MT7697

Overview

MT7697/MT7697D is highly integrated single chip which features an application processor, a low power 1x1 11n single-band Wi-Fi subsystem, a Bluetooth subsystem, and a Power Management Unit.

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 802.11 a

  • 5GHz band

  • Dual-band 1T1R

MT7697 chipset block diagram

Platform

  • ARM Cortex-M4 MCU with FPU

  • 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