The First Open Source RISC-V Microcontroller

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Hackaday reports that OnChip launched a Crowd Supply campaign:

mRISC-V: The First Open Source RISC-V Microcontroller

Now, this is finally changing. OnChip, a startup from a group of doctoral students at the Universidad Industrial de Santander in Colombia, have been working on mRISC-V, an open 32-bit microcontroller based on the RISC-V instruction set [..]

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Open-V Chip Specifications

  • Package
    • QFN-32
    • No other packages are planned for the first run
  • Processor
    • RISC-V ISA version 2.1
    • 1.2 V operation
  • Memory
    • 8 KB SRAM
  • Clock
    • 32 KHz – 160 MHz
    • Two PLLs, user-tunable with muxers and frequency dividers
    • includes all clocking and bias circuitry
  • Analog Signals
    • Two 10-bit ADC channels, each running at up to 10 MS/s
    • Two 12-bit DAC channels
  • Timers
    • One general-purpose 16-bit timer
    • One 16-bit watch dog timer (WDT)
  • General Purpose Input/Ouput
    • 16 programmable GPIO pins
    • two external interrupts
  • Interfaces
    • SDIO port (e.g., microSD)
    • Two SPI ports
    • I2C
    • UART
  • Programming and Testing
    • Built-in debug module for use with gdb and JTAG
    • Programmable PRBS-31/15/7 generator and checker for interconnect testing
    • Compatible with the Arduino IDE

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Open-V Dev Board Specifications

The dev board comes completely assembled.

  • USB 2.0 controller
  • 1.2 V and 3.3 V voltage regulators
  • Clock reference
  • Breadboard-compatible breakout header pins
  • microSD receptacle
  • Micro USB connector (power and data)
  • JTAG connector
  • 32 KB EEPROM
  • 32-pin QFN Open-V microcontroller
  • Dimensions: 55 mm x 30 mm (excluding USB receptacle)
The First Open Source RISC-V Microcontroller

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