2 layers102.6 × 50.7 mm
Cassette interface
pmonta/retrocomputing
Board- and chip-level reproductions of classic computing devices
23 parts5
4 layers19.6 × 9.4 mm
Board- and chip-level reproductions of classic computing devices
- Size
- 19.6 × 9.4 mm
- Copper layers
- 4
- Thickness
- 1.57 mm
- Parts
- 24
- Nets
- 47
- Pads
- 153
- Tracks, vias
- 338, 58
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Mar 2020
- Updated
- 9 Apr 2020
Overview
Prom is an open-source printed circuit board by pmonta, from the pmonta/retrocomputing repository on GitHub. It is a 4-layer board of 19.6 × 9.4 mm with 24 parts on 47 nets, routed with 338 tracks and 58 vias.
It is built around the ICE40LP1K-CM36, 74LVC2G34GW and 74LVC2G125DP. Its parts include 11 ICs, 3 capacitors, 2 resistors and 1 connector. It belongs with the FPGA and CPLD boards of this library.
Main components
3
ICE40LP1K-CM36
UCBGA-36-40℃~+100℃ 1.14V~1.26V 1280 160 25 65536bit iCE40 LP UCBGA-36 Programmable Logic Device (CPLDs/FPGAs) ROHSLatticeProgrammable Logic Device (CPLDs/FPGAs)
74LVC2G34GW
SOT-363-40℃~+125℃ 1.65V~5.5V 2 2 2.5ns@3.3V,50pF 24mA 24mA 4uA 74LVC Power-off isolation、Level shifting Schmitt trigger Unidirectional SOT-363 Buffers, Drivers, Receivers, Transceivers ROHSMDDBuffers, Drivers, Receivers, Transceivers
74LVC2G125DP
TSSOP-8-40℃~+125℃ 1 1.65V~5.5V 1.9ns@5V,50pF 2 32mA 32mA 4uA 74LVC Schmitt trigger Tri-State Unidirectional TSSOP-8 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
README
README.mdretrocomputing
Board- and chip-level reproductions of classic computing devices
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | TestPoint_Alt | prom:test-point | TP1, TP2, TP3, TP4, TP5, TP6, TP7 |
| 5 | 74LVC2G34 | prom:DSBGA-6 | U3, U4, U5, U6, U7 |
| 3 | 1 uF | prom:0402 | C1, C2, C3 |
| 2 | 10k | prom:0402 | R1, R2 |
| 2 | 74LVC2G125 | prom:DSBGA-8 | U8, U9 |
| 1 | AT25DF041B | prom:WLCSP-8 | U11 |
| 1 | DIP16_pins | prom:flip-pins-DIP16 | J1 |
| 1 | ICE40LP1K-CM36 | prom:ucBGA-36 | U10 |
| 1 | TLV743P 1.2V | prom:X2SON | U2 |
| 1 | TLV743P 3.3V | prom:X2SON | U1 |
Questions
How big is the Prom PCB?
It measures 19.6 × 9.4 mm and has 4 copper layers, 1.57 mm thick.
What parts does the Prom use?
24 parts, built around the ICE40LP1K-CM36, 74LVC2G34GW and 74LVC2G125DP. 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 Prom KiCad files?
From the pmonta/retrocomputing repository on GitHub, at the commit this page was made from: the board is apple-1/chips/MMI-6301/kicad/prom.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Prom design in my own project?
Its repository states no licence, so its author keeps all rights: ask pmonta before reusing the design.
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