32KB FLASH Microcontroller, ARM Core, I2C/SPI, UART, 28-Pin QFN
128KB ARM Microcontroller with I2C/SPI Bridge, 28 I/Os, QFN Package
256KB ARM Microcontroller with I2C, SPI, UART, and 28 I/Os in QFN Package
32KB FLASH Microcontroller, ARM Core, 51 I/Os, -40°C to 85°C, RoHS
