MT7697

Overview

MT7697 is a highly integrated SoC which features a Cortex-M4 application processor, a low power 1x1 802.11b/g/n single-band Wi-Fi subsystem, a Bluetooth subsystem, and a Power Management Unit. MT7697D is an enhanced version with additonal support to 802.11a and 5GHz band.

MT7697 key features

  • Integrate 4Kbit eFuse to store device specific information and RF calibration data

  • Advanced Wi-Fi/Bluetooth coexistence scheme

  • High integration with RF+MCU+Memory

  • Low power mode with RTC

The application processor subsystem contains ARM Cortex-M4F MCU. It also includes many peripherals, including UART, I2C, SPI, I2S, PWM, IrDA, and auxiliary ADC. It also includes embedded SRAM/ROM.


The Wi-Fi subsystem contains the 802.11b/g/n radio, baseband, and MAC that are designed to meet both the low power and high throughput application. It also contains a 32-bit RISC CPU that could fully offload the application processor. The Bluetooth subsystem contains the Bluetooth radio, baseband, link controller. It also uses the same 32-bit RISC CPU for the Bluetooth protocols.

MT7697D key features

The difference between MT7697 and MT7697D is that, MT7697D supports additional features below:

  • IEEE 802.11a

  • 5GHz band

  • Dual-band 1T1R

MT7697 chipset block diagram

Platform

  • ARM Cortex-M4 MCU with FPU up to 192MHz

  • Embedded 352kB SRAM and 64kB boot ROM

  • Supports external serial flash with Quad Peripheral Interface (QPI) mode

  • Supports execute in place (XIP) on flash

  • 32KB cache in XIP mode

  • 25 DMA channels

  • Low power RTC mode with 32kHz crystal support

Secure boot and crypto engine

  • Secure Boot from serial flash

  • Hardware crypto engines including AES, DES/3DES, SHA2 for network security

Connectivity

  • SPI, UART, I2C, I2S, PWM, ADC, IrDA, GPIO

Technology and package

  • Highly integrated 40nm RFCMOS technology

  • 8mm x 8mm 68-pin QFN package

WLAN

  • IEEE 802.11 b/g/n compliant

  • Dedicated high-performance 32-bit RISC CPU

  • Supports 20MHz, 40MHz bandwidth in 2.4GHz band

  • Single-band 1T1R mode with data rate up to 150Mbps

  • Supports STBC, LDPC

  • Greenfield, mixed mode, legacy modes support

  • IEEE 802.11 d/e/h/i/k/r/w support

  • Security support for WFA WPA/WPA2 personal, WPS2.0, WAPI

  • Supports 802.11w protected managed frames

  • QoS support of WFA WMM, WMM PS

  • Integrated LNA, PA, and T/R switch

  • Optional external LNA and PA support

  • RX diversity support with additional RX input

Bluetooth

  • Bluetooth 4.2 Low Energy (LE)

  • Integrated BALUN and PA

  • Supports SCO and eSCO link with re-transmission

  • Channel assessment for AFH

LinkIt 7697 HDK by Seeed Studio

The LinkIt 7697 HDK is an Internet of Things (IoT) applications development board based on MediaTek MT7697 SoC. The MT7697 chip is based on ARM Cortex-M4 processor with FPU and features 802.11b/g/n Wi-Fi and Bluetooth 4.2 Low Energy connectivity.

Features

  • ARM Cortex-M4 based MT7697 SoC @ 192MHz

  • 802.11b/g/n wireless connectivity

  • Bluetooth 4.2 Low Energy

  • 352 KB of RAM

  • 4 MB external Flash memory

  • Micro-USB port for power supply

  • Virtual COM port through onboard CP2102N USB-to-UART chipset

  • Two buttons for system reset and external interrupt

  • Peripheral interfaces including GPIO, UART, I2C, SPI, PWM, EINT, ADC, IrDA, I2S

  • Pin headers for SWD debugging

  • LinkIt SDK GCC, IAR Embedded Workbench, and Keil uVision IDE (Get Started Guide)

  • Additional add-on Package for Arduino IDE support

  • Size: 48 x 26 mm (1.89 x 1.02 inches)

Downloads

AI7697H and AI7697HD by AcSiP

AI7697H is a highly integrated SIP module which features MT7697 with 4MB serial flash and MHF4 series connector on a 18x18mm footprint. AI7697HD is a variation which features MT7697D.

wrtnode^7 by wrtnode

wrtnode^7 is the all-in-one module of MT7697 with 4MB flash and build-in ceramic antenna or external antenna via IPEX MHF4, with extremely tiny size in 23x18mm while all pins out.