iCEBreaker Bitsy

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iCEBreaker Bitsy is the smaller but just-as-capable sibling to iCEBreaker. At just 36x18mm, it is compatible with the Teensy form-factor and can be easily embedded into any project.

Features

• iCE40UP5K in QFN48 (SG48) package
  • PLL, two SPI and two I2C hard IPs
• 128M (16MiB) DDR- and QPI-capable Flash Memory
• 64M (8MiB) QPI-capable Pseudo-SRAM
• USB-C interface (comes preloaded with a RISC-V soft-core USB bootloader)
• RGB LED connected to 3x 24mA hard PWM IP pins
• Two user LEDs (one shared with RAM-CS)
• Status LED for CDONE
• 12MHz external clock (on PLL GBIN)
• One user button
• Supply rails: 3.3V and 1.2V
• FPGA SPI/programming header
  • 4 pins for config (SDI, SDO, SCK, CS)
  • 2 extra GPIO pins for QSPI/QPI
  • CDONE, CRESET, 3.3V, and GND
• Teensy form-factor compatible
• Compatible with Feather ecosystem using a Teensy 3.x Feather Adapter
• Castellated edges and single-side-load for easy module integration

Changelog

v1.1c (2021-06-28)

• Added solder pads for USB-C SBU and CC pins
• Improved back side silkscreen

v1.1b (2020-10-19)

• Changed board dimensions to metric instead of imperial (36x18mm)
• Added top-side silkscreen labels
• Enlarged USB-C solder paste openings

v1.1a (2020-08-05)

• Switched to WSON 6x5mm flash to accommodate through-hole programming header
• Improved silkscreen

v1.0a (2020-06-10)

• Complete redesign
• Pinout/dimensions now Teensy-compatible
• Moved Pseudo-SRAM to the top, populate it by default