Silicon-- Labs EFM8BB51 /2 Busy Bee 8-bit MCU
Silicon-- Labs EFM8BB51 /2 Busy Bee 8-bit MCU
Silicon Labs EFM8BB51 and EFM8BB52 Busy Bee MCUs are multi-purpose MCUs with comprehensive functions and compact packages. These devices can integrate advanced analog and communication peripherals in a small package, providing customers with very high value. EFM8BB51 and EFM8BB52 MCUs feature high-efficiency 8051 cores, 5V I/O, precision analog and enhanced pulse width modulation, and are suitable for embedded applications.
Silicon Labs EFM8BB51/EFM8BB52 Busy Bee MCU includes on-chip power-on reset, voltage supply monitor, and integrated clock oscillator. The flash memory can be reprogrammed in the circuit, provides non-volatile data storage, and allows on-site firmware upgrades. The on-chip debug interface (C2) allows online debugging using the production MCU installed in the final application. The debugging logic supports checking and modifying memory and registers, setting breakpoints, single stepping, and run and stop commands. When debugging, all analog and digital peripherals are fully functional.
EFM8BB51 MCU is available in 20-pin TSSOP and QFN packages. The device's rated operating voltage is 1.8V to 5.5V. EFM8BB52 MCU is available in 20-pin and 28-pin QFN packages, or 24-pin QSOP packages. The device's rated operating voltage is 2.2V to 3.6V, or up to 5.25V, and the regulator option is 5V. All packaging options are lead-free and comply with the RoHS directive.
Main features
1 core
Pipeline CIP-51 core
Fully compatible with standard 8051 instruction set
70% of instructions executed within 1-2 clock cycles
Maximum operating frequency: 50MHz
2 memory
Up to 16kb flash memory, the system can be reprogrammed from firmware.
EFM8BB51: Up to 1280 bytes of RAM
EFM8BB52: Up to 2304 bytes of RAM
3 power supply
EFM8BB51: 8.0V to 5.5V single power supply
EFM8BB52: 2.2V to 3.6V or 3.0V to 5.25V single power supply
5V input LDO regulator (EFM8BB52 only)
Internal LDO regulator for CPU core voltage
Power-on reset circuit and power-down detector
EFM8BB51: A total of 16 multi-function I/O pins
EFM8BB52: Up to 22 multi-function I/O pins
All pins can provide 5V when biased
Flexible peripheral cross-channel architecture for peripheral routing
High current, can directly drive LED
5mA source current, 12.5mA sink current support direct drive LED (EFM8BB52 only)
Clock source
Internal 49MHz oscillator
Internal 24.5MHz oscillator (EFM8BB52 only)
Internal 80kHz low frequency oscillator
Internal 10MHz oscillator (EFM8BB51 only)
External CMOS clock option
On-chip non-intrusive debugging
Comprehensive memory and register checks
