New Product Introduction

NXP KM3x

KM3x - 50–75 MHz Precision Metrology MCUs with Segment LCDs based on Arm® Cortex®-M0+

The KM3x MCU family enables single-chip one-, two-, and three-phase electricity meters, as well as flow meters and other precision measurement applications. This family of MCUs:

  • Provides security with active and passive tamper detection with time stamping
  • Supports high-precision internal voltage reference with low temperature drift
  • Features a comprehensive enablement suite including reference designs

 

Features

  • MCU
    • High-performance Arm® Cortex®-M0 core, up to 75 MHz of core clock frequency
    • 512 KB/256 KB/64 KB single array flash
    • Supports v6-M Instruction Set Architecture (ISA) including all 16-bit v7-M instructions plus a number of 32-bit thumb-2 instructions
    • PLL to generate clocks for AFE
      • Input range: 31.25 kHz to 39.0625 kHz
      • Output range: 11.72 MHz to 14.65 MHz
    • FLL to generate core, system and flash clocks
      • Input range: 31.25 kHz to 39.0625 kHz
      • Output Range: 20 MHz to 50 MHz
    • Flexible modes of operation
    • Two internal trim-able clock references
      • 32 kHz
      • 4 MHz
  • Analog Font End
    • 24-bit sigma delta ADC with 94 dB SNR
    • Programmable gain amplifier with gains from 1 to 32 with low temperature drift
    • High precision internal voltage reference with low temperature drift
  • Security 
    • Tamper detection with time stamping
    • Random number generator, memory protection unit
    • Memory Mapped Cryptographic Acceleration Unit (MMCAU) for AES Encryption
    • Cyclic Redundancy Check (CRC)
  • Interfaces 
    • Voltage range 1.71 volts - 3.6 volts (without AFE)
    • Voltage range 2.7 volts - 3.6 volts (with AFE)
    • Temperature range -40°C to 105°C

 

Applications 

  • Automotive
    • Heating Ventilation, and Air Conditioning (HVAC)
    • Motorcycle Engine Control Unit (ECU) and Small Engine Control
    • Smart Car Access
  • Industrial
    • 3-Phase AC Induction Motor
    • Air Conditioning (AC)
    • Brushless DC Motor (BLDC) Control
    • Building Safety
    • Electricity Grid and Distribution
    • Electricity Meter
    • Energy Gateway
    • Gas Meter
    • Heat Metering
    • Motion Control and Robotics
    • Permanent Magnet Synchronous Motor (PMSM)
    • Smart Lighting
    • Smart Power Socket and Light Switch
    • Water Meter
  • Mobile
    • Input Device (Mouse, Pen, Keyboard)
  • Smart City
    • Automatic Vehicle Identification
    • Transport Ticketing
  • Smart Home
    • Home Security and Surveillance
    • Major Home Appliances
    • Robotic Appliance
    • Small and Medium Appliances

 

Block diagram

Related Documents


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