# ATmega328P Minimal Board ## Description ATmega328P microcontroller schematic with recommended power decoupling, reset circuit, 16 MHz crystal clock, and ISP/UART breakout support. ## Project Details - **Owner:** pcbcloner - **Created:** 5/30/2026 - **Last Updated:** 6/1/2026 - **Visibility:** Public ## Key Components ### D1 — [ESD601DPYRQ1](https://www.flux.ai/adrian95/esd601dpyrq1~jxk.md) - Manufacturer Name: Texas Instruments - Role: Protection - Part Type: Diode - Datasheet URL: https://www.ti.com/lit/ds/symlink/esd601-q1.pdf?ts=1731602930370 - Manufacturer Part Number: ESD601DPYRQ1 - Role Details: Low-capacitance RF ESD diode from LTE antenna feed to ground. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] ### D2 — [SS34](https://www.flux.ai/collinsemasi/ss34~qf.md) - Role: Protection - Manufacturer Part Number: SS34 - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5335/SMASS340000S34.pdf - Role Details: 3A Schottky input protection between USB VBUS and protected 5V rail. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Manufacturer Name: NextGen Components Inc **Pins:** - A [pin 2] - C [pin 1] ### F1 — [0805L110WR](https://www.flux.ai/adrian95/0805l110wr~h3i.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 0805L110WR - Role: Protection - Part Type: Fuse - Datasheet URL: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=3b1fa5dc-24aa-4363-b543-edb057c2fffa&filename=littelfuse_ptc_0805l_datasheet.pdf - Role Details: 1.1A hold PTC on USB-C VBUS; note peak cellular bursts may require higher hold-current production alternative. - Manufacturer Name: Littelfuse Inc. **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [TSW-103-07-G-D](https://www.flux.ai/adrian95/tsw-103-07-g-d~6gs.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://suddendocs.samtec.com/prints/tsw-xxx-xx-x-x-xx-xxx-footprint.pdf - Part Type: Connector - Manufacturer Name: Samtec Inc. - Manufacturer Part Number: TSW-103-07-G-D - Role: Connector - Role Details: AVR ISP header carrying MISO, VCC, SCK, MOSI, RESET, and GND. **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J2 — [TSW-106-07-G-S](https://www.flux.ai/adrian95/tsw-106-07-g-s~giw.md) - Connector Pitch: 2.54mm - Role Details: 6-pin breakout for VCC, GND, RXD, TXD, RESET, and one spare GPIO. - Manufacturer Name: Samtec - Part Type: Connector - Manufacturer Part Number: TSW-106-07-G-S - Connector Gender: Male - Connector Type: Headers and Wire Housings - Connector Positions: 6 - Role: Connector - Datasheet URL: https://suddendocs.samtec.com/catalog_english/tsw_th.pdf - Connector Rows: 1 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 01 [pin 01] - 02 [pin 02] - 03 [pin 03] - 04 [pin 04] - 05 [pin 05] - 06 [pin 06] ### J3 — [SMA-J-P-H-ST-EM1](https://www.flux.ai/jecstronic/sma-j-p-h-st-em1~0a1.md) - Role: Antenna Connector - Datasheet URL: http://suddendocs.samtec.com/catalog_english/sma.pdf - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Samtec Inc. - Manufacturer Part Number: SMA-J-P-H-ST-EM1 - Role Details: Board-edge SMA connector for BG95 LTE main antenna, route as 50 ohm RF trace. **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### J4 — [7111S2015X02LF](https://www.flux.ai/cherepanyadima/7111s2015x02lf~ky.md) - Mount: Surface Mount - Manufacturer Name: Amphenol ICC - Role Details: Nano-SIM holder for BG95 1.8V USIM interface. - Part Type: Connector - Manufacturer Part Number: 7111S2015X02LF - Compliance: Lead Free - Role: SIM Connector - Datasheet URL: https://www.amphenol-cs.com/media/wysiwyg/files/documentation/datasheet/inputoutput/io_smartcard_ss06ss10series.pdf **Pins:** - C1 [pin 1] - C2 [pin 2] - C3 [pin 3] - C5 [pin 5] - C6 [pin 6] - C7 [pin 7] ### J5 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a~im9.md) - Manufacturer Name: GCT - Manufacturer Name: GCT - Symbol Style: parametric-v1 - Role Details: USB-C sink power input; VBUS feeds protected 5V rail, CC pins use 5.1k pull-downs. - Manufacturer Part Number: USB4105-GF-A - Datasheet URL: https://gct.co/files/specs/usb4105-spec.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role: Power Connector - Part Type: USB C **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1_B12] - GND__1 [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHELL_GND [pin SH1] - SHELL_GND__1 [pin SH2] - SHELL_GND__2 [pin SH3] - SHELL_GND__3 [pin SH4] - VBUS [pin A4_B9] - VBUS__1 [pin B4_A9] ### J6 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p~u6.md) - Datasheet URL: https://www.lcsc.com/datasheet/C557651.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=E1BYV1AHFgUMXgFVQ1AMU1JVQFReXgIATwJfA10DFVkxVlNRT1dXXlVTQ1hbUjsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Manufacturer Part Number: XY301V-A-5.0-2P - Role Details: Primary 5 V field supply input sized for LTE-M peak current budget; recommended 5 V / 3 A adapter. - Role: Power Input - Manufacturer Name: Ningbo Xinlaiya Elec. - Part Type: Connector **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J7 — [TSW-106-07-G-S](https://www.flux.ai/adrian95/tsw-106-07-g-s~giw.md) - Manufacturer Name: Samtec - Datasheet URL: https://suddendocs.samtec.com/catalog_english/tsw_th.pdf - Manufacturer Part Number: TSW-106-07-G-S - Part Type: Connector - Connector Rows: 1 - Connector Type: Headers and Wire Housings - License: https://creativecommons.org/licenses/by/4.0/ - Connector Gender: Male - Connector Positions: 6 - Connector Pitch: 2.54mm **Pins:** - 01 [pin 01] - 02 [pin 02] - 03 [pin 03] - 04 [pin 04] - 05 [pin 05] - 06 [pin 06] ### J8 — [TSW-106-07-G-S](https://www.flux.ai/adrian95/tsw-106-07-g-s~giw.md) - Connector Positions: 6 - Connector Pitch: 2.54mm - Manufacturer Name: Samtec - Datasheet URL: https://suddendocs.samtec.com/catalog_english/tsw_th.pdf - Manufacturer Part Number: TSW-106-07-G-S - Part Type: Connector - Connector Rows: 1 - License: https://creativecommons.org/licenses/by/4.0/ - Connector Gender: Male - Connector Type: Headers and Wire Housings **Pins:** - 01 [pin 01] - 02 [pin 02] - 03 [pin 03] - 04 [pin 04] - 05 [pin 05] - 06 [pin 06] ### J9 — [HR911105A](https://www.flux.ai/jecstronic/hr911105a~ae9.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811141815_HANRUN-Zhongshan-HanRun-Elec-HR911105A_C12074.pdf - Part Type: Connector - Manufacturer Part Number: HR911105A - Manufacturer Name: HANRUN - Role: RJ45 MagJack - Role Details: 10/100BASE-T RJ45 connector with integrated magnetics for W5500 Ethernet PHY. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~ [pin 2] - ~ [pin 6] - ~ [pin 5] - ~ [pin 11] - ~ [pin 12] - ~ [pin 8] - ~ [pin 1] - ~ [pin 4] - ~ [pin 9] - ~ [pin 3] - ~ [pin 10] - SHIELD [pin 15] - SHIELD [pin 16] ### S1 — [PTS636 SM43J SMTR LFS](https://www.flux.ai/jharwinbarrozo/pts636-sm43j-smtr-lfs~6r0.md) - Manufacturer Name: C&K - Part Type: Switch - Manufacturer Part Number: PTS636 SM43J SMTR LFS - Datasheet URL: https://www.ckswitches.com/media/2779/pts636.pdf - Role Details: Momentary switch pulls RESET low for manual reset. - Role: Switching **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [ATMEGA328P-MU](https://www.flux.ai/vasy_skral/atmega328p-mu~wrm.md) - Role Details: Main 8-bit AVR MCU with 16 MHz external crystal, ISP programming, and UART breakout. - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/ATmega48A-PA-88A-PA-168A-PA-328-P-DS-DS40002061B.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Microchip - Role: Microcontroller - Manufacturer Part Number: ATMEGA328P-MU - Part Type: Microcontroller - Symbol Style: Parametric **Pins:** - ~RESET~/PC6 [pin 29] - ADC6 [pin 19] - ADC7 [pin 22] - AREF [pin 20] - AVCC [pin 18] - GND [pin 5] - GND [pin 33] - GND [pin 3] - GND [pin 21] - PB0 [pin 12] - PB1 [pin 13] - PB2 [pin 14] - PB3 [pin 15] - PB4 [pin 16] - PB5 [pin 17] - PC0 [pin 23] - PC1 [pin 24] - PC2 [pin 25] - PC3 [pin 26] - PC4 [pin 27] - PC5 [pin 28] - PD0 [pin 30] - PD1 [pin 31] - PD2 [pin 32] - PD3 [pin 1] - PD4 [pin 2] - PD5 [pin 9] - PD6 [pin 10] - PD7 [pin 11] - VCC [pin 6] - VCC [pin 4] - XTAL1/PB6 [pin 7] - XTAL2/PB7 [pin 8] ### U2 — [BG95M3LA-64-SGNS](https://www.flux.ai/lcsc/bg95m3la-64-sgns~1znm.md) - Symbol Style: parametric-v1 - Part Type: 2G/3G/4G/5G Modules - Role: Cellular Modem - Package or Case Code: LPWA-MODULE-SMD_L23.6-W19.9-P1.10-BG95-M1 - JLCPCB Part Class: Extended Part - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/7133/Quectel_BG95_Series_LPWA_Specification_V2.2.pdf - LCSC Part Number: C2960993 - Role Details: Quectel BG95-M3 LTE-M/NB-IoT modem; VBAT 3.3-4.3V typ 3.8V, UART to ATmega through level shifter, RF to SMA. - Manufacturer Part Number: BG95M3LA-64-SGNS - Manufacturer Name: Quectel(移远) **Pins:** - ADC0 [pin 24] - ADC1 [pin 2] - ANT_GNSS [pin 49] - ANT_MAIN [pin 60] - ANT_WIFI [pin 56] - AP_READY [pin 19] - DBG_RXD [pin 22] - DBG_TXD [pin 23] - GND [pin 73] - GND [pin 68] - GND [pin 71] - GND [pin 101] - GND [pin 67] - GND [pin 50] - GND [pin 100] - GND [pin 91] - GND [pin 79] - GND [pin 70] - GND [pin 102] - GND [pin 58] - GND [pin 80] - GND [pin 82] - GND [pin 48] - GND [pin 69] - GND [pin 31] - GND [pin 62] - GND [pin 74] - GND [pin 3] - GND [pin 89] - GND [pin 90] - GND [pin 54] - GND [pin 55] - GND [pin 81] - GND [pin 61] - GND [pin 59] - GND [pin 72] - GNSS_LAN_EN [pin 51] - GNSS_RXD [pin 28] - GNSS_TXD [pin 27] - GPIO1 [pin 25] - GPIO2 [pin 26] - GPIO3 [pin 64] - GPIO4 [pin 65] - GPIO5 [pin 66] - GPIO6 [pin 85] - GPIO7 [pin 86] - GPIO8 [pin 87] - GPIO9 [pin 88] - GRFC1 [pin 83] - GRFC2 [pin 84] - I2C_SCL [pin 40] - I2C_SDA [pin 41] - MAIN_CTS [pin 36] - MAIN_DCD [pin 38] - MAIN_DTR [pin 30] - MAIN_RI [pin 39] - MAIN_RTS [pin 37] - MAIN_RXD [pin 34] - MAIN_TXD [pin 35] - NET_STATUS [pin 21] - PCM_CLK [pin 4] - PCM_DIN [pin 6] - PCM_DOUT [pin 7] - PCM_SYNC [pin 5] - PON_TRIG [pin 96] - PSM_IND [pin 1] - PWRKEY [pin 15] - RESERVED [pin 63] - RESERVED [pin 13] - RESERVED [pin 11] - RESERVED [pin 78] - RESERVED [pin 98] - RESERVED [pin 92] - RESERVED [pin 93] - RESERVED [pin 14] - RESERVED [pin 12] - RESERVED [pin 97] - RESERVED [pin 16] - RESERVED [pin 77] - RESERVED [pin 76] - RESERVED [pin 57] - RESERVED [pin 94] - RESERVED [pin 99] - RESERVED [pin 95] - RESET_N [pin 17] - STATUS [pin 20] - USB_BOOT [pin 75] - USB_DM [pin 10] - USB_DP [pin 9] - USB_VBUS [pin 8] - USIM_CLK [pin 46] - USIM_DATA [pin 45] - USIM_DET [pin 42] - USIM_GND [pin 47] - USIM_RST [pin 44] - USIM_VDD [pin 43] - VBAT_BB [pin 33] - VBAT_BB [pin 32] - VBAT_RF [pin 52] - VBAT_RF [pin 53] - VDD_EXT [pin 29] - W_DISABLE [pin 18] ### U3 — [LMR33630ADDA](https://www.flux.ai/cherepanyadima/lmr33630adda.md) - Role Details: 5V to 3.8V buck for BG95 VBAT rail; sized for cellular transmit burst current. - Part Type: Integrated Circuits - Datasheet URL: http://www.ti.com/lit/ds/symlink/lmr33630.pdf - Manufacturer Part Number: LMR33630ADDA - Role: Voltage Regulator - Manufacturer Name: Texas Instruments - Package or Case Code: TO **Pins:** - BOOT [pin 7] - EN [pin 3] - EP [pin 9] - FB [pin 5] - PG [pin 4] - PGND [pin 1] - SW [pin 8] - VCC [pin 6] - VIN [pin 2] ### U4 — [TXB0104D](https://www.flux.ai/kicad-part-library/txb0104d~t6j.md) - Datasheet URL: http://www.ti.com/lit/ds/symlink/txb0104.pdf - Manufacturer Name: Texas Instruments Inc. - Role Details: Four-channel translator: A side at BG95 VDD_EXT 1.8V, B side at ATmega VCC 5V for UART/control. - Role: Level Shifter - Package or Case Code: SOIC-14_3.9x8.7mm_P1.27mm - Manufacturer Part Number: TXB0104D **Pins:** - A1 [pin 2] - A2 [pin 3] - A3 [pin 4] - A4 [pin 5] - B1 [pin 13] - B2 [pin 12] - B3 [pin 11] - B4 [pin 10] - GND [pin 7] - NC [pin 9] - NC [pin 6] - OE [pin 8] - VCCA [pin 1] - VCCB [pin 14] ### U5 — [MCP2515-I-ST](https://www.flux.ai/jecstronic/mcp2515-i-st~b5u.md) - Role: CAN Controller - Part Type: Integrated Circuit - Manufacturer Name: Microchip - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP2515-Stand-Alone-CAN-Controller-with-SPI-20001801J.pdf - Manufacturer Part Number: MCP2515-I/ST - Role Details: SPI CAN controller connected to ATmega SPI; supports CAN 2.0B up to 1 Mb/s. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~CS [pin 18] - ~INT [pin 13] - ~RESET [pin 19] - ~RX0BF [pin 12] - ~RX1BF [pin 11] - ~TX0RTS [pin 4] - ~TX1RTS [pin 5] - ~TX2RTS [pin 7] - CLKOUT/SOF [pin 3] - NC [pin 6] - NC [pin 15] - OSC1 [pin 9] - OSC2 [pin 8] - RXCAN [pin 2] - SCK [pin 14] - SI [pin 16] - SO [pin 17] - TXCAN [pin 1] - VDD [pin 20] - VSS [pin 10] ### U6 — [MCP2562-E-SN](https://www.flux.ai/jecstronic/mcp2562-e-sn~qto.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: CANH/CANL physical layer for BMS/PCS CAN; VDD from 5 V, VIO from ATmega VCC. - Role: CAN Transceiver - Datasheet URL: http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en561044 - Manufacturer Name: Microchip - Part Type: Integrated Circuit - Manufacturer Part Number: MCP2562-E/SN **Pins:** - CANH [pin 7] - CANL [pin 6] - RXD [pin 4] - STBY [pin 8] - TXD [pin 1] - VDD [pin 3] - Vio [pin 5] - VSS [pin 2] ### U7 — [MAX485CSA+](https://www.flux.ai/adrian95/max485csaplus~p25.md) - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Role: RS485 Transceiver - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max1487-max491.pdf - Manufacturer Part Number: MAX485CSA+ - Role Details: Half-duplex RS485/Modbus RTU transceiver connected to ATmega GPIO/software UART. - Part Type: Integrated Circuit **Pins:** - ~RE [pin 2] - A [pin 6] - B [pin 7] - DE [pin 3] - DI [pin 4] - GND [pin 5] - RO [pin 1] - VCC [pin 8] ### U8 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1~zlq.md) - Role Details: 3.3 V rail for WIZ850io and level shifter A-side; load budget approx 250 mA peak. - Part Type: Integrated Circuit - Role: 3.3V Regulator - Manufacturer Name: Diodes Incorporated - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: AP2112K-3.3TRG1 - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] ### U9 — [W5500](https://www.flux.ai/vasy_skral/w5500~9ux.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: W5500 SPI Ethernet controller connected directly to ATmega SPI and RJ45 MagJack. - Datasheet URL: https://docs.wiznet.io/img/products/w5500/w5500_ds_v109e.pdf - Manufacturer Name: WIZnet - Symbol Style: parametric-v1 - Manufacturer Part Number: W5500 - Role: Ethernet Controller - Part Type: Integrated Circuit **Pins:** - ~INT [pin 36] - ~RST [pin 37] - ~SCS [pin 32] - 1V2O [pin 22] - ACTLED [pin 27] - AGND [pin 3] - AGND [pin 16] - AGND [pin 14] - AGND [pin 48] - AGND [pin 9] - AGND [pin 19] - AVDD [pin 21] - AVDD [pin 15] - AVDD [pin 8] - AVDD [pin 11] - AVDD [pin 4] - AVDD [pin 17] - DNC [pin 7] - DUPLED [pin 26] - EXRES1 [pin 10] - GND [pin 29] - LINKLED [pin 25] - MISO [pin 34] - MOSI [pin 35] - NC [pin 46] - NC [pin 12] - NC [pin 47] - NC [pin 13] - PMODE0 [pin 45] - PMODE1 [pin 44] - PMODE2 [pin 43] - RSVD [pin 23] - RSVD [pin 42] - RSVD [pin 38] - RSVD [pin 39] - RSVD [pin 40] - RSVD [pin 41] - RXN [pin 5] - RXP [pin 6] - SCLK [pin 33] - SPDLED [pin 24] - TOCAP [pin 20] - TXN [pin 1] - TXP [pin 2] - VBG [pin 18] - VDD [pin 28] - XI/CLKIN [pin 30] - XO [pin 31] ### X2 — [NX3225GA-25MHZ-STD-CRG-2](https://www.flux.ai/lcsc/nx3225ga-25mhz-std-crg-2~jt15.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C438901 - Package or Case Code: OSC-SMD_4P-L3.2-W2.5-BL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_NDK-NX3225GA-25MHZ-STD-CRG-2_C438901.pdf - Manufacturer Part Number: NX3225GA-25MHZ-STD-CRG-2 - Part Type: Crystals - Role Details: 25 MHz W5500 crystal reference. - Manufacturer Name: NDK - Product Info Url: https://lcsc.com/product-detail/SMD-Crystal-Resonators_NDK-NX3225GA-STD-CRG-2-25MHZ_C438901.html - Role: Clock **Pins:** - 1 [pin 1] - 3 [pin 3] - GND [pin 4] - GND [pin 2] ### Y1 — [NX5032GA-16MHZ-STD-CSU-2](https://www.flux.ai/lcsc/nx5032ga-16mhz-std-csu-2~64rh.md) - Manufacturer Name: NDK - Role Details: 16 MHz two-pin crystal connected between XTAL1 and XTAL2. - Part Type: Crystals - Manufacturer Part Number: NX5032GA-16MHZ-STD-CSU-2 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_NDK-NX5032GA-16MHZ-STD-CSU-2_C485370.pdf - Product Info Url: https://lcsc.com/product-detail/SMD-Crystal-Resonators_NDK-NX5032GA-16MHZ-STD-CSU-2_C485370.html - LCSC Part Number: C485370 - JLCPCB Part Class: Extended Part - Role: Signal Generation - Package or Case Code: CRYSTAL-SMD_L5.0-W3.2-1 **Pins:** - 1 [pin 1] - 2 [pin 2] ### Y2 — [NX5032GA-16MHZ-STD-CSU-2](https://www.flux.ai/lcsc/nx5032ga-16mhz-std-csu-2~64rh.md) - LCSC Part Number: C485370 - JLCPCB Part Class: Extended Part - Package or Case Code: CRYSTAL-SMD_L5.0-W3.2-1 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_NDK-NX5032GA-16MHZ-STD-CSU-2_C485370.pdf - Manufacturer Part Number: NX5032GA-16MHZ-STD-CSU-2 - Product Info Url: https://lcsc.com/product-detail/SMD-Crystal-Resonators_NDK-NX5032GA-16MHZ-STD-CSU-2_C485370.html - Part Type: Crystals - Manufacturer Name: NDK **Pins:** - 1 [pin 1] - 2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/pcbcloner/atmega328p-minimal-board~5i](https://www.flux.ai/pcbcloner/atmega328p-minimal-board~5i).* --- *Generated from [https://www.flux.ai/pcbcloner/atmega328p-minimal-board~5i](https://www.flux.ai/pcbcloner/atmega328p-minimal-board~5i)*