Kinetis K81-150 MHz HW Cryptographic Co-Processor, Anti-Tamper and QuadSPI Microcontrollers (MCUs) Based on Arm® Cortex®-M4 Core

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Kinetis K81_150 MCU Block Diagram

Kinetis K81_150 MCU Block Diagram

Features

Memory and Scalability

  • 256 KB of Flash
  • 256 KB of SRAM
  • CPU cache consisting of separate 8 KB I/D and 8 KB system cache
  • QSPI controller optimized for XIP from external serial NOR flash memories with support for quad and octal data interfaces
  • SDRAM and external memory bus interfaces
  • eMMC/SDIO interface through eSDHC peripheral

Ultra Low Power

  • Flexible low-power modes with power and clock gating for optimal peripheral activity and recovery times. Stop currents of <340 nA, run currents of 200 µA/MHz, 5.8 µs wake-up from Stop mode
  • Full memory and analog operation down to 1.71 volts for extended battery life
  • Low-leakage wake-up unit with up to seven internal modules and 24 pins as wake-up sources in low-leakage stop (LLS)/very low-leakage stop (VLLS) modes
  • Low-power peripherals and DMA for continuous system operation in reduced power state

Performance

  • Arm ® Cortex ®-M4 core + DSP up to 150 MHz, single-cycle MAC, single instruction multiple data (SIMD) extensions, single precision floating point unit
  • Up to 32-channel DMA for peripheral and memory servicing with reduced CPU loading and faster system throughput
  • CPU cache consisting of separate 8 KB I/D and 8 KB system cache
  • Crossbar switch enables concurrent multi-leader bus accesses, increasing bus bandwidth

Cost Saving Integration

  • 48 MHz internal reference clock capable of supporting full-speed USB device without an external crystal
  • Integrated USB regulator to allow direct connection to 5 V from USB cables
  • Separate I/O power domain for several pins allowing interfaces without external level translators
  • Analog voltage reference provides an accurate reference to analog blocks, ADC and DAC, and replaces external voltage references to reduce system cost

HMI (Human Machine Interface)

  • 32-Pin FlexIO block capable of interfacing to camera or displays
  • External memory bus for connection to smart display modules
  • Touch Sense interface supported by Kinetis ® SDK software library
  • GPIO pins with support for digital filtering

Mixed Signal Capability

  • 16-bit analog-to-digital converter (ADC) with configurable resolution. Single or differential output mode operation for improved noise rejection
  • 12-bit digital-to-analog converters (DACs) for analog waveform generation for audio applications
  • Two high-speed comparators providing fast and accurate motor over-current protection by driving PWMs to a safe state
  • Analog voltage reference provides an accurate reference to analog blocks, ADC and DAC, and replaces external voltage references to reduce system cost

Connectivity and Communications

  • USB 2.0 On-The-Go (full-speed) with USB transceiver. Intelligent design with embedded 48 MHz oscillator allowing for USB crystal-less system design. Device charge detect optimizes charging current/time for portable USB devices enabling longer battery life. Low-voltage regulator supplies up to 120 mA off-chip at 3.3 volts to power external components from 5 volts input
  • Up to four UARTs with IrDA support
  • EMVSIM module with ISO7816 smart card support
  • Inter-IC Sound (I2S) serial interface for audio system interfacing
  • Three DSPI and four I2C

Reliability and Safety

  • Memory protection unit provides memory protection for all leaders on the crossbar switch, increasing software reliability
  • Cyclic redundancy check engine validates memory contents and communication data, increasing system reliability
  • Independent-clocked COP guards against clock skew or code runaway for fail-safe applications such as the IEC 60730 safety standard for household appliances
  • External watchdog monitor drives output pin to safe state external components if watchdog event occurs

Advanced Security

  • Flash and chip security settings
  • Memory protection unit provides memory protection for all leaders on the crossbar switch, increasing software reliability
  • Hardware implementation of security operations Symmetrical crypto. Supports DES, 3DES, AES, MD5, SHA-1 and SHA-256 algorithms
  • Ability to disable JTAG and chip unique ID
  • ROM support for encrypted firmware updates
  • Flash Access controller to create execute only regions of embedded flash
  • Hardware crypto co-processor with support for DES, AES and Public key cryptography
  • On-the-fly AES decryption and execution from external serial NOR flash
  • Tamper detect module with detection temperature, voltage, clock or pin tampers with the ability to create active tamper meshes
  • 2 KB of secure session RAM linked to the tamper detect module

部品番号: MK81FN256VDC15, MK81FN256VLL15.

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