The K50 MCU family is pin-, peripheral- and software-compatible with other Kinetis microcontrollers and provides designers with an analog measurement engine consisting of integrated operational and transimpedance amplifiers and high-resolution analog-to-digital converter (ADC) and digital-to-analog converter (DAC) modules. The family also features IEEE® 1588 Ethernet and hardware encryption, full-speed USB 2.0 On-The-Go with device charger detectgoo capability and a flexible low-power segment LCD controller with support for up to 320 segments. Devices start from 256 KB of flash in 80-pin LQFP packages extending up to 512 KB in a 144-pin MAPBGA package.
Features
Ultra-Low-Power
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10 low-power modes with power and clock gating for optimal peripheral activity and recovery times. Stop currents down to 2 µA, and run currents of <350 181="" a="" mhz="" with="" 4="" s="" wake-up="" from="" stop="" mode="" 10="">
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Full memory and analog operation down to 1.71 volts for extended battery life
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Low-leakage wake-up unit with up to eight internal modules and 16 pins as wake-up sources in low-leakage stop (LLS)/very low-leakage stop (VLLS) modes
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Low-power timer for continual system operation in reduced power state
Flash, SRAM and FlexMemory
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256 KB - 512 KB flash. Fast access, high reliability with four-level security protection
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64 KB-128 KB of SRAM
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FlexMemory: 32 bytes-4KB of usersegmentable byte write/erase EEPROM for data tables/system data. EEPROM with over 10M cycles and flash with 70 µsec write time (brownouts without data loss/corruption). No user or system intervention to complete programming and erase functions and full operation down to 1.71 volts. In addition, upto 256 KB can be used for extra program code, data or EEPROM backup
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Up to two programmable gain amplifiers with x64 gain for small amplitude signal conversion
Mixed-Signal Capability
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Two operational amplifiers allow signal filtering and amplification
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Two transimpedance amplifiers optimized for converting current inputs into voltages that can be read by the ADC
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Two high-speed 16-bit ADCs with configurable resolution. Single or differential output mode operation for improved noise rejection. 500 ns conversion time achievable with programmable delay block triggering
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Two 12-bit DACs for analog waveform generation for audio applications
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Three high-speed comparators providing fast and accurate motor over-current protection by driving PWMs to a safe state
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Analog voltage reference provides an accurate reference to analog blocks, ADC and DAC, and replaces external voltage references to reduce system cost
Performance
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ARM® Cortex-M4™ core with DSP, 100MHz clock, single cycle MAC, and single instruction multiple data (SIMD) extensions
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16-channel DMA for peripheral and memory servicing with reduced CPU loading and faster system throughput
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Cross bar switch enables concurrent multi-master bus accesses, increasing bus bandwidth
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Independent flash banks allow concurrent code execution and firmware updating with no performance degradation or complex coding routines
Timing and Control
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Up to three FlexTimers with a total of 12 channels. Hardware dead-time insertion and quadrature decoding for motor control
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Carrier modulator timer for infrared waveform generation in remote control applications
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Four-channel 32-bit periodic interrupt timer provides time base for RTOS task scheduler or trigger source for ADC conversion and programmable delay block
Human-Machine Interface