EFM8UB1 Key Features
- Pipelined 8-bit C8051 core with 50 MHz maximum operating frequency
- Up to 22 multifunction, 5 V tolerant I/O pins
- Low Energy USB with full- and low-speed support saves up to 90% of the USB energy
- USB charger detect circuit (USB-BCS 1.2 pliant)
- One 12-bit ADC and two analog parators with internal voltage DAC as reference input
- Five 16-bit timers
- Two UARTs, SPI, SMBus/I2C master/slave and I2C slave
- Priority crossbar for flexible pin mapping
- Pipelined CIP-51 Core
- Fully patible with standard 8051 instruction set