kryptonite
samienr
affordable open source USB-C security key using STM32F072CBU6 and ATECC608A
Components (15)
| Reference | Value | Description |
|---|---|---|
| U1 | STM32F072CBUx | STMicroelectronics Arm Cortex-M0 MCU, 128KB flash, 16KB RAM, 48 MHz, 2.0-3.6V, 37 GPIO, UFQFPN48 |
| U2 | ATECC608B-MAHDA | Cryptographic Co-Processor with Secure Hardware-based 16 Key Storage, ECDSA and ECDH support, I2C, UDFN-8 |
| U3 | MCP1700x-330xxTT | 250mA Low Quiscent Current LDO, 3.3V output, SOT-23 |
| U4 | USBLC6-2SC6 | Very low capacitance ESD protection diode, 2 data-line, SOT-23-6 |
| C1,C11,C12 | 10u | Unpolarized capacitor |
| C2-C7,C10 | 100n | Unpolarized capacitor |
| C8,C9 | 33p | Unpolarized capacitor |
| D1 | GR | Light emitting diode |
| J1 | Conn_01x04_Pin | Generic connector, single row, 01x04, script generated |
| P1 | USB_C_Plug_USB2.0 | USB Type-C Plug connector |
| R1,R5 | 10k | Resistor |
| R2-R4 | 4k7 | Resistor |
| R6 | 68 | Resistor |
| SW1 | SW_Push | Push button switch, generic, two pins |
| Y1 | 8MHz | Four pin crystal, GND on pins 2 and 4 |