EFM8 Universal Bee Family
EFM8UB1 Data Sheet
The EFM8UB1, part of the Universal Bee family of MCUs, is a
multi-purpose line of 8-bit microcontrollers with USB feature set in
small packages. KEY FEATURES • Pipelined 8-bit C8051 core with 50 MHz
maximum operating frequency These devices offer high value by integrating an innovative energy-smart USB peripheral
interface, charger detect circuit, 8 kV ESD protection, and enhanced high speed communication interfaces into small packages, making them ideal for space-constrained USB
applications. With an efficient 8051 core and precision analog, the EFM8UB1 family is
also optimal for embedded applications. • 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
compliant) EFM8UB1 applications include the following:
• Consumer electronics
• Medical equipment • USB I/O controls, dongles
• High-speed communication bridge • One 12-bit ADC and two analog
comparators with internal voltage DAC as
reference input
• Five 16-bit timers
• Two UARTs, SPI, SMBus/I2C master/
slave and I2C slave …
