EFM8 Sleepy Bee 8-bit Microcontrollers (MCUs)

Optimal for low power and battery powered systems, Sleepy Bee EFM8™ microcontrollers offer the lowest power consumption available by combining innovative low energy techniques and short wakeup times. The Sleep Bee family of MCUs operate at up to 25 MHz and include up to 14 high-quality capacitive sense channels.  

Automotive Grade Sleepy Bee MCUs

Operating at temperatures ranging from -40°C to 85°C, Sleepy Bee MCUs are AEC-Q100 qualified with capacitive touch and lower power. 

Features

  • Lowest MCU sleep current with supply brownout (50 nA)
  • Lowest MCU active current (150 μA / MHz at 24.5 MHz)
  • Lowest MCU wake on touch average current (< 1 μA)
  • Lowest sleep current using internal RTC and supply brownout (< 300 nA)
  • Ultra-fast wake up for digital and analog peripherals (< 2 μs)
  • Integrated LDO to maintain ultra-low active current at all voltages
  • Up to 14 capacitive sense channels

Get Started with EFM8 Sleepy Bee

Sleepy Bee Starter Kits

The EFM8 Sleepy Bee family of MCUs offers humidity and temperature sensing features. Download one of two Sleepy Bee starter kids and start designing today.

View Starter Kits


Sleepy Bee Product Matrix

Common Specifications

MCU Core: 8051

MHz: 25

USB: No

Temp Sensor: Yes

PCA Channels: 3

Timers (16-bit): 4

UART: 1

I²C: 1

VREF: Yes

Devices
Part Number Data Sheet Dev Kit MCU Core MHz Flash (kB) RAM (kB) Dig I/O Pins 5 Volt Tolerant ADC 1 USB Temp Sensor Timers (16-bit) PCA Channels DAC Comparators UART SPI I²C HS I²C Slave I²S EMIF CAN LIN AES AEC-Q100 Vdd (min) Vdd (max) Package Type Package Size Internal Osc. VREF Debug Interface Temperature Range (ºC)
SLSTK2010A 8051 25 2 0.25 16 No 12-bit, 9-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No No 1.8 3.6 QFN20 3x3 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 4 0.5 16 No 12-bit, 9-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No No 1.8 3.6 QFN20 3x3 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 8 0.5 16 No 12-bit, 9-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No Yes 1.8 3.6 QFN20 3x3 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 8 0.5 17 No 12-bit, 9-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No Yes 1.8 3.6 QFN24 4x4 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 8 0.5 13 No 12-bit, 9-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No No 1.8 3.6 CSP16 1.65x1.78 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 8 0.5 16 No 12-bit, 9-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No No 1.8 3.6 QFN20 3x3 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 8 0.5 17 No 12-bit, 10-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No No 1.8 3.6 QFN24 4x4 ±2 Yes C2 -40 85
SLSTK2010A 8051 25 8 0.5 17 No 12-bit, 10-ch. No Yes 4 3 1 1 1 1 0 0 0 0 0 No No 1.8 3.6 QSOP24 8.7x3.9 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 16 4 16 Yes 10-bit, 15-ch. No Yes 4 6 2 1 2 1 0 0 0 0 0 No No 0.9 3.6 QFN24 4x4 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 32 4 16 Yes 10-bit, 15-ch. No Yes 4 6 2 1 2 1 0 0 0 0 0 No No 0.9 3.6 QFN24 4x4 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 32 4 24 Yes 10-bit, 23-ch. No Yes 4 6 2 1 2 1 0 0 1 0 0 No No 0.9 3.6 QFN32 5x5 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 32 4 24 Yes 10-bit, 23-ch. No Yes 4 6 2 1 2 1 0 0 1 0 0 No No 0.9 3.6 QFP32 7x7 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 64 4 16 Yes 10-bit, 15-ch. No Yes 4 6 2 1 2 1 0 0 0 0 0 No No 0.9 3.6 QFN24 4x4 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 64 4 24 Yes 10-bit, 23-ch. No Yes 4 6 2 1 2 1 0 0 1 0 0 No No 0.9 3.6 QFN32 5x5 ±2 Yes C2 -40 85
SLSTK2011A 8051 25 64 4 24 Yes 10-bit, 23-ch. No Yes 4 6 2 1 2 1 0 0 1 0 0 No No 0.9 3.6 QFP32 7x7 ±2 Yes C2 -40 85
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