SILICON LABS EFM8UB11F16G-C-QFN24R

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. 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.

• 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 compliant)
• 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
• Priority crossbar for flexible pin mapping
• Pipelined CIP-51 Core
• Fully compatible with standard 8051 instruction set
• 70% of instructions execute in 1-2 clock cycles
• Up to 16 KB flash memory, in-system re-programmable from firmware, including 1 KB of 64-byte sectors and 15 KB of 512-byte sectors
• Up to 2304 bytes RAM (including 256 bytes standard 8051 RAM, 1024 bytes on-chip XRAM, and 1024 bytes of USB buffer)
• 5 V-input LDO regulator for direct connection to USB supply
• Internal LDO regulator for CPU core voltage
• Power-on reset circuit and brownout detectors
• All pins 5 V tolerant under bias
• Flexible peripheral crossbar for peripheral routing
• 5 mA source, 12.5 mA sink allows direct drive of LEDs
• Internal 48 MHz oscillator with accuracy of ±1.5% standalone and ±0.25% using USB clock recovery
• Internal 24.5 MHz oscillator with ±2% accuracy
• Internal 80 kHz low-frequency oscillator
• External CMOS clock option
• 3-channel Programmable Counter Array (PCA) supporting PWM, capture/compare, and frequency output modes
• 5 x 16-bit general-purpose timers
• Independent watchdog timer, clocked from the low frequency oscillator
• USB 2.0-compliant full speed with integrated low-power transceiver, 4 bidirectional endpoints, and dedicated 1 KB buffer
• 2 x UART, up to 3 Mbaud
• SPI Master / Slave, up to 12 Mbps
• SMBus/I2C Master / Slave, up to 400 kbps
• I2C High-Speed Slave, up to 3.4 Mbps
• 16-bit CRC unit, supporting automatic CRC of flash at 256-byte boundaries
• 12-Bit Analog-to-Digital Converter (ADC)
• 2 x Low-current analog comparators with adjustable reference
• Full memory and register inspection
• Four hardware breakpoints, single-stepping
• CIP-51 Core running up to 50 MHz
• Three Internal Oscillators (48 MHz, 24.5 MHz and 80 kHz)
• USB Full/Low speed Function Controller
• SMBus
• I2C Slave
• SPI
• 2 UARTs
• 3-Channel Programmable Counter Array (PWM, Clock Generation, Capture/Compare)
• 5 16-bit Timers
• 2 Analog Comparators
• 12-bit Analog-to-Digital Converter with integrated multiplexer, voltage reference, and temperature sensor
• 16-bit CRC Unit
• Pre-loaded USB bootloader

• USB I/O controls, dongles
• Consumer electronics
• High-speed communication bridge
• Medical equipment