32-bit MCUs
Kinetis K50 Family
Integrated measurement engine, Ethernet and LCD
Target Applications
• Low-power portable medical devices
• Clinical and lab equipment
• Test/measurement equipment
• Instrumentation applications
• Monitor and telehealth applications
Overview
The Kinetis MCU portfolio consists of multiple pin-, peripheral and software-compatible MCU families
based on the ARM
®
Cortex™-M4 core. Kinetis MCU families are built from innovative 90 nm thin-film
storage (TFS) flash technology with unique FlexMemory (EEPROM) capability and offer industry-
leading low power and mixed signal analog integration.
The K50 MCU family provides designers with an analog measurement engine consisting of
integrated operational and transimpedance amplifiers as well as high-resolution ADC and DAC
modules. The family also features IEEE
®
1588 Ethernet and hardware encryption, Full-Speed
USB 2.0 On-The-Go with device charger detect capability and a flexible low-power segment LCD
controller with support for up to 320 segments. Devices start from 128 KB of flash in 64 QFN
packages extending up to 512 KB in a 144 MAPBGA package.
Kinetis K50 Family
Kinetis K50 Family
Core
ARM
®
Cortex™-M4
72/100 MHz
Debug
Interfaces
Interrupt
Controller
DSP
System
Internal and
External
Watchdogs
Memory
Protection Unit
(MPU)
DMA
Low-Leakage
Wake-Up Unit
Program
Flash
(128 to 512 KB)
FlexMemory
(32 to 256 KB)
(2 to 4 KB EE)
Serial
Programming
Interface
(EZPort)
Memories
SRAM
(32 to 128 KB)
External
Bus Interface
(FlexBus)
Clocks
Phase-Locked
Loop
Frequency-
Locked Loop
Low/High-
Frequency
Oscillators
Internal
Reference
Clocks
Security
and Integrity
Cyclic
Redundancy
Check (CRC)
Random
Number
Generator
Cryptographic
Acceleration
Unit (CAU)
Analog
16-bit
ADC
PGA
Analog
Comparator
6-bit
DAC
12-bit
DAC
Voltage
Reference
OPAMP
TRIAMP
Timers
FlexTimer
Carrier
Modulator
Transmitter
Programmable
Delay Block
Periodic
Interrupt
Timer
Low-Power
Timer
Independent
Real-Time
Clock (IRTC)
IEEE
®
1588
Timer
Communication Interfaces
I
2
C
I
2
S
Secure
Digital Host
Controller
(SDHC)
USB OTG
(LS/FS)
USB Charger
Detect (DCD)
IEEE 1588
Ethernet MAC
USB Voltage
Regulator
HMI
GPIO
Xtrinsic
Low-Power
Touch-Sensing
Interface
Segment
LCD Controller
UART
(ISO 7816)
SPI
Standard
Optional
One-Stop Enablement
Offering: MCU + IDE + RTOS
Freescale Tower System hardware
development environment:
• TWR-K53N512-KIT ($179)
Includes TWR-SER, TWR-ELEV and
TWR-K53N512 modules
• TWR-K53N512 ($109)
Includes TWR-K53N512 and
TWRPI-SLCD daughter card
• Integrated development environments
Eclipse-based CodeWarrior IDE
and Processor Expert
IAR Embedded Workbench
Keil MDK
CodeSourcery Sourcery G++ (GNU)
• Portable medical applications demo
software: EKG, pulse oximeter, blood
pressure monitor, spirometer
• Math, DSP and encryption libraries
• Motor control libraries
• Complimentary bootloaders (USB, Ethernet,
RF, serial)
• Complimentary Freescale embedded GUI
• Complimentary Freescale MQX™ RTOS
• Cost-effective Nano™ SSL/Nano™ SSH for
Freescale MQX RTOS
• Micrium uC/OS-III
• Express Logic ThreadX
• SEGGER embOS
• FreeRTOS
• Green Hills µ-velOSity
• Mocana (security)
• Full ARM ecosystem
• Reduces core interruption, increasing
performance
• Design flexibility and system cost reduction
• Increases system safety by restricting
access to key memory locations
• Provides scalability needed for key digital
power and motor control applications
Features
• ARM
®
Cortex™-M4 core with DSP
instruction support
• Up to 16-channel DMA and
crossbar switch
Up to 2 x 16-bit ADC with PGA
Up to 2 x 12-bit DAC
Programmable delay block
Operational and
transimpedance amplifiers
• Voltage reference (VREF)
• EEE
®
1588 Ethernet MAC with
I
hardware time stamping
• Hardware encryption coprocessor
• USB On-The-Go (Full-Speed) with
device charger detect
•
•
•
•
Benefits
• Up to 100 MHz core supporting a broad range of processing bandwidth needs
• Peripheral and memory servicing with reduced CPU loading. Concurrent multi-master
bus accesses for increased bus bandwidth
• High-resolution and high-accuracy ADC provides accurate signal acquisition
• Digital-to-analog converter with clock gating optimized for low-power usage
• PDB precisely triggers ADC and DAC blocks to complete sensor biasing and
measurement (i.e. glucometry strips)
• OPAMPS allow signal filtering and amplification, TRIAMPS are optimized for
converting current inputs into voltages that can be read by the ADC
• VREF allows enhanced accuracy by supplying analog peripherals with fixed reference
• Precision clock synchronization for real-time networked industrial automation
and control
• Secure data transfer and storage. Faster than software implementations and with
minimal CPU loading. Supports a wide variety of algorithms
• Optimized charging current/time for portable USB devices enabling longer battery life
USB low-voltage regulator supplies up to 120 mA off chip at 3.3 V to power external
components from 5 V input
• LCD blink mode enables low average power while remaining in low-power mode
• Segment fail detect guards against erroneous readouts and reduces LCD test costs
• Frontplane/backplane reassignment provides pin-out flexibility easing PCB design
and allows LCD configuration changes via firmware with no hardware re-work
• Supports multiple 3 V and 5 V LCD panel sizes with fewer segments (pins) than
competitive controllers and no external components
• Unused LCD pins can be configured as other GPIO functions
• Enables the connection of external memories and peripherals (e.g., graphics displays)
• Connection to SD, SDIO, MMC or CE-ATA cards for in-application software
upgrades, file systems or adding Wi-Fi
®
or Bluetooth
®
support
• High reliability, fast access program memory with 4-level security protection
• Independent flash banks allow concurrent code execution and firmware updating
• FlexMemory provides 2–4 KB of user-segmentable byte write/erase EEPROM
In addition, Flex NVM from 32–256 KB for extra program code, data or
EEPROM backup
• Flexible, low-power LCD controller
with support for up to 320 segments
(40 x 8 or 44 x 4)
• FlexBus external bus interface and
secure digital host controller
• 128–512 KB flash.
Up to 128 KB of SRAM
• 32–256 KB FlexMemory
K50 Family Options
Memory
FlexMemory(KB)
Feature Options
64 LQFP
(10 x 10 mm) LH
Packages
144 BGA
(13 x 13 mm) MD
√
√
√
√
√
√
80 LQFP
(12 x 12 mm) LK
DAC
MK50DX128Cyy7
MK51DX128Cyy7
MK50DX256Cyy7
MK51DX256Cyy7
MK51DN256ZCyy10
MK50DX256ZCyy10
MK51DX256ZCyy10
MK53DX256ZCyy10
MK50DN512ZCyy10
MK51DN512ZCyy10
MK52DN512ZCyy10
MK53DN512ZCyy10
yy = Package designator
72
72
72
72
100
100
100
100
100
100
100
100
128
128
256
256
256
256
256
256
512
512
512
512
32
32
32
32
-
256
256
256
-
-
-
-
32
32
64
64
64
64
64
128
128
128
128
128
2
2
2
2
4
4
4
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LCD
Part Number
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For current information about Kinetis products and documentation,
please visit
freescale.com/Kinetis
Freescale, the Freescale logo, CodeWarrior and the Energy Efficient Solutions logo and Processor Expert are trademarks of
Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Xtrinsic is a trademark of Freescale Semiconductor, Inc. All other product
or service names are the property of their respective owners. ARM is the registered trademark of ARM Limited. ARM Cortex-M4 is
the trademark of ARM Limited. © 2011, 2012 Freescale Semiconductor, Inc.
KNTSK50FMLYFS REV 4
144 LQFP
(20 x 20 mm) LQ
CPU (MHz)
100 LQFP
(14 x 14 mm) LL
EEPROM/
FlexRAM (KB)
121 BGA
(8 x 8 mm) MC
SRAM(KB)
Flash (KB)
Ethernet
TRIAMP
Opamp
stm32/stm8
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