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eddyem
Code samples and ready projects based on bare-metal STM32
| Reference | Value | Description |
|---|---|---|
| Q1 | DTA114Y | Digital PNP Transistor, 10k/47k, SOT-23 |
| Q2,Q3 | B0505S-2W | isolated DC-DC |
| U1 | LM1117MP-3.3 | 800mA Low-Dropout Linear Regulator, 3.3V fixed output, SOT-223 |
| U2 | USBLC6-2SC6 | Very low capacitance ESD protection diode, 2 data-line, SOT-23-6 |
| U3 | STM32F103C8Tx | STMicroelectronics Arm Cortex-M3 MCU, 64KB flash, 20KB RAM, 72 MHz, 2.0-3.6V, 37 GPIO, LQFP48 |
| U4,U6 | ISO3086 | |
| U5 | MAX3232 | 3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232 Transceivers Using Four 0.1μF External Capacitors |
| C1,C2,C6-C12,C15,C16,C20,C21 | 0.1 | Unpolarized capacitor |
| C3 | 22u | Unpolarized capacitor |
| C4,C5 | 12 | Unpolarized capacitor |
| C13,C14,C22,C23 | 1u | |
| C17-C19 | 0.47 | Unpolarized capacitor |
| D1,D2,D7 | 1N5817 | Schottky diode |
| D3,D4,D8,D9 | SM712_SOT23 | 7V/12V, 600W Asymmetrical TVS Diode Array, SOT-23 |
| D5,D6 | SMAJ15CA | 400W bidirectional Transient Voltage Suppressor, 15.0Vr, SMA(DO-214AC) |
| F1,F2 | 0.5A | Fuse |
| J1 | Screw_Terminal_01x02 | Generic screw terminal, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| J2 | USB_B | |
| J5-J7,J11 | HOLE | Generic connector, single row, 01x01, script generated |
| J8,J10 | SSI/422 | 9-pin D-SUB connector, socket (female), Mounting Hole |
| J9 | 4P4C | RJ connector, 4P4C (4 positions 4 connected), RJ9/RJ10/RJ22 |
| R1-R3 | 22 | Resistor |
| R4 | 1k5 | Resistor |
| R5 | 1k | |
| R6 | 10k | |
| Y1 | 8MHz |