32-bit MCU, 256KB Flash, 50MHz, TQFP, 34 I/O, USB, SPI, I2C
32b MCU, 50MHz, 256KB FLASH, 64KB RAM, QFN, 34 I/O
32-bit MCU, 50MHz, 256KB Flash, 64KB RAM, 34 I/O, USB, SPI, I2C, UART