EFM8BB3 Datasheet, PDF (2/70 Pages) Silicon Laboratories – The EFM8BB3 device family are fully integrated, mixed-signal system-on-a-chip MCUs. Highlighted features are listed below

EFM8BB3 Data Sheet
Feature List
1. Feature List
The EFM8BB3 device family are fully integrated, mixed-signal system-on-a-chip MCUs. Highlighted features are listed below.
• Core:
• Pipelined CIP-51 Core
• Fully compatible with standard 8051 instruction set
• 70% of instructions execute in 1-2 clock cycles
• 50 MHz maximum operating frequency
• Memory:
• Analog:
• 12/10-Bit Analog-to-Digital Converter (ADC)
• Internal temperature sensor
• 4 x 12-Bit Digital-to-Analog Converters (DAC)
• 2 x Low-current analog comparators with adjustable refer-
ence
• Up to 64 kB flash memory (63 kB user-accessible), in-sys-
tem re-programmable from firmware in 512-byte sectors
• Up to 4352 bytes RAM (including 256 bytes standard 8051
RAM and 4096 bytes on-chip XRAM)
• Power:
• Internal LDO regulator for CPU core voltage
• Power-on reset circuit and brownout detectors
• I/O: Up to 29 total multifunction I/O pins:
• Up to 25 pins 5 V tolerant under bias
• Selectable state retention through reset events
• Flexible peripheral crossbar for peripheral routing
• Communications and Digital Peripherals:
• 2 x UART, up to 3 Mbaud
• SPI™ Master / Slave, up to 12 Mbps
• SMBus™/I2C™ Master / Slave, up to 400 kbps
• _I²_{C High-Speed Slave, up to 3.4 Mbps}
• 16-bit CRC unit, supporting automatic CRC of flash at 256-
byte boundaries
• 4 Configurable Logic Units
• Timers/Counters and PWM:
• 6-channel programmable counter array (PCA) supporting
PWM, capture/compare, and frequency output modes
• 5 mA source, 12.5 mA sink allows direct drive of LEDs
• Clock Sources:
• Internal 49 MHz oscillator with accuracy of ±2%
• 6 x 16-bit general-purpose timers
• Independent watchdog timer, clocked from the low frequen-
cy oscillator
• Internal 24.5 MHz oscillator with ±2% accuracy
• On-Chip, Non-Intrusive Debugging
• Internal 80 kHz low-frequency oscillator
• Full memory and register inspection
• External CMOS clock option
• Four hardware breakpoints, single-stepping
• External crystal/RC/C Oscillator (up to 25 MHz)
With on-chip power-on reset, voltage supply monitor, watchdog timer, and clock oscillator, the EFM8BB3 devices are truly standalone
system-on-a-chip solutions. The flash memory is reprogrammable in-circuit, providing nonvolatile data storage and allowing field up-
grades of the firmware. The on-chip debugging interface (C2) allows non-intrusive (uses no on-chip resources), full speed, in-circuit
debugging using the production MCU installed in the final application. This debug logic supports inspection and modification of memory
and registers, setting breakpoints, single stepping, and run and halt commands. All analog and digital peripherals are fully functional
while debugging. Device operation is specified from 2.2 V up to a 3.6 V supply. Devices are AEC-Q100 qualified (pending) and availa-
ble in 4x4 mm 32-pin QFN, 3x3 mm 24-pin QFN, 32-pin QFP, or 24-pin QSOP packages. All package options are lead-free and RoHS
compliant.
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Preliminary Rev. 0.2 | 1