# LR2021 V4 MCU V1 ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** minhojiddin-technology-defence - **Created:** 7/17/2026 - **Last Updated:** 7/28/2026 - **Visibility:** Public ## Key Components ### D1 — RClamp1561PWQ - Part Type: Circuit Protection Devices - Manufacturer Part Number: RClamp1561PWQ - Manufacturer Name: Semtech - Datasheet URL: https://semtech.my.salesforce.com/sfc/p/E0000000JelG/a/RQ000004SGNh/2vmUBejw.i8is2SYUL8tRDEbRNZTGY2fCVX1TBXcc5U - Mount: Clamp **Pins:** - 1 [pin 1] - 2 [pin 2] ### D2 — RClamp1561PWQ - Mount: Clamp - Datasheet URL: https://semtech.my.salesforce.com/sfc/p/E0000000JelG/a/RQ000004SGNh/2vmUBejw.i8is2SYUL8tRDEbRNZTGY2fCVX1TBXcc5U - Manufacturer Part Number: RClamp1561PWQ - Manufacturer Name: Semtech - Part Type: Circuit Protection Devices **Pins:** - 1 [pin 1] - 2 [pin 2] ### D3 — [ESD351DPYR](https://www.flux.ai/lcsc/esd351dpyr~9wyz.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C1974929 - Package or Case Code: X1SON-2_L1.0-W0.6-P0.65-RD - Manufacturer Part Number: ESD351DPYR - Manufacturer Name: TI(德州仪器) - Part Type: TVS **Pins:** - A [pin 2] - K [pin 1] ### HF — [IPEX-4](https://www.flux.ai/lcsc/ipex-4~z2gx.md) - Manufacturer Name: Ziisor(致哲) - Part Type: RF Connectors / Coaxial Connectors - Package or Case Code: IPEX-SMD_4P-L1.8-W1.7-LS2.0 - Manufacturer Part Number: IPEX-4 - LCSC Part Number: C2987683 - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### IC1 — [LR2021IMLTRT](https://www.flux.ai/adrian95/lr2021imltrt.md) - Manufacturer Part Number: LR2021IMLTRT - Manufacturer Name: Semtech - Part Type: Integrated Circuits - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/15421313c1244a517811d7659655150716969c4094446b47f669b5910637d162.pdf - Symbol Style: parametric-v1 **Pins:** - ~{RESET} [pin 20] - BUSY [pin 25] - DIO10 [pin 8] - DIO11 [pin 7] - DIO5 [pin 19] - DIO6 [pin 18] - DIO7 [pin 11] - DIO8 [pin 10] - DIO9 [pin 9] - EP [pin 0] - GND [pin 30] - GND_DCC [pin 15] - LXA [pin 16] - LXB [pin 14] - MISO [pin 21] - MOSI [pin 22] - NSS [pin 24] - NTC [pin 3] - RFI_HF [pin 31] - RFI_LF [pin 29] - RFO_HF [pin 32] - RFO_LF1 [pin 28] - RFO_LF2 [pin 27] - SCK [pin 23] - VBAT [pin 17] - VDCC1 [pin 12] - VDCC2 [pin 26] - VPAX1 [pin 13] - VPAX2 [pin 2] - VR_PA [pin 1] - VTCXO/VNTC [pin 6] - XTA [pin 4] - XTB [pin 5] ### IC3 — [ESP32-C5HR8](https://www.flux.ai/adrian95/esp32-c5hr8~yqv.md) - Manufacturer Name: Espressif - Datasheet URL: https://docs.espressif.com/projects/esp-dev-kits/en/latest/esp32c5/esp-dev-kits-en-master-esp32c5.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP32-C5HR8 - Part Type: Integrated Circuits **Pins:** - ANT_2G [pin 42] - ANT_5G [pin 48] - CHIP_PU [pin 7] - GND_1 [pin 2] - GND_2 [pin 43] - GND_3 [pin 47] - GND_4 [pin 49] - GPIO10 [pin 19] - GPIO13 [pin 22] - GPIO14 [pin 23] - GPIO23 [pin 33] - GPIO24 [pin 34] - GPIO25 [pin 35] - GPIO26 [pin 36] - GPIO27 [pin 37] - GPIO28 [pin 38] - GPIO6 [pin 15] - GPIO7 [pin 16] - GPIO8 [pin 17] - GPIO9 [pin 18] - MTCK [pin 13] - MTDI [pin 12] - MTDO [pin 14] - MTMS [pin 11] - SPICLK [pin 31] - SPICS0 [pin 26] - SPICS1 [pin 25] - SPID [pin 32] - SPIHD [pin 30] - SPIQ [pin 27] - SPIWP [pin 28] - U0RXD [pin 21] - U0TXD [pin 20] - VDD_SPI [pin 29] - VDDA1 [pin 40] - VDDA2 [pin 41] - VDDA3 [pin 44] - VDDA4 [pin 45] - VDDA5 [pin 46] - VDDA6 [pin 1] - VDDA7 [pin 3] - VDDA8 [pin 6] - VDDPST1 [pin 8] - VDDPST2 [pin 24] - VDDPST3 [pin 39] - XTAL_32K_N [pin 10] - XTAL_32K_P [pin 9] - XTAL_N [pin 4] - XTAL_P [pin 5] ### J1 — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x06-254mm-vertical~jyw.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### LF — [IPEX-4](https://www.flux.ai/lcsc/ipex-4~z2gx.md) - Manufacturer Part Number: IPEX-4 - LCSC Part Number: C2987683 - Package or Case Code: IPEX-SMD_4P-L1.8-W1.7-LS2.0 - JLCPCB Part Class: Extended Part - Manufacturer Name: Ziisor(致哲) - Part Type: RF Connectors / Coaxial Connectors **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U1 — [IMC0805ER100J01](https://www.flux.ai/lcsc/imc0805er100j01~n7f.md) - Manufacturer Name: VISHAY(威世) - Package or Case Code: IND-SMD_L2.0-W1.3-1 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: IMC0805ER100J01 - LCSC Part Number: C845122 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U2 — [NCV8705MT33TCG](https://www.flux.ai/lcsc/ncv8705mt33tcg~rvte.md) - Part Type: Linear Voltage Regulators (LDO) - Package or Case Code: WDFN-6_L2.0-W2.0-P0.65-BL-EP - LCSC Part Number: C604084 - Manufacturer Name: onsemi(安森美) - Manufacturer Part Number: NCV8705MT33TCG **Pins:** - EN [pin 4] - EP [pin 7] - GND [pin 3] - IN [pin 6] - N/C [pin 5] - N/C [pin 2] - OUT [pin 1] ### U3 — [LQW15AN24NG80D](https://www.flux.ai/lcsc/lqw15an24ng80d~eze.md) - JLCPCB Part Class: Extended Part - Manufacturer Name: muRata(村田) - LCSC Part Number: C668462 - Package or Case Code: IND-SMD_L1.0-W0.5-2 - Part Type: Inductors/Coils/Transformers - Manufacturer Part Number: LQW15AN24NG80D **Pins:** - 1 [pin 1] - 2 [pin 2] ### U4 — [DPX162170DT-8022B1](https://www.flux.ai/lcsc/dpx162170dt-8022b1~70v.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010232_TDK-DPX162170DT-8022B1_C415318.pdf - JLCPCB Part Class: Extended Part - Manufacturer Part Number: DPX162170DT-8022B1 - Part Type: Diplexers - Package or Case Code: FILTER-ARRAY-SMD_6P-L1.6-W0.8-P0.55-BL - Product Info Url: https://lcsc.com/product-detail/RF-Diplexers_TDK-DPX162170DT-8022B1_C415318.html - Manufacturer Name: TDK - LCSC Part Number: C415318 **Pins:** - Common [pin 2] - GND [pin 3] - GND [pin 5] - GND [pin 1] - High-Band [pin 4] - Low-Band [pin 6] ### U5 — [ECS-480-10-48B-CKY-TR](https://www.flux.ai/lcsc/ecs-480-10-48b-cky-tr~yc6m.md) - Package or Case Code: CRYSTAL-SMD_4P-L1.2-W1.0-BL - Manufacturer Name: ECS - LCSC Part Number: C2613105 - Manufacturer Part Number: ECS-480-10-48B-CKY-TR **Pins:** - 2 [pin GND] - 3 [pin OSC2] - GND [pin 4] - OSC1 [pin 1] ### WiFi — [IPEX-4](https://www.flux.ai/lcsc/ipex-4~z2gx.md) - JLCPCB Part Class: Extended Part - Manufacturer Part Number: IPEX-4 - LCSC Part Number: C2987683 - Package or Case Code: IPEX-SMD_4P-L1.8-W1.7-LS2.0 - Part Type: RF Connectors / Coaxial Connectors - Manufacturer Name: Ziisor(致哲) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### X1 — [NX2016SA-32MHZ-STD-CZS-5](https://www.flux.ai/lcsc/nx2016sa-32mhz-std-czs-5~t0lw.md) - Package or Case Code: OSC-SMD_4P-L2.0-W1.6-BL - LCSC Part Number: C843260 - Part Type: Crystals - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.lcsc.com/datasheet/C843260.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlVZVVIFFgBeVAVTT1BXUgFfEwJeVlBfEwVcAlMHRAQxVlNeR1RZUVxURFFcUDsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Manufacturer Name: NDK - Manufacturer Part Number: NX2016SA-32MHZ-STD-CZS-5 **Pins:** - 1 [pin 1] - 3 [pin 3] - GND [pin 4] - GND [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/minhojiddin-technology-defence/lr2021-v4-mcu-v1~9y](https://www.flux.ai/minhojiddin-technology-defence/lr2021-v4-mcu-v1~9y).* --- *Generated from [https://www.flux.ai/minhojiddin-technology-defence/lr2021-v4-mcu-v1~9y](https://www.flux.ai/minhojiddin-technology-defence/lr2021-v4-mcu-v1~9y)*