S200 Master STM32L476

master arm cortex st 

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The STM32L476 master module is a certified Rhomb.io module that includes a STM32L476 MCU, which is one of the ST Electronics ultra-low-power microcontrollers based on the high-performance ARM® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz. The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all ARM single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.


  • Industrial automation
  • Sensing
  • Audio processing
  • IoT

Module specification

The S200 Master Module - STM32L476 is a microcontroller of the STM32L4 series that performs an ARM Cortex-M4 with DSP instructions. This microcontroller can work in Ultra-low-power at 1.8 V, at 2.8 V or at full usage at 3.3 V depending which solder jumper is closed.

As stated above it is implemented a full set of DSP instructions so this microcontroller can be used as a signal processor too. Also this microcontroller implements a CRC calculation unit that can be used as a memory protection unit for security applications , a random generator unit and a DMA controller. It has up to 1 MB flash memory and a SRAM memory up to 128 KB.

The communications interfaces that we can find at S200 Master Module - STM32L476 are: USB and OTG, SPI, QSPI, I2C, UART, SAI, SDIO, CAN and SWPMI. All of them are included in the Master Module an can be used in a rhomb motherboard. Also this microcontroller counts with up to 6 ADC[0..5], 5 PWM[0..4], 2 capture signals, 1 compare (positive and negative) and 16 GPIOs [0..15].

This Master Module is also designed for all kind of IoT applications so it is implemented onboard a 1 wire memory for unique serial number, an I2C security IC for data encryptation and a QSPI memory up to 128 Mb.

"S200 Master Module - STM32L476"
MCU ARM Cortex-M4
Operating Voltage 1.8/2.8/3.3 V
Max. Operating Frequency 40 MHz
Flash Memory up to 1 MB
SRAM Memory 128 KB
Operating voltage 1.7 - 3.6 V
Onboard system oscillator 40 MHz
Onboard RTC oscillator 32.768 KHz
I2C 2
SDIO 4 data bits
Interrupt pins 4
PWM outputs 4
Analog Inputs 5
Digital I/O 76

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