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2 layers50 × 52 mmBreakout tt06-qfn, the printed circuit board in 3D

The Tiny Tapeout chips are delivered on a breakout board that allows:

Size
50 × 52 mm
Copper layers
2
Thickness
1.6 mm
Parts
153
Nets
65
Pads
407
Tracks, vias
789, 145
Pours
1
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
7 Oct 2025
Updated
7 Oct 2025

Overview

Breakout tt06-qfn is an open-source printed circuit board by htfab, from the htfab/breakout-pcb-snapshot repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 50 × 52 mm with 153 parts on 65 nets, routed with 789 tracks and 145 vias.

It is built around the 24LC02BT-I/MC, RSP-122811-01 and NPTC202KFMS-RC. Its parts include 19 capacitors, 15 connectors, 6 resistors and 2 ICs. It belongs with the interfaces and adapters boards of this library.

Main components

3

README

README.md

Tiny Tapeout breakout PCBs

The Tiny Tapeout chips are delivered on a breakout board that allows:

  • the demo board to host and interact with the IC and its projects

  • easily moving the ASIC to other more specialized PCBs

The PCBs are keyed such that direction of insertion onto hosts is made clear.

TT03 QFN breakout

The breakout-tt03-qfn directory holds a QFN breakout suitable for TT02 and TT03 chips.

TT03 QFN

It provides access to the project inputs, outputs, select pins etc, though the naming on the PCB refers to the caravel mprj_io pin numbers.

The pin headers used up to this point have been dual entry (access from both top and bottom).

TT04 QFN breakout

The breakout-tt04-qfn directory holds a QFN breakout suitable for TT04 chips. To date, we've been using it with the TT03p5 trial run (hence the markings), though the pinout remains constant for TT04.

TT04 QFN

We've now moved to more easily sourced standard 100 mil pin headers, placed on the bottom of the PCB. Markings on top are Tiny Tapeout names of the pins (in0 is input 0, ot5 is output 5, etc).

FPGA ASIC simulation PCBs

Following the same footprints as the breakout boards, the ASIC simulation PCBs are circuits designed to allow for use of demo or custom boards while developing or awaiting the actual chips. A version was already produced for TT03 and a TT04-compatible version, with the extra I/O and dedicated clock/reset pins, is under development.

Parts

153
QtyValueFootprintReferences
53StitchingVia-0.4mmDrillflyingcarsfootprints:StitchingVia-0.4mmDrillSTITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1, STITCHB1 +37
30StitchingVia-0.3mmflyingcarsfootprints:StitchingVia-0.3mmSTITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1, STITCHM1 +14
12Jumper_2_Small_BridgedJumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mmJP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10, JP11, JP12
12U.FLpsysnapeda:SAMTEC_RSP-122811-01J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13
100.1ufCapacitor_SMD:C_0402_1005MetricC4, C5, C6, C7, C8, C9, C10, C11, C12, C13
9C_1u_0603_50VCapacitor_SMD:C_0603_1608MetricC1, C2, C3, C14, C15, C16, C17, C18, C19
5TestPoint_AltTestPoint:TestPoint_Keystone_5019_MinatureTP1, TP2, TP3, TP4, TP9
4TestPointTestPoint:TestPoint_Pad_D1.0mmTP5, TP6, TP7, TP8
3FiducialFiducial:Fiducial_1mm_Mask2mmFID1, FID2, FID3
20RResistor_SMD:R_0402_1005MetricR6, R7
20RResistor_SMD:R_1206_3216MetricR3, R4
21kResistor_SMD:R_0402_1005MetricR1, R2
2~TinyTapeout:FH-00148_PinSocket_2x20_P2.54mmCON1, CON2
124LC02Package_DFN_QFN:DFN-8-1EP_3x2mm_P0.5mm_EP1.75x1.45mmU2
1Conn_01x04Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_VerticalJ1
1LOGOflyingcarsfootprints:PsychoLogoSmallG***
1Openframe_QFN_TT06_REV2Package_DFN_QFN:QFN-64-1EP_9x9mm_P0.5mm_EP7.65x7.65mmU1
1TT_logoLogos:TT_logoTTLOGO

The 151 most common of 153 parts.

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Questions

How big is the Breakout tt06-qfn PCB?

It measures 50 × 52 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Breakout tt06-qfn use?

153 parts, built around the 24LC02BT-I/MC, RSP-122811-01 and NPTC202KFMS-RC. 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 Breakout tt06-qfn KiCad files?

From the htfab/breakout-pcb-snapshot repository on GitHub, at the commit this page was made from: the board is breakout-tt06-qfn/breakout-tt06-qfn.kicad_pcb and its schematic ASIC-simulator/tt03-fpga-ICE40UP5k/caravel-breakout-fpga-ICE40UP5K-TT3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Breakout tt06-qfn 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).