2 layers24 × 18 mm
Usb2serial autovtg
znuh/usb2serial-autovtg
USB to serial converter with automatic target voltage detection, buffered IOs, 1.8V to 5V support and backflow current protection
38 parts9CC-BY-SA-4.0
2 layers
SAM21
jayadevakash/SAM21IoTHive
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 122
- Nets
- 114
- Pads
- 400
- Tracks, vias
- 1,740, 276
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 26 Jul 2019
- Updated
- 19 Aug 2019
Overview
SAM21 is an open-source printed circuit board by jayadevakash, from the jayadevakash/SAM21 repository on GitHub. It is a 2-layer board with 122 parts on 114 nets, routed with 1,740 tracks and 276 vias.
It is built around the ATSAMD21G18A-MU, 74LVC244 and ATECC608A-MAHDA-S, with the ESD5V3U2U-03F, BSS138 and DMP1045U among its other parts. Its parts include 43 resistors, 25 capacitors, 23 diodes, 8 connectors and 7 ICs. It belongs with the SAM D and SAM boards of this library.
Main components
8
ATSAMD21G18A-MU
QFN-48-EP(7x7)-40℃~+85℃ 1.62V~3.6V 10bit 12bit 256KB 32 Bit 32KB 38 48MHz ARM Cortex-M0+ Built-in FLASH QFN-48-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
74LVC244
TSSOP-20Buffers, Drivers, Receivers, TransceiversWuxi I-core Elec
ATECC608A-MAHDA-S
UDFN-8(2x3)-40℃~+85℃ 150nA 2V~5.5V ECC、SHA-256、AES-128 I2C UDFN-8(2x3) Security Verification / Encryption ICs ROHSMicrochip TechnologySecurity Verification / Encryption ICs
ESD5V3U2U-03F
SOTFL320kV ESD Ultra-Low Capacitance Uni-Directional TVS Diode ArrayInfineon TechnologiesUncategorised
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsDMP1045U
SOT-23-55℃~+150℃ 1 P-Channel 1.357nF 1.3W 12V 15.8nC@4.5V 1V 235pF 31mΩ@4.5V 5.2A 504pF P-Channel SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
ESD5Z3.3T1G
SOD-523-55℃~+125℃ 1 110pF 11A 14V 150W 200nA 3.3V 5V ESD IEC 61000-4-2、IEC 61000-4-4 Unidirectional SOD-523 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)ESD5Z5.0T1G
SOD-523174W@8/20us 18.6V 50nA 5V 6.2V 80pF 9.4A@8/20us ESD IEC 61000-4-2、IEC 61000-4-4 Unidirectional SOD-523 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
Parts
122| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100nF | Capacitor_SMD:C_0402_1005Metric | C6, C7, C8, C9, C10, C11, C12, C13, C14, C16, C23 |
| 11 | 330E | Resistor_SMD:R_0402_1005Metric | R3, R24, R25, R26, R27, R28, R29, R37, R38, R40, R41 |
| 10 | 100kE | Resistor_SMD:R_0402_1005Metric | R8, R9, R12, R13, R16, R22, R34, R36, R39, R43 |
| 10 | D_BAT30S | Package_TO_SOT_SMD:SOT-323_SC-70 | D8, D9, D10, D11, D12, D13, D16, D17, D18, D19 |
| 8 | 1kE | Resistor_SMD:R_0402_1005Metric | R4, R5, R6, R7, R15, R18, R35, R42 |
| 7 | 2u2F | Capacitor_SMD:C_0402_1005Metric | C3, C4, C5, C19, C22, C24, C25 |
| 6 | 4k7E | Resistor_SMD:R_0402_1005Metric | R21, R23, R30, R31, R32, R33 |
| 6 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q5, Q6, Q8, Q10 |
| 6 | LED | LED_SMD:LED_0402_1005Metric | D1, D2, D6, D7, D14, D15 |
| 5 | 22uF | Capacitor_SMD:C_0805_2012Metric | C15, C17, C18, C20, C21 |
| 5 | Conn_01x04_Male | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J4, J5, J6, J7, J8 |
| 4 | 4k7 | Resistor_SMD:R_0402_1005Metric | R10, R11, R19, R20 |
| 4 | DMP1045U | DMP1045U:SOT92P240X110-3N | D20, D21, D22, D23 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 10kE | Resistor_SMD:R_0402_1005Metric | R2, R14, R17 |
| 2 | 0.5A | Fuse:Fuse_0805_2012Metric | F1, F2 |
| 2 | 12pF | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_EVPBF | SW1, SW2 |
| 2 | XBEE | XBEE:XBEE | U5, U7 |
| 1 | 0E | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 32.768kHz | ECS-.327-12.5-34B-TR:XTAL_ECS-.327-12.5-34B-TR | Y1 |
| 1 | 629105150521 | microusb:microusb | J1 |
| 1 | 74lvc244 | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | AP1117-33 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | ATECC608A-MAHDA | UDFN-8:UDFN-8 | U9 |
| 1 | ATSAMD21G18A-MU | ATSAMD21G18A-MU:QFN50P700X700X90-49N | U1 |
| 1 | BAS3010 | Diode_SMD:D_SOD-323 | D3 |
| 1 | BLM18PG221SH1D | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | Conn_01x02_Male | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical_SMD | J2 |
| 1 | ESD5V3U2U-03F | Package_TO_SOT_SMD:SOT-723 | U3 |
| 1 | ESD5Z3.3T1G | Diode_SMD:D_SOD-523 | D5 |
| 1 | ESD5Z5.0T1G | Diode_SMD:D_SOD-523 | D4 |
Questions
What parts does the SAM21 use?
122 parts, built around the ATSAMD21G18A-MU, 74LVC244, ATECC608A-MAHDA-S and ESD5V3U2U-03F. 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 SAM21 KiCad files?
From the jayadevakash/SAM21 repository on GitHub, at the commit this page was made from: the board is SAM21/SAM21.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the SAM21 design in my own project?
Its repository states no licence, so its author keeps all rights: ask jayadevakash before reusing the design.
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