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