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May 09, 2019
Data Sheet and User Manual
AES-MS-MT3620-M-G Module
Data Sheet and User Manual
Overview
The AES-MS-MT3620-M-G is a small form-factor, tri-core Wi-Fi SoC module, intended for use as a secure
Wi-Fi client, in internet-
connected IoT applications. Avnet’s production-ready, certified module comes fitted
with a single dual-band chip antenna, for cost-optimized application in 2.4 GHz or 5GHz Wi-Fi networks
Based on the MediaTek MT3620AN SoC, this is a new class of connected SoC IoT device that facilitates
“end-to-end security”. User applications can target it’s 500 MHz ARM Cortex-A7 core as well as two general
purpose 200 MHz ARM Cortex-M4F I/O subsystem cores designed to support real-time requirements. The
on-chip peripherals (GPIO, UART, I2C, SPI, I2S, PWM and ADC) can be mapped to any of these three
user-accessible processor cores.
Figure 1
– Simplified MT3620 SoC Block Diagram
Further differentiators of the MT3620 device are its built-in Pluton security subsystem (with dedicated CM4F
core) for secure boot and secure system operation, its dual-band 802.11 a/b/g/n Wi-Fi connectivity, as well
as integration of on-chip PMU, RTC plus FLASH and SRAM memory. Wi-Fi based OTA firmware and user
application updates (using certificate-based authentication) are hosted by Microsoft for the device lifetime
The Cortex-A7 application processor runs Microsoft
’s Azure Sphere Secure OS. Custom user applications
are developed in C using Microsoft
’s Visual Studio IDE, which includes user-friendly debugging features
such as single-step execution, breakpoints and watch-points (supported via a dedicated service UART)
The module allows easy design migration and end-product enhancements. By integrating all necessary
support and RF front end circuitry onto a small 33 mm x 22 mm module, Avnet has reduced the design time
for implementing Sphere-based solutions. Developers can leverage the module
’s wireless regulatory
certifications (pending) for their end product, saving considerable certification costs and testing time.
The Avnet Azure Sphere MT3620 chip module has a
33mm x 22mm form-factor, with
66 pad castellated
“stamp-hole” footprints. It has an on board chip antenna (Pulse W3006) with a 26MHz crystal oscillator.
Microsoft Visual Studio IDE is used for software development of applications that target this Azure Sphere
MT3620 Module. Instructions for installing this Integrated Development Environmen
t, as well as it’s Azure
Sphere SDK companion application and necessary drivers, are detailed (with examples) in the User Guide
for Avnet’s Azure MT3620 Sphere Starter Kit
