2 layers100 × 54 mm
4 layers35.6 × 17.8 mm
Icebreaker bitsy
murkyshelf/fpga_dev_board2- Size
- 35.6 × 17.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 69
- Pads
- 381
- Tracks, vias
- 665, 73
- Pours
- 36
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 10 Jan 2026
- Updated
- 17 May 2026
Overview
Icebreaker bitsy is an open-source printed circuit board by murkyshelf, from the murkyshelf/fpga_dev_board repository on GitHub, published under the Apache-2.0 licence. It is a 4-layer board of 35.6 × 17.8 mm with 99 parts on 69 nets, routed with 665 tracks and 73 vias.
It is built around the ICE40UP5K-SG48I, TLV75512PDRV and TLV75533PDRV, with the USBLC6-2P6 and FM-B2020RGBA-HG among its other parts. Its parts include 43 connectors, 19 capacitors, 14 resistors, 6 ICs and 4 diodes. It belongs with the FPGA and CPLD boards of this library.
Main components
5
ICE40UP5K-SG48I
QFN-48-EP(7x7)-40℃~+100℃ 1.14V~1.26V 1171456bit 39 5280 660 iCE40 UltraPlus QFN-48-EP(7x7) Programmable Logic Device (CPLDs/FPGAs) ROHSLatticeProgrammable Logic Device (CPLDs/FPGAs)
TLV75512PDRV
WSON-6-EP(2x2)-40℃~+125℃@(Tj) 1 1.2V 33uA 46dB@(100kHz) 5.5V 500mA 71.5uVrms 780mV@(500mA) Fixed Positive Under Voltage Lockout、Over Current Protection、Soft Start、Enable、Thermal Shutdown WSON-6-EP(2x2) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsTLV75533PDRV
WSON-6-EP(2x2)-40℃~+125℃@(Tj) 1 238mV@(500mA) 25uA 3.3V 46dB@(100kHz) 5.5V 500mA 71.5uVrms Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control、Input under-voltage protection、Output discharge、Built-in soft-start Positive WSON-6-EP(2x2) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
FM-B2020RGBA-HG
SMD,2.1x2.1mm-30℃~+85℃ 110° 1mm 2.1mm 2.1mm B:460nm~480nm、R:615nm~630nm、G:515nm~540nm Common Anode R:1.6V~2.4V、G:2.4V~3.2V、B:2.4V~3.2V R:20mA、G:20mA、B:20mA R:30mcd~110mcd、G:90mcd~270mcd、B:12mcd~40mcd R:48mW、G:64mW、B:64mW SMD,2.1x2.1mm RGB LEDs ROHSFoshan NationStar OptoelectronicsRGB LEDs
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | pkl_dipol:C_0402 | C6, C7, C8, C9, C10, C11, C12, C14, C17 |
| 4 | 4u7 | pkl_dipol:C_0603 | C2, C3, C4, C5 |
| 4 | UP | pkl_pads:PAD_SMD_1x2.65_ROUNDED | P32, P33, P34, P35 |
| 3 | 10k | pkl_dipol:R_0402 | R7, R8, R10 |
| 3 | 1u | pkl_dipol:C_0402 | C1, C15, C18 |
| 3 | 2k2 | pkl_dipol:R_0402 | R11, R12, R13 |
| 3 | GND | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P24, P25, P26 |
| 2 | 10n | pkl_dipol:C_0402 | C13, C16 |
| 2 | 22E | pkl_dipol:R_0402 | R4, R5 |
| 2 | 3V3 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P27, P28 |
| 2 | 5k1 | pkl_dipol:R_0402 | R2, R3 |
| 2 | Jumper | pkl_jumpers:J_NC_0603_30 | JP5, JP6 |
| 2 | Jumper | pkl_jumpers:J_NC_0402_15 | JP2, JP3 |
| 1 | 0 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P0 |
| 1 | 1 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P1 |
| 1 | 10 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P10 |
| 1 | 100E | pkl_dipol:R_0402 | R14 |
| 1 | 10k | pkl_dipol:R_Array_Convex_4x0402 | R9 |
| 1 | 10u | pkl_dipol:C_0603 | C19 |
| 1 | 11 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P11 |
| 1 | 12 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P12 |
| 1 | 12MHz | pkl_misc:Oscillator_SMD_SCTF_S2DXX-4Pin_2.5x2.0mm | X1 |
| 1 | 13 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P13 |
| 1 | 14 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P14 |
| 1 | 15 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P15 |
| 1 | 16 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P16 |
| 1 | 17 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P17 |
| 1 | 18 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P18 |
| 1 | 19 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P19 |
| 1 | 1BitSquared | pkl_logos:null_Logo_SilkS_6.5mm | LOGO1 |
| 1 | 1M | pkl_dipol:R_0402 | R1 |
| 1 | 1k5 | pkl_dipol:R_0402 | R6 |
| 1 | 2 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P2 |
| 1 | 20 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P20 |
| 1 | 21 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P21 |
| 1 | 22 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P22 |
| 1 | 23 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P23 |
| 1 | 3 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P3 |
| 1 | 4 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P4 |
| 1 | 5 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P5 |
| 1 | 6 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P6 |
| 1 | 7 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P7 |
| 1 | 8 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P8 |
| 1 | 9 | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P9 |
| 1 | BLU | pkl_dipol:D_0603 | D3 |
| 1 | CDONE | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P30 |
| 1 | CRESET | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P31 |
| 1 | CS | pkl_pin_headers:Pin_Header_Straight_Round_1x01 | P36 |
| 1 | FM-B2020RGBA-HG | pkl_led:LED_TRI_2020 | D4 |
| 1 | GRN | pkl_dipol:D_0603 | D2 |
| 1 | ICE40UP5K-SG48 | pkl_housings_dfn_qfn:QFN-48-1EP_7x7mm_Pitch0.5mm | U6 |
| 1 | IO2 | pkl_pads:PAD_SMD_R_1x1 | P41 |
| 1 | IO3 | pkl_pads:PAD_SMD_R_1x1 | P40 |
| 1 | Jumper | pkl_jumpers:J_NC_0402_30 | JP4 |
| 1 | Jumper | pkl_jumpers:J_NC_0603_40 | JP1 |
| 1 | LY68L6400 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | MISO | pkl_pin_headers:Pin_Header_Straight_Round_1x01 | P38 |
| 1 | MOSI | pkl_pin_headers:Pin_Header_Straight_Round_1x01 | P39 |
| 1 | RED | pkl_dipol:D_0603 | D1 |
| 1 | SCK | pkl_pin_headers:Pin_Header_Straight_Round_1x01 | P37 |
| 1 | TACT | pkl_buttons_switches:SW_SPST_3x4x2.5 | SW1 |
| 1 | TLV75512PDRV | Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U3 |
| 1 | TLV75533PDRV | Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U2 |
| 1 | USBLC6-2 | pkl_housings_sot:SOT-666 | U1 |
| 1 | USB_C | pkl_connectors:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | VIN | pkl_pin_headers:Pin_Header_Straight_Round_1x01_Castellated | P29 |
| 1 | W25Q128JVxxM | Package_SON:WSON-8-1EP_6x5mm_P1.27mm_EP3.4x4.3mm | U5 |
The 95 most common of 99 parts.
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Questions
How big is the Icebreaker bitsy PCB?
It measures 35.6 × 17.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Icebreaker bitsy use?
99 parts, built around the ICE40UP5K-SG48I, TLV75512PDRV, TLV75533PDRV and USBLC6-2P6. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Icebreaker bitsy KiCad files?
From the murkyshelf/fpga_dev_board repository on GitHub, at the commit this page was made from: the board is refference_meterial/icebreaker-bitsy.kicad_pcb and its schematic pcb_files/fpga_dev_board/fpga_dev_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Icebreaker bitsy design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).