Datasheet EFM8SB2 (Silicon Labs)

EFM8 Sleepy Bee Family EFM8SB2 Data Sheet
The EFM8SB2, part of the Sleepy Bee family of MCUs, is the
ENERGY FRIENDLY FEATURES
world’s most energy friendly 8-bit microcontrollers with a compre- hensive feature set in small packages. • Lowest MCU sleep current with supply brownout detection (50 nA) These devices offer lowest power consumption by combining innovative low energy tech- • Lowest MCU active current with these niques and short wakeup times from energy saving modes into small packages, making features (170 μA / MHz at 24.5 MHz clock them well-suited for any battery operated applications. With an efficient 8051 core, 6-bit rate) current reference, and precision analog, the EFM8SB2 family is also optimal for embed- • Lowest MCU sleep current using internal ded applications. RTC operating and supply brownout detection (<300 nA) EFM8SB2 applications include the following: • Ultra-fast wake up for digital and analog peripherals (< 2 μs) • Hand-held devices • Battery-operated consumer electronics • Integrated low drop out (LDO) voltage • Industrial controls • Sensor interfaces regulator to maintain ultra-low active current at all voltages
Core / Memory Clock Management Energy Management CIP-51 8051 Core Low Power 20 External Internal LDO MHz RC Power-On Reset (25 MHz) Oscillator Regulator Oscillator Flash Program High Frequency RAM Memory Debug Interface External 32 kHz Memory 24.5 MHz RC Brown-Out Detector (4352 bytes) with C2 RTC Oscillator (up to 64 KB) Oscillator 8-bit SFR bus Serial Interfaces I/O Ports Timers and Triggers Analog Interfaces Security External Timers ADC Comparator 0 16/32-bit CRC UART 2 x SPI Pin Reset PCA/PWM Interrupts 0/1/2/3 Internal Voltage Comparator 1 Reference General Watchdog Real Time I2C / SMBus Pin Wakeup Purpose I/O Timer Clock Internal Current Reference Lowest power mode with peripheral operational: Normal Idle Suspend Sleep silabs.com
| Smart. Connected. Energy-friendly. Rev. 1.2 Document Outline 1. Feature List 2. Ordering Information 3. System Overview 3.1 Introduction 3.2 Power 3.3 I/O 3.4 Clocking 3.5 Counters/Timers and PWM 3.6 Communications and Other Digital Peripherals 3.7 Analog 3.8 Reset Sources 3.9 Debugging 3.10 Bootloader 4. Electrical Specifications 4.1 Electrical Characteristics 4.1.1 Recommended Operating Conditions 4.1.2 Power Consumption 4.1.3 Reset and Supply Monitor 4.1.4 Flash Memory 4.1.5 Power Management Timing 4.1.6 Internal Oscillators 4.1.7 Crystal Oscillator 4.1.8 External Clock Input 4.1.9 ADC 4.1.10 Voltage References 4.1.11 Temperature Sensor 4.1.12 Comparators 4.1.13 Programmable Current Reference (IREF0) 4.1.14 Port I/O 4.2 Thermal Conditions 4.3 Absolute Maximum Ratings 4.4 Typical Performance Curves 5. Typical Connection Diagrams 5.1 Power 5.2 Debug 5.3 Other Connections 6. Pin Definitions 6.1 EFM8SB2x-QFN32 Pin Definitions 6.2 EFM8SB2x-QFN24 Pin Definitions 6.3 EFM8SB2x-QFP32 Pin Definitions 7. QFN32 Package Specifications 7.1 QFN32 Package Dimensions 7.2 QFN32 PCB Land Pattern 7.3 QFN32 Package Marking 8. QFN24 Package Specifications 8.1 QFN24 Package Dimensions 8.2 QFN24 PCB Land Pattern 8.3 QFN24 Package Marking 9. QFP32 Package Specifications 9.1 QFP32 Package Dimensions 9.2 QFP32 PCB Land Pattern 9.3 QFP32 Package Marking 10. Revision History 10.1 Revision 1.2 10.2 Revision 1.1 Table of Contents