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Aiming Low: Low-Power MCUs for the IoT
- 1. Aiming Low: Low-Power MCUs for the IoT
- 2. 2 Silicon Labs Confidential Reduced processing time Very fast wake up time Very low active power consumption 10 Low-Energy Design Factors EFM32TG µA/MHz @3V EFM32ZG µA/MHz @3V 150 110 CoreMark/MHz Cortex-M0+ Cortex-M3 Cortex-M4 2.42 3.32 3.40 Wake-up time from sleep modes 2 µs
- 3. 3 Silicon Labs Confidential Autonomous peripherals Peripheral Reflex System Ultra-low standby current 10 Low-Energy Design Factors Direct peripheral interconnection system Boosting the value of autonomous operation Highly configurable Operation while CPU sleeps Extensive DMA Support All peripherals can operate autonomously Shutoff current @ 3V Deep Sleep @ 3V incl. POR, BOD, RTC, RAM and CPU retained 20 nA 900 nA Reflex Producers Reflex Consumers ARM Cortex -M processor Z Z Z Peripheral Reflex System ADCTimer GPIO DAC
- 4. 4 Silicon Labs Confidential Ultra energy efficient peripherals Low Energy Sensor Interface Well designed Energy Modes 10 Low-Energy Design Factors EM0 “Run Mode”: 110 µA/MHz EM1 “Sleep Mode”: 45 µA/MHz EM2 “Deep Sleep Mode”: 900 nA RTC, Brown-Out Detection, RAM and CPU retained EM3 “Stop Mode”: 500 nA Brown-Out Detection, RAM & CPU retained EM4 “Shutoff Mode”: 20 nA Pin/GPIO Reset, RTC + 512-byte backup memory : 400 nA Analog to Digital Converter 12-bit @ 1 MSamples/s: 350 µA Low Energy UART Full UART with 32 kHz clock 150 nA @ 9600 baud/s LCD Controller Directly driving up to 8x36 segment LCDs Boost/Contrast/Animation/Blink 550 nA for 4x40 Autonomous sensor monitoring in deep sleep Up to 16 sensors simultaneously Highly configurable Resistive, Capacitive, Inductive EFM32 Z Z Z Z Z
- 5. 5 Silicon Labs Confidential 10 Low-Energy Design Factors AEM - Advanced Energy Monitoring and the energyAware Profiler The energyAware Profiler is an energy debugging tool that use Advanced Energy Monitoring (AEM) data available from the development tools to perform real- time profiling and debugging of the associated object code.
- 6. Thank You!