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icehat – Raspberry Pi ice40 Ultra FPGA hat #piday #raspberrypi @Raspberry_Pi

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Thanks to Drew for sharing – more info here.

What is it?

The icehat is a small (Raspberry Pi Zero-sized) board with a Lattice ice40 Ultra FPGA and three Digilent-compatible 8-bit PMOD receptacles.

  • Lattice iCE5LP4K-SG48 FPGA with
    • 3520 LUTs
    • 4 Multiplier/Accumulate blocks
    • 20x 4kb RAMs
    • OTP Non-volatile configuration memory
    • 1 PLL
    • 2 I2C cores
    • 2 SPI cores
    • 10kHz oscillator
    • 48MHz oscillator
    • 3 24ma OC LED drivers
  • single 5V supply from RPi Header
  • 3.3V 300ma regulator for FPGA I/O
  • 1.2V 300ma regulator for FPGA core
  • 4x Diagnostic LEDs (1 Configuration status, 3 FPGA user defined).
  • 3x 12-pin Digilent-style PMOD connectors with 8 FPGA I/O each and selectable supply voltage.
  • Dedicated SPI port between RPi and FPGA
  • I2S between RPi and FPGA

Read more.


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