please enter www.jotale.com website to view.
Product parameter
Product name JS7688-core-board
Product model JS7688_CORE_BOARD
Operating system OpenWrt (Linux)
CPU MT7688AN MIPS 24KEc
System frequency 580MHz
RAM 64MB/128MB/256MB DDR2 RAM
Flash 8MB/16MB/32MB Nor flash
Ethernet interface 5 x WAN/LAN 10/100M adaptive
USB interface 1 x USB 2.0 host
PCIE interface 1 x PCIE
UART interface UART0（debug by default）, UART1, UART2
GPIO interface
Total 40 (reused with other functions)
I2S
x 1，support VOIP
I2C 1xI2C master
SPI master
2 x SPI master(One of them is occupied by Flash and the
other is free)