Mediatek MT2533D is a Bluetooth 4.2 SiP for Smart Headphones & Hands-Free Systems

There used to be a time when most products were based on a general purpose MCU or processor that you would interface to over chips like audio codecs, memory chips, flash storage, etc…, but in order to cut costs, application specific SoCs have become quite common over the year, so we’ve had mobile application processors for several years already, but more recently we got “wearables” SoCs and “Smart Home” SoCs, and Mediatek has launched MT2533D “headphone” SiP (System-in-Package) combining a Cortex-M4 MCU, 4MB PSRAM, an audio codec, and a dual mode Bluetooth subsystem. Mediatek MT2533D specifications: MCU –  ARM Cortex-M4 @ up to 208MHz with 32KB L1 cache, FPU, MPU, AES 128/192/256 crypto engine and TRNG Memory – 160kB SRAMs, 4MB pseudo SRAM Storage – 4MB flash Wireless Connectivity – Bluetooth 4.2 dual mode (classic and low energy) Audio AAC/SBC for Bluetooth audio CVSD/mSBC for Bluetooth speech PCM playback: 8-48kHz sample rate PCM record: 8kHz and 16kHz sample rate Dual-mic …

$20 MediaTek LinkIt 7687 Arduino Compatible WiFi IoT Board Runs FreeRTOS

MediaTek Labs has already launched several WiFi boards for IoT applications starting with LinkIt ONE, and later LinkIt Smart 7688 running OpenWrt, and the company is now about to launch LinkIt 7687 HDK (Hardware Development Kit) powered by Mediatek MT7687F Cortex-M4 SoC,  running FreeRTOS, and developed & produced by Silicon Application Corp (SAC). LinkIt 7687 (WS3489) board specifications: SoC – MediaTek MT7687F ARM Cortex-M4F MCU @ 192MHz with 352 KB SRAM, 64KB ROM, and 2 MB serial flash in package, integrated security engine, and built-in 802.11n WiFi. 8×8 mm 68-pin QFN package Connectivity – 1×1 802.11 b/g/n WiFi with on-module PCB antenna and U.FL connector. USB – 1x micro USB for power, debugging (Coresight Debug Access Port + Virtual COM) Expansion Arduino Uno Rev. 3 headers + an extra 8-pin extension connector. Mass Storage Device (MSD) flash programming interface. Reserved headers for power consumption (current) measurement. Misc – LEDs for UART communication, power, and 6x user customizable; 3x push buttons …

Quick Start Guide for LinkIt Smart 7688 (Duo) Board

Mediatek Labs has announced LinkIt Smart 7688 development boards powered by Mediatek MT7688 WiSoC earlier today, but I was selected for a close beta several weeks before the launch, and I’ve had time to play a little with the boards, so today I’ll report my experience getting started with LinkIt Smart 7688 amd 7688 Duo by writing a Quick Start Guide showing how to setup the boards, upgrade firmware, access the serial console, run “Blink LED” sample applications with Python and JavaScript, as well as the Arduino IDE, and connect to the Internet. Initial Setup You’ll only need a micro USB cable and a computer with WiFi and USB ports to get started with the board. The green LED (top) for the MCU will turn on immediately, while the red LED (bottom) for WiFI will blink once, and only turn on continuously after 5 seconds, and within 30 seconds after that you should get WiFi connectivity. Since you just need …

Mediatek LinkIt Smart 7688 and Smart 7688 DUO Boards Run OpenWRT for IoT Applications

MediaTek LinkIt is a collection of development platforms designed for the prototyping of wearables and Internet of Things (IoT) devices, and last year they started with LinkIt ONE board based on Mediatek MT2501 “Aster” micro-controller and featuring WiFi, Bluetooth, GPSD and GSM/GPRS connectivity. Mediatek Labs has now launched two new LinkIt board, namely LinkIt Smart 7688 and LinkIt Smart 7688 DUO, both powered by Mediatek MT7688 MIPS processor and running OpenWRT, with the latter also adding an Atmel ATmega32U4 for Arduino compatibility. LinkIt Smart 7688 Board LinkIt Smart 7688 is then the simpler of the two with the following specifications: Processor – Mediatek MT7688AN MIPS24KEc processor @ 580 MHz with WiFi System Memory – 128MB DDR2 RAM. Storage – 32MB flash + micro SD slot Connectivity – 1T1R Wi-Fi 802.11 b/g/n with chip antenna and I-PEX conector USB – 1x micro USB host port, 1x micro USB port for power Expansion – 2x 18-pin headers with GPIOs, I2C, I2S, SPI, …