2 layers102 × 52 mm
2 layers66.9 × 64 mm
Megaflash
ThomasFok/MegaFlash20MegaFlash for Apple IIc/IIc+ computer
- Size
- 66.9 × 64 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 68
- Pads
- 206
- Tracks, vias
- 687, 155
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 29 Mar 2025
- Updated
- 25 Oct 2026
Overview
Megaflash is an open-source printed circuit board by ThomasFok, from the ThomasFok/MegaFlash repository on GitHub, published under the MIT licence. It is a 2-layer board of 66.9 × 64 mm with 19 parts on 68 nets, routed with 687 tracks and 155 vias.
It is built around the W25Q01JVZEIQ, AMS1117-3.3 and SS12. Its parts include 9 capacitors, 6 ICs, 2 diodes and 1 connector. It belongs with the RP2040 and FPGA and CPLD boards of this library.
Main components
3
W25Q01JVZEIQ
WSON-8-EP(8x6)-40℃~+85℃ 100,000 cycles 133MHz 150ms@(64KB) 1Gbit 2.7V~3.6V 20 Years 3.5ms SPI WSON-8-EP(8x6) NOR FLASH ROHSWinbond ElecNOR FLASH
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
SS12
SMA(DO-214AC)Schottky Diodeshongjiacheng
README
kicad/rev1.0a/README.mdDifferences between Rev 1.0A and 1.0 PCB
- The 3.3V voltage regulator is removed. The bus transceiver is powered by Pico board.
- GPIO 8 and 9 of Pico (reserved for A2 and A3 address lines) are grounded.
- The shape of the board is rectangular.
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C6, C7, C8, C9 |
| 2 | 22uF | Capacitor_Tantalum_SMD:CP_EIA-3528-12_Kemet-T | C4, C5 |
| 2 | SS12 | Diode_SMD:D_SMA | D1, D2 |
| 2 | W25Q01JVZE | Package_SON:WSON-8-1EP_8x6mm_P1.27mm_EP3.4x4.3mm | U5, U6 |
| 1 | 47k | Resistor_SMD:R_Array_Convex_4x0603 | RN1 |
| 1 | 74LVCH16T245DLR | Package_SO:SSOP-48_7.5x15.9mm_P0.635mm | U1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | EXPSLOT | misc:PinHeader_2x17_P2.54mm_Vertical_Mirror | J1 |
| 1 | GAL16V8 | Package_LCC:PLCC-20_SMD-Socket | U2 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_NO_LABEL_NO_DEBUG | U4 |
Questions
How big is the Megaflash PCB?
It measures 66.9 × 64 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Megaflash use?
19 parts, built around the W25Q01JVZEIQ, AMS1117-3.3 and SS12. 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 Megaflash KiCad files?
From the ThomasFok/MegaFlash repository on GitHub, at the commit this page was made from: the board is kicad/rev1.0/megaflash.kicad_pcb and its schematic kicad/rev1.0/megaflash.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Megaflash design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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