LinkIt Smart 7688

LinkIt Smart 7688

NOT LinkIt Smart 7688 Duo
(source: seeed wiki )

LinkIt Smart 7688 (a compact controller board) is an open development board, based on the OpenWrt Linux distribution and MT7688 (datasheet). The board is designed especially for the prototyping of Rich Application IoT devices for Smart-Home. The board offers sufficient memory and storage to enable robust video processing. The platform also offers options to create device applications in Python, Node.js and C programming languages. This board is only a part of MediaTek LinkIt Smart 7688 platform which includes other development boards.


Single input single output (1T1R) Wi-Fi 802.11 b/g/n.
Pin-out for GPIO, I2C, I2S, SPI, UART, PWM and Ethernet Port.
32MB Flash and 128MB DDR2 RAM.
USB host.
Micro SD slot.


Category Feature Specification
MPU Chipset MT7688AN
Core MIPS24KEc
Clock speed 580MHz
Working voltage 3.3V
PCB Size Dimensions 55.7 x 26 mm
Memory Flash 32MB
Power Source USB Power 5V (USB micro-B)
VCC 3.3V (Pin Breakout)
GPIO Pin Count 22 (MT7688AN)
Voltage 3.3V
PWM Pin Count 4 (MT7688AN)
Voltage 3.3V
Max. Resolution 7 bits (customizable)
Maximum Frequency@Resolution 100kHz@1-bit, 50kHz@2-bit, 25kHz@3-bit, 12.5kHz@4-bit, 6.25kHz@5-bit, 3.125kHz@6-bit, 1.5625kHz@7-bit (Standard mode)
40MHz@1-bit, 20MHz@2-bit, 10MHz@3-bit, 5MHz@4-bit, 2.5MHz@5-bit, 1.25Mhz@6-bit, 625kHz@7-bit (Fast mode)
External Interrupts Pin Count 22 (MT7688AN)
SPI Set count 1 (MT7688AN)
Pin numbers P22, P23, P24 (Shared with on-board flash), P25
Max. Speed 25 MHz
SPI Slave Set count 1 (MT7688AN)
Pin numbers P28, P29, P30, P31
Max. Speed 25 MHz
I2S Set count 1 (MT7688AN)
Pin numbers P10, P11, P12, P13
I2C Set count 1
Pin numbers P20, P21
Speed 120K/400K
UART Lite Set count 3 (MT7688AN)
Pin numbers P8, P9, P16, P17, P18, P19
Max. Speed 0.5Mbps
USB Host Set count 1 (MT7688AN)
Pin numbers P6, P7
Speed Micro-AB
ICommunication Wi-Fi 1T1R 802.11 b/g/n (2.4G)
Ethernet 1-port 10/100 FE PHY
Pin numbers P2, P3, P4, P5
User Storage SD Card Micro SD SDXC

Hardware Overview


1 Like