2 layers68.5 × 53.3 mm
2 layers101.5 × 53.3 mm
Arduino Mega replacement based on Microchip SAMC21
- Size
- 101.5 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 115
- Pads
- 385
- Tracks, vias
- 1,238, 160
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20210424)
- Created
- 24 Jul 2020
- Updated
- 4 May 2021
Overview
Mega is an open-source printed circuit board by fortytwosystems, from the fortytwosystems/Mega repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 101.5 × 53.3 mm with 81 parts on 115 nets, routed with 1,238 tracks and 160 vias.
It is built around the LMV358, FT231XQ-R and LP2985-33DBV, with the USBLC6-2SC6, DMP3098L and MF-MSMF050-2 among its other parts. Its parts include 29 capacitors, 13 resistors, 12 connectors, 6 ICs and 5 diodes. It belongs with the SAM D and SAM boards of this library.
Main components
7
LMV358
SOP-8-40℃~+125℃ 10pA 10pA 1MHz 2 2.5V~5.5V 20mA 20nV/√Hz@10kHz 2uV/℃ 40uA 5mV 600V/ms 65dB EMI filtering/RF suppression Rail-to-Rail Input, Rail-to-Rail Output SOP-8 Operational Amplifier ROHSTECH PUBLICOperational Amplifier
FT231XQ-R
QFN-20-EP(4x4)-40℃~+85℃ 125uA 3.3V~5V 8mA USB 2.0 USB to UART QFN-20-EP(4x4) USB Converters ROHSFTDIUSB Converters
LP2985-33DBV
SOT-23-5-40℃~+125℃@(Tj) 1 150mA 16V 3.3V 30uVrms 45dB@(1kHz) 575mV@(150mA) 850uA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control、Noise bypass terminal Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
DMP3098L
SOT-23-55℃~+150℃ 1 P-Channel 1.08W 120mΩ@4.5V 147pF 2.1V 210pF 3.8A 30V 336pF 8nC@4.5V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
MF-MSMF050-2
1812-40℃~+85℃ 100A 150mΩ 15V 1A 1Ω 3.2mm 5.4mm 500mA 1812 Resettable Fuses ROHSBournsResettable Fuses
PJ-202A
插件-25℃~+85℃ 2.5A 24V 2mm 6.5mm DC Power Jack Right Angle 插件 DC Power Connectors ROHSCUIDC Power Connectors
Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C9, C10, C11, C15, C18, C19, C20, C23, C24, C25, C27, C28, C30 |
| 6 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5, H6 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R2, R10, R11, R12, R13 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R3, R4, R5 |
| 3 | 330r | Resistor_SMD:R_0603_1608Metric | R1, R8, R9 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric | C8, C29 |
| 2 | 15pF | Capacitor_SMD:C_0603_1608Metric | C2, C4 |
| 2 | 27r | Resistor_SMD:R_0603_1608Metric | R6, R7 |
| 2 | 470r | Resistor_SMD:R_0603_1608Metric | FB1, FB2 |
| 2 | 47pF | Capacitor_SMD:C_0603_1608Metric | C16, C17 |
| 2 | 47uF | Capacitor_SMD:CP_Elec_6.3x5.4 | C21, C22 |
| 2 | DIGITAL-LOW | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J7, J12 |
| 2 | Fiducial | Fiducial:Fiducial_0.75mm_Mask1.5mm | FID1, FID2 |
| 2 | YELLOW | LED_SMD:LED_0603_1608Metric | D1, D2 |
| 2 | YLW | LED_SMD:LED_0603_1608Metric | D3, D4 |
| 1 | 0.01uF | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 100pF | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C31 |
| 1 | 2.2uF | Capacitor_SMD:C_0805_2012Metric | C26 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_MicroCrystal_CC7V-T1A-2Pin_3.2x1.5mm | Y1 |
| 1 | 4.7uF | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C14 |
| 1 | ANALOG-HIGH | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J10 |
| 1 | ANALOG-LOW | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J5 |
| 1 | ATSAMC21N | Package_QFP:TQFP-100_14x14mm_P0.5mm | U1 |
| 1 | Conn_02x18_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x18_P2.54mm_Vertical | J11 |
| 1 | DIGITAL-MID | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J6 |
| 1 | DMP3098L | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | EXTRA | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | FT231XQ | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U4 |
| 1 | ICSP | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | JTAG | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | J1 |
| 1 | LMV358 | Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm | U2 |
| 1 | LP2985-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U6 |
| 1 | M7 | Diode_SMD:D_SMA | D5 |
| 1 | MF-MSMF050-2 | Fuse:Fuse_1812_4532Metric | F1 |
| 1 | NCP1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | PJ-202A | FortyTwoLabs:Barrel-Jack-PJ-202A | J9 |
| 1 | POWER | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J2 |
| 1 | RESET-EN | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | SW_SPST | FortyTwoLabs:Button-CK-PTS525 | SW1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U3 |
| 1 | USB_B | FortyTwoLabs:USB-B-Amphenol-61729-1011BLF | J8 |
Questions
How big is the Mega PCB?
It measures 101.5 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mega use?
81 parts, built around the LMV358, FT231XQ-R, LP2985-33DBV and USBLC6-2SC6. 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 Mega KiCad files?
From the fortytwosystems/Mega repository on GitHub, at the commit this page was made from: the board is Mega.kicad_pcb and its schematic Mega.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mega design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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