Thursday, February 29, 2024
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Espressif Announces the 
Release of ESP32-S2 Secure Wi-Fi MCU

Espressif announces the release of the 
ESP32-S2 Secure Wi-Fi MCU, which is a highly integrated, low-power, 2.4 GHz Wi-Fi Microcontroller SoC supporting Wi-Fi HT40 and 43 GPIOs. Based on Xtensa® single-core 32-bit LX7 processor, ESP32-S2 can be clocked at up to 240 MHz.

ESP32-S2 is a highly integrated, low-power, 2.4 GHz Wi-Fi Microcontroller SoC supporting Wi-Fi HT40 and 43 GPIOs. Based on Xtensa® single-core 32-bit LX7 processor, it can be clocked at up to 240 MHz.

Features of ESP32-S2 Secure Wi-Fi MCU

CPU and Memory

  • Xtensa® single-core 32-bit LX7 microcontroller
  • 7-stage pipeline
  • Clock frequency of up to 240 MHz
  • Ultra-low-power co-processor
  • 320 kB SRAM, 128 kB ROM, 16 KB RTC memory
  • External SPIRAM (128 MB total) support
  • Up to 1 GB of external flash support
  • Separate instruction and data cache

Connectivity

  • Wi-Fi 802.11 b/g/n
  • 1×1 transmit and receive
  • HT40 support with data rate up to 150 Mbps
  • Support for TCP/IP networking, ESP-MESH networking, TLS 1.0, 1.1 and 1.2 and other networking protocols over Wi-Fi
  • Support Time-of-Flight (TOF) measurements with normal Wi-Fi packets

IO Peripherals

  • 43 programmable GPIOs
  • 14 capacitive touch sensing IOs
  • Standard peripherals including SPI, I2C, I2S, UART, ADC/DAC and PWM
  • LCD (8-bit parallel RGB/8080/6800) interface and also support for 16/24-bit parallel
  • Camera interface supports 8 or 16-bit DVP image sensor, with clock frequency of up to 40 MHz
  • Full speed USB OTG support

Security

  • RSA-3072-based trusted application boot
  • AES256-XTS-based flash encryption to protect sensitive data at rest
  • 4096-bit eFUSE memory with 2048 bits available for application
  • Digital signature peripheral for secure storage of private keys and generation of RSA signatures

Optimal Power Consumption

ESP32-S2 supports fine resolution power control through a selection of clock frequency, duty cycle, Wi-Fi operating modes and individual power control of its internal components.

  • When Wi-Fi is enabled, the chip automatically powers on or off the RF transceiver only when needed, thereby reducing the overall power consumption of the system.
  • ULP co-processor with less than 5 uA idle mode and 24 uA at 1% duty-cycle current consumption. Improved Wi-Fi-connected and MCU-idle-mode power consumption.

Software

ESP32-S2 supports Espressif’s software development framework (ESP-IDF), which is a mature and production-ready platform, already used by millions of devices deployed in the field. Availability of common cloud connectivity agents and common product features shortens the time to market.

Applications

ESP32-S2 offers a universal Wi-Fi connectivity solution for a variety of applications, ranging from consumer to industrial use-cases. Furthermore, the computing power and memory expandability also makes it a suitable solution for simple ML-on-edge applications.

While it can support a large number of use-cases, the main target application use-cases are listed below:

Smart-Home Connectivity

Ranges from simple solutions like light bulbs, smart door-locks, smart sockets to white goods and kitchen appliances, over-the-top (OTT) devices and video streaming devices like security cameras

  • Supports Mesh Network, which can be applied to large-scale commercial lighting and smart-home network solutions.
  • Allows efficient interfacing with a wide range of sensors, which is suitable for the needs of different smart-home scenarios.

Battery-operated devices

Connected Wi-Fi sensors, Wi-Fi enabled toys, wearable and healthcare devices

  • Small 7 mm ⨉ 7 mm QFN package, which is ideal for wearable devices
  • Low power consumption, in hibernation mode, of less than 5 uA enables application in battery-operated devices or long standby-time devices
  • QSPI/OPI supports multiple flash/SRAM chips for flexible configuration of NVM and volatile data storage

Industrial automation

Industrial automation includes wireless control and robotics, smart lighting, HVAC control, which can ensure high-quality technology development and a long life-cycle for products.

  • With its high RF performance and security features, it can meet strict requirements and high standards of reliability and efficiency for electronic control.

Retail & Catering Applications 

POS machines and service robots

  • Advanced security features enable the protection of sensitive data on the chip and the flash device
  • Small form factor
  • With 14 highly sensitive touch sensors and an LCD interface, ESP32-S2 targets low-cost securely connected HMI devices, such as POS machines

Engineering Samples of ESP32-S2 beta will be available in June.

For more information, please contact Espressif Official Website.


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Harshvardhan Mishra

Hi, I'm Harshvardhan Mishra. Tech enthusiast and IT professional with a B.Tech in IT, PG Diploma in IoT from CDAC, and 6 years of industry experience. Founder of HVM Smart Solutions, blending technology for real-world solutions. As a passionate technical author, I simplify complex concepts for diverse audiences. Let's connect and explore the tech world together! If you want to help support me on my journey, consider sharing my articles, or Buy me a Coffee! Thank you for reading my blog! Happy learning! Linkedin

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Release of ESP32-S2 Secure Wi-Fi MCU

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