MK20DX256VLK10R

ARM Cortex-M4 100MHz 闪存：256K@x8bit RAM：64KB

Overview

The Kinetis® K20 100 MHz MCU family offers a scalable portfolio with various levels of integration, featuring a rich suite of analog, communication, timing and control peripherals to accommodate a wide range of requirements.

* Maximizes board space and enhances performance with minimum-length interconnections

* Enables miniaturization of existing applications

* Provides performance efficiency with industry-leading low power

* Delivers significant BOM savings through smart on-chip integration

* Shares the comprehensive enablement and scalability of the Kinetis portfolio

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## Features

### Ultra-Low-Power

* 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 µA/MHz, with 4 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 eight internal modules and 16 pins as wake-up sources in low-leakage stop LLS/very low-leakage stop VLLS modes

* Low-power timer for continual system operation in reduced power state

### Flash, SRAM and FlexMemory

* 128 KB - 512 KB flash. Fast access, high reliability with four-level security protection

* 32 KB-128 KB of SRAM

* 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

### Mixed-Signal Capability

* Two high-speed 16-bit analog-to-digital converter ADC with configurable resolution. Single or differential output mode operation for improved noise rejection. 500 ns conversion time achievable with programmable delay block triggering

* Up two 12-bit digital-to-analog converter DAC for analog waveform generation for audio applications

* Three 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

### Performance

* ARM Cortex-M4 core with DSP, 100MHz clock, single cycle MAC, and single instruction multiple data SIMD extensions

* 16-channel DMA for peripheral and memory servicing with reduced CPU loading and faster system throughput

* Cross bar switch enables concurrent multi-master bus accesses, increasing bus bandwidth

* Independent flash banks allow concurrent code execution and firmware updating with no performance degradation or complex coding routines

### Timing and Control

* Up to three FlexTimers with a total of 12 channels. Hardware dead-time insertion and quadrature decoding for motor control

* Carrier modulator timer for infrared waveform generation in remote control applications

* 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

* Hardware touch-sensing interface with up to 16 inputs. Operates in all low power modes minimum current adder when enabled. Hardware implementation avoids software polling method. High sensitivity level allows use of overlay surfaces upto 5 mm thick

### Connectivity and Communications

* USB 2.0 On-The-Go full speed. 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 six UARTs with IrDA support including one UART with ISO7816 smart card support. Variety of data size, format and transmission/reception settings supported for multiple industrial communication protocols

* Inter-IC Sound I2S serial interface for audio system interfacing

* Two CAN modules for industrial network bridging

* Up to three DSPI and two I2C

### Reliability, Safety and Security

* Memory protection unit provides memory protection for all masters on the cross bar 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

* This product is included in ®.s product longevity program, with assured supply for a minimum of 10 years after launch

### External Peripheral Support

* FlexBus external bus interface provides interface options to memories and peripherals such as graphics displays. Supports up to 6 chip selects and 2GB addressable space

* Secure digital host controller supports SD, SDIO, MMC or CE-ATA cards for in-application software upgrades, or media files.

* Secure digital host controller supports SD, SDIO, MMC or CE-ATA cards for in-application software upgrades, or media files.