Description

The pico-ice is a small, low cost board with the Raspberry Pi Pico processor (RP2040) and a Lattice Semiconductor iCE40UP5K FPGA. The board features independent flash for the FPGA and RP2040, low power SSRAM, a couple of pushbuttons and a 3 color LED with all FPGA and RP2040 pins brought out to easy to use 0.1” header pins (arranged as PMOD’s) for fast prototyping.

Features

RaspberryPi RP2040 processor
Lattice UltraPlus ICE40UP5K FPGA with 5.3K LUTs, 1Mb SPRAM, 120Kb DPRAM, 8 Multipliers
ALL RP2040 and 32 FPGA GPIO on 0.1” headers
4MB SPI Flash
8MB low power qSPI SRAM
RGB LED, shared between the RP2040 and FPGA
2 pushbuttons, 1 dedicated and 1 primarily for processor reset during development but can be repurposed for user applications when not used for reset
On board 3.3V and 1.2V Regulators, can supply 3.3V to your project
Open source schematic and layout using KiCAD design tools
4 layer board with a solid ground plane for good signal integrity

Board and Firmware Features

FPGA clock supplied by the RP2040, easy to program FPGA clock under SW control
RP2040 can program the FPGA and also provides a pass through UART function
Examples for communicating to the FPGA over SPI
Support for ultra low power sleeep mode: can shut down the RP2040 and FPGA while keeping the SRAM powered