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Referencia SparkFun v13 de 5 V\u002F16 MHz.","ATmega32U4 compacto con USB nativo, 18 GPIO y nueve entradas ADC; referencia de 5 V\u002F16 MHz.","Arduino Pro Micro (ATmega32U4) permite crear controladores USB compactos. Este modelo representa SparkFun v13 de 5 V\u002F16 MHz; las placas compatibles pueden cambiar conectores, reguladores y bootloaders.","Lógica de 5 V. Recomendación: hasta 20 mA por GPIO. Los 40 mA por E\u002FS y 200 mA totales por VCC\u002FGND son límites absolutos; también se aplican los límites por grupos de puertos.","Nueve entradas ADC: A0–A3 y D4\u002FD6\u002FD8\u002FD9\u002FD10. Los alias analógicos Arduino no son canales del silicio: D6\u002FA7 corresponde a ADC10, no ADC9.","Serial usa USB nativo; Serial1 usa RXI\u002FD0 y TXO\u002FD1. I2C: D2\u002FSDA, D3\u002FSCL. SPI: D15\u002FSCK, D14\u002FMISO, D16\u002FMOSI. SS\u002FD17 controla el LED RX y no sale al conector.","SJ1 está ARRIBA: cerrada en la placa de 5 V, une USB UVCC con VCC y puentea el regulador. No convierte una placa de 16 MHz en la variante de 3,3 V\u002F8 MHz.","GPIO de 5 V con pull-up interno de 20–50 kΩ. Interrupciones externas: D0, D1, D2, D3 y D7. Comprueba los niveles de periféricos de 3,3 V.",{"summary":776,"power":783,"notes":787,"useCases":789,"before":793,"blueprintNotice":795,"variants":796},{"usb":784,"raw":785,"vcc":786},"Micro-B transmite datos y alimentación. SJ1 cerrada une USB UVCC y VCC; el fusible y el diodo alimentan RAW. No todas las rutas hacia VCC pasan por el fusible.","SparkFun recomienda RAW por encima de 6 V y hasta 12 V para esta placa de 5 V. Los 16 V de diagramas antiguos son un máximo del regulador, no una entrada recomendada. Considera carga y temperatura.","VCC es la línea de 5 V y admite una fuente regulada de 5 V, sin pasar por el LDO. Evita que fuentes independientes y USB se alimenten entre sí.",{"logic":781,"native_usb":779,"current":788},"Hasta 20 mA por GPIO como guía; 40 mA absolutos por pin, 200 mA agregados y límites por puerto. Las cifras del MIC5219 y del fusible no garantizan corriente disponible para periféricos.",{"keyboards":790,"gamepads":791,"embedded":792},"Teclados USB y macropads, incluidos objetivos QMK compatibles.","Mandos USB y paneles de control.","Interfaces USB de sensores y registradores compactos.",{"logic":781,"raw":785,"usb_bricking":794},"SparkFun Caterina abre una ventana de 8 segundos al conectar brevemente RST a GND dos veces. Selecciona la variante correcta; otros bootloaders pueden funcionar de otro modo. (5 V\u002F16 MHz; 3,3 V\u002F8 MHz).","Referencia: SparkFun Pro Micro DEV-12640, Eagle v13, 5 V\u002F16 MHz. 24 contactos del CAD, SJ1 arriba y reverso reflejado. Los cuerpos principales siguen el CAD; los detalles superficiales son esquemáticos. Verifica cada clon.",{"sparkfun_canonical":797,"type_c_clones":798,"cc_resistor_trap":799,"connector_durability":800,"bootloader_bricking":794},"ATmega32U4: 5 V\u002F16 MHz y 3,3 V\u002F8 MHz necesitan alimentación, reloj y firmware correspondientes. La referencia usa MIC5219 y USB nativo.","Las variantes USB-C pueden cambiar protección y etiquetas. Contrasta su propio esquema; no se presupone compatibilidad.","Comprueba CC1\u002FCC2 en el esquema de cada variante USB-C. Un fallo dependiente del cable no demuestra que todos los clones omitan resistencias.","Sujeta el conector Micro-B y evita fuerzas laterales. La retención depende del conector y de la revisión.",{"usb":802,"mcu":803,"clock":804,"regulator":805,"jumper":806,"leds":807},"Micro-B conecta directamente con USB del ATmega32U4. Serial es USB CDC; Serial1 es el UART independiente.","ATmega32U4 QFN44, 7 × 7 mm, 16 MHz: USB nativo, 32 KB flash y 2,5 KB SRAM. Los conectores exponen 18 GPIO y nueve entradas ADC.","Y1 es un cristal de 16 MHz. La frecuencia del firmware debe coincidir con la variante física.","MIC5219 regula RAW a VCC. Entrada, caída del LDO, temperatura y consumo limitan la carga; 500 mA no están disponibles en toda condición.","SJ1 está ARRIBA, cerrada para 5 V y abierta para 3,3 V. Une USB UVCC y VCC; no sustituye la elección correcta de tensión y reloj.","PWR rojo; RX amarillo en PB0\u002FD17; TX verde en PD5\u002FD30. Las dos señales de actividad USB no añaden GPIO a los conectores.",1793836402534]