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nPZero 2100

Overview​

The nPZero 2100 power-saving IC targets power-constrained sensor applications, reducing system power by autonomously managing sensor communication and selectively powering up the MCU and sensors only when needed.

It offers a similar feature set to the nPZero G1S while adding a number of new features in order to handle more complex use cases and a wider range of sensors.

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Key Benefits​

  • Reduce power consumption by up to 90%
  • Power the MCU and sensors only when needed
  • Handle sensors autonomously without an active MCU
  • Compatible with a wide range of MCU's and I²C or SPI-based sensors

Main Features​

  • Ultra-low-power standalone operation
    • The nPZero IC wakes up the MCU only when required
  • Autonomous management of up to 6 sensors
    • Polling of sensors with threshold-based wake-up triggers
    • Communication over I²C or SPI
    • Flexible I/O pins for interrupt inputs or trigger outputs
  • Integrated power switches for MCU and sensors
    • Power devices directly or control external switches for higher currents
  • Power-aware operation for energy-harvesting
    • Reduces sensor polling frequency and MCU wake-ups when system power levels are low
  • 256-byte SRAM
    • Initialization commands for sensors
    • Logging of sensor values
    • General purpose user data
  • Internal crystal oscillator
    • Improved timing accuracy with optional 32.768 kHz crystal
  • 36-bit time counter with alarm and watchdog
    • Keeps track of time and wake-ups at a specified alarm
    • Watchdog can power-cycle MCU after certain time
  • General purpose event counter
    • 32-bit counter for input pin or sensor power-on events
  • 8-bit ADC
    • Three channel ADC ( 2 external pins, 1 internal connected to the supply voltage )
    • Configurable thresholds for wake-up events

Key Specifications​

SpecificationValue
Supply voltage1.7 V - 3.6 V
Idle current @ 3.0V and 22°C200 nA
Polling current @ 3.0V and 22°C1.0 µA
Host switch max current10 mA
Sensor switch max current (x4)1 mA
I²C / SPI frequency100 kHz
Temperature range-40°C to +85°C
Package optionsQFN32, 5.0x5.0 mm
WLCSP34, 2.5x2.5 mm

Typical applications​

  • Battery-powered and energy-harvesting-powered IoT devices
  • Smart Buildings/Cities/Agriculture
  • Tracking, Logging, Monitoring ++