K81_150: Kinetis K81-150 MHz HW Cryptographic Co-Processor, Anti-Tamper and QuadSPI Microcontrollers (MCUs) Based on Arm® Cortex®-M4 Core
Overview
Features
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
Development Boards and Designs
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Target Applications
Automotive
Industrial
- Anesthesia Unit Monitor
- Blood Glucose Management
- Continuous Positive Airway Pressure Machine (CPAP)
- Digital Stethoscope
- Electricity Grid and Distribution
- Electricity Meter
- Gas Meter
- Heart Monitors
- Home Health Gateway
- Hospital Admission Machine
- Medical Imaging
- Powered Patient Beds
- Smart Power Socket and Light Switch
- Surround View
- Vital Signs Monitors
- Water Meter
