# [Example] STM32F4x Preliminary Design ## Description A preliminary design for developing SMT32F4x series based project that’ll help you get started faster. ## Project Details - **Owner:** jamespcb - **Created:** 3/7/2022 - **Last Updated:** 3/3/2024 - **Visibility:** Public ## Key Components ### ? — [JTAG](https://www.flux.ai/jharwinbarrozo/jtag.md) **Pins:** - GND - GND - GND_DETECT - KEY - NC/TDI - nRESET - SWDCLK/TCK - SWDIO/TMS - SWO/TD0 - VCC ### LED — [LED](https://www.flux.ai/jharwinbarrozo/led-tht.md) - Series Resistance: 0.42Ω - Emission Coefficient: 3.73 - Forward Voltage: 1.70 - Breakdown Voltage: 0V - Saturation Current: 93.2e-12A **Pins:** - A [pin 2] - K [pin 1] ### Q1 — [N-Channel MOSFET](https://www.flux.ai/jharwinbarrozo/n-channel-mosfet.md) - Threshold Voltage: 20mV - Beta: 1.5 **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### RESET — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Manufacturer Name: OMRON - Part Type: Switch - Manufacturer Part Number: B3FS-1050P **Pins:** - P1 [pin 1] - P2 [pin 3] ### S1 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button.md) - Manufacturer Part Number: B3FS-1050P - Manufacturer Name: OMRON - Part Type: Switch - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf **Pins:** - P1 [pin 1] - P2 [pin 3] ### U1 — [STM32F405RGT6](https://www.flux.ai/jharwinbarrozo/stm32f405rgt6.md) - Manufacturer Part Number: STM32F405RGT6 - Datasheet URL: http://www.st.com/content/ccc/resource/technical/document/datasheet/ef/92/76/6d/bb/c2/4f/f7/DM00037051.pdf/files/DM00037051.pdf/jcr:content/translations/en.DM00037051.pdf - Part Type: Integrated Circuit - Manufacturer Name: STMicroelectronics - Package or Case Code: 64-LQFP **Pins:** - BOOT0 [pin 60] - NRST [pin 7] - PA0_WKUP [pin 14] - PA1 [pin 15] - PA10 [pin 43] - PA11 [pin 44] - PA12 [pin 45] - PA13 [pin 46] - PA14 [pin 49] - PA15 [pin 50] - PA2 [pin 16] - PA3 [pin 17] - PA4 [pin 20] - PA5 [pin 21] - PA6 [pin 22] - PA7 [pin 23] - PA8 [pin 41] - PA9 [pin 42] - PB0 [pin 26] - PB1 [pin 27] - PB10 [pin 29] - PB11 [pin 30] - PB12 [pin 33] - PB13 [pin 34] - PB14 [pin 35] - PB15 [pin 36] - PB2 [pin 28] - PB3 [pin 55] - PB4 [pin 56] - PB5 [pin 57] - PB6 [pin 58] - PB7 [pin 59] - PB8 [pin 61] - PB9 [pin 62] - PC0 [pin 8] - PC1 [pin 9] - PC10 [pin 51] - PC11 [pin 52] - PC12 [pin 53] - PC13 [pin 2] - PC14 [pin 3] - PC15 [pin 4] - PC2 [pin 10] - PC3 [pin 11] - PC4 [pin 24] - PC5 [pin 25] - PC6 [pin 37] - PC7 [pin 38] - PC8 [pin 39] - PC9 [pin 40] - PD2 [pin 54] - PH0 [pin 5] - PH1 [pin 6] - VBAT [pin 1] - VCAP_1 [pin 31] - VCAP_2 [pin 47] - VDD1 [pin 19] - VDD2 [pin 32] - VDD3 [pin 48] - VDD4 [pin 64] - VDDA [pin 13] - VSS1 [pin 18] - VSS2 [pin 63] - VSSA [pin 12] ### U2 — [LM75BDP,118](https://www.flux.ai/vasyl/lm75bdp118.md) - Package or Case Code: SO8 - Datasheet URL: https://www.nxp.com/docs/en/data-sheet/LM75B.pdf - Manufacturer Name: NXP Semiconductors NV - Manufacturer Part Number: LM75BDP,118 - Part Type: Integrated Circuit **Pins:** - A0 - A1 - A2 - GND - OS - SCL - SDA - VCC ### U3 — [MPU-9250](https://www.flux.ai/jharwinbarrozo/mpu-9250.md) - Manufacturer Name: TDK InvenSense - Package or Case Code: 24QFN - Part Type: Integrated Circuit - Manufacturer Part Number: MPU-9250 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/TDK%20PDFs/MPU-9250_Rev_1.1.pdf **Pins:** - P1 [pin 16] - P10 [pin 4] - P11 [pin 13] - P12 [pin 22] - P13 [pin 7] - P14 [pin 12] - P15 [pin 18] - P16 [pin 25] - P17 [pin 5] - P18 [pin 20] - P19 [pin 19] - P2 [pin 1] - P20 [pin 21] - P21 [pin 9] - P22 [pin 2] - P23 [pin 3] - P24 [pin 8] - P25 [pin 10] - P3 [pin 6] - P4 [pin 17] - P5 [pin 15] - P6 [pin 14] - P7 [pin 24] - P8 [pin 11] - P9 [pin 23] ### X1 — [Crystal Oscillator](https://www.flux.ai/jharwinbarrozo/crystal-oscillator.md) - Part Type: Oscillator - Frequency: 26MHz **Pins:** - P1 - P2 *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jamespcb/example-stm32f4x-preliminary-design](https://www.flux.ai/jamespcb/example-stm32f4x-preliminary-design).* --- *Generated from [https://www.flux.ai/jamespcb/example-stm32f4x-preliminary-design](https://www.flux.ai/jamespcb/example-stm32f4x-preliminary-design)*