MT7687/MT7697 Resources

MediaTek LinkIt 7687 and 7697 HDK by SAC resources include downloads, documentation and training to develop applications based on LinkIt for RTOS development platform. 

Get Started

Follow the details in the Get Started guide to develop applications with LinkIt SDK v4 on LinkIt 7687 and LinkIt 7697 HDKs:

Additional Resources

  • FAQ: Get answers to the most common technical and business questions about the LinkIt 7687/7697 HDK.
  • Forum: Discover answers to technical questions and, once you've registered your MediaTek Labs account, pose questions to our technical gurus and exchange views with the community.

Downloads and Documentation

Reference Designs

Visit Documentation page to download reference designs and application notes.

MediaTek MT7687F and MT7697 

MediaTek MT7687F and MT7697 are highly integrated single chipsets featuring ARM Cortex-M4 with FPU and Wi-Fi subsystem.

The chipsets based on Cortex-M4 with FPU run at 192MHz, support Wi-Fi b/g/n 2.4G and have the same QFN (8 x 8 mm) package.

The differences are:

  • MT7687 provides integrated 2MB flash memory, while MT7697/MT7697D relies on external flash memory.
  • MT7697 and MT7697D provides additional Bluetooth LE connectivity along with the Wi-Fi connectivity. MT7697D provides 5G Wi-Fi support.
  MT7687 MT7697
Part Number MT7687F MT7697 MT7697D
Cortex-M4 with FPU
Maximum frequency at 192 MHz
Wi-Fi b/g/n 2.4G a/b/g/n 2.4G/5G
Bluetooth - LE LE
Flash 2MB External
RAM 352kB
8 x 8 mm
HDK LinkIt 7687 - -

Software Architecture

MT7687 and MT7697 are accompanied with LinkIt SDK v4 for software development. Based on CMSIS and FreeRTOS, the LinkIt SDK v4 provides a 3-layer architecture, including BSP, Middleware and Application.

LinkIt SDK v4 Architecture Diagram (MT7687 and MT7697)

  • Modules in gray are not supported by MT7697.
  • MT7687 does not support Bluetooth LE.

SDK Features

LinkIt SDK for RTOS provides Wi-Fi and network connectivity, peripheral drivers and other features. 


Wi-Fi is a key feature included in the SDK. It supports both station mode and access point (AP) mode. The Wi-Fi libraries are released as a binary.

STA mode features

Item Features
Standard 802.11 b/g/n station
Channel Channel 1~13
Personal Security Open, WEP-Open, WPA, WPA2
Enterprise Security N/A
WPS Enrollee (PBC / PIN)
Advanced AMPDU, RX-Filter, DTIM

AP mode features

Item Features
Standard 802.11 b/g/n station
Channel Channel 1~13
Personal Security Open, WEP-Open, WPA, WPA2
Support Clients 9 STAs(AP only mode)
WPS Registrar (PBC/PIN) , Enrollee (PIN)
Enterprise Security N/A


 Network connectivity is one of the key features of the LinkIt SDK for RTOS, including IPv4, TCP and HTTP.

Item Features
IP Stack IPv4 (LWIP), TCP, UDP, ICMP, DHCP Client/Server, DNS Client, NETCONN, SOCKET
SNTP Simple Network Time Protocol, RFC 4330, SNTP receive timeout, SNTP update delay, SNTP max server
HTTP HTTP 1.1, Client (Post/Get)
HTTPS HTTP 1.1, Client (Post/Get)
SSL/TLS mbedTLS, Client, Server (not test), SSL3.0, TLS1.0, 1.1, 1.2, AES, 3DES, DES, ARC4, MD5, SHA-1, SHA-256, RSA/PKCS#1 v1.5

Peripheral drivers

The detailed list of peripheral driver features released in the SDK is provided below.

Item Features
• Set Pull Up/Down for GPIO IN mode
PWM • 256 Duty Cycle range
• 32kHz, 2MHz, XTAL clock for PWM frequency reference
UART • 2 Full set (TX/RX) UART support
• Baud rate of up to 921600
Flash • Default 2MB SIP Flash
• Support external flash up to 16MB

• Analog to Digital Converter, 12bit, 4 channels, 125kHz sample rate


• Two I2Cs
• Supports 50/100/200/400 kHz transmission rate


• TX (NEC, RC5, RC6, Pulse Width)
• RX (RC5, Pulse Width)


• General Purpose Counter
• Supports 1MHz pulse detection


• Supports hardware, software watchdog
• Supports chip reset


• Supports sample rates: 8/12/16/24/32/48 kHz
• Supports mono and stereo mode


• Serial Peripheral Interface


• Real Time Clock


• General Purpose DMA


• SHA1, SHA2 (256, 384, 512), MD5, AES, 3DES


• Truly Random Number Generator
• Generates 32-bit random number

Advanced features

Other essential features included in the LinkIt SDK for RTOS are listed below.

Item Features
XML • Mini-xml
• Support Entity
• Support Get/Set
• Support Index
• Support Search
• JSON string parser
Smart Connection • MediaTek smart connection
CLI command • CLI command parser