SILICON LABS EFM8BB31F64I-D-QFP32

The EFM8BB3 belongs to the Busy Bee family of microcontrollers and is a high-performance 8-bit MCU that integrates a comprehensive set of analog and digital features in a small form-factor package. These devices deliver advanced performance by integrating a 12-bit ADC, an internal temperature sensor, and up to four 12-bit DACs into compact packages, making them ideal for general-purpose applications. With an efficient pipelined 8051 core operating at up to 50 MHz, multiple communication interfaces, and four-channel configurable logic, the EFM8BB3 family is an excellent choice for a wide range of embedded applications.

• Pipelined 8-bit 8051 microcontroller core, up to 50 MHz operating frequency
• Up to 29 multi-function I/O pins
• One 12-bit/10-bit ADC
• Four 12-bit DACs with synchronization and PWM capability
• Two low-power analog comparators with built-in reference DAC
• Internal temperature sensor
• Internal 49 MHz and 24.5 MHz oscillators, ±2% accuracy
• 4-channel configurable logic unit
• 6-channel PWM/programmable counter array
• Six 16-bit general-purpose timers
• 8-bit SFR bus
• Low power modes supporting peripheral operation: normal, idle, suspend, snooze, shutdown
• Up to 64 kB flash (63 kB user-accessible), in-system reprogrammable in 512-byte sectors
• Up to 4352 bytes RAM (256 bytes standard 8051 RAM + 4096 bytes on-chip XRAM)
• Internal LDO regulator for core power supply
• Power-on reset circuit and brownout detector
• Up to 25 pins support 5 V tolerance under bias
• State retention selectable via reset event
• Flexible peripheral crossbar for peripheral routing
• 5 mA source current, 12.5 mA sink current, direct LED drive capability
• Internal 80 kHz low-frequency oscillator
• External CMOS clock option (up to 25 MHz)
• External crystal/RC oscillator option, up to 25 MHz
• 2 UARTs, up to 3 Mbaud
• SPI master/slave mode, up to 12 Mbps
• SMBus/I2C master/slave mode, up to 400 kbps
• I2C high-speed slave mode, up to 3.4 Mbps
• 16-bit CRC unit with automatic flash verification at 256-byte boundaries
• 6-channel programmable counter array supporting PWM, capture/compare, and frequency output modes
• Dedicated watchdog timer clocked by low-frequency oscillator
• On-chip non-intrusive debug with full memory and register inspection, four hardware breakpoints, and single-step execution
• Pre-programmed UART bootloader
• Operating temperature range -40 to 85℃ or -40 to 125℃
• Available in commercial, industrial, and automotive grades

• Consumer Electronics
• Precision Instruments
• Power Management & Control
• Industrial Control & Automation
• Smart Sensors
• Automotive Control