MK21DX256AVMC5

NXP  MK21DX256AVMC5  微控制器, 32位, K2 USB系列, ARM 皮质-M4, 50 MHz, 256 KB, 64 KB, 121 引脚, MAPBGA

Overview

* Features hardware encryption and tamper detection

* Includes 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

* 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

### Low-Power

* 11 low-power modes with power and clock gating for optimal peripheral activity and recovery times. 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 4-level security protection

* Up to 64 KB FlexRAM

* FlexMemory

* Up to 4 KB of user-segmentable byte write/erase EEPROM for data tables/system data

* EEPROM with over 10M cycles and flash with 100 µsec write time brownouts without data loss or corruption

* No user or system intervention to complete programming and erase functions and full operation down to 1.71 volts

* In addition, FlexNVM from 64 KB for extra program code, data or EEPROM backup

### Performance

* 50 MHz ARM Cortex-M4 core with DSP instruction set, single cycle MAC and single instruction multiple data SIMD extensions.

* Up to 16-channel DMA for peripheral and memory servicing with reduced CPU loading and faster system through put 0 MHz core

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

### Timing and Control

* Up to two FlexTimers with a total of 10 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

### Connectivity and Communications

* Up to three UARTs. One UART supports RS232 with flow control, RS485, ISO7816 and IrDA. All other two UARTS support RS232 with flow control and RS485

* One inter-IC Sound I²S serial interface for audio system interfacing

* One DSPI and one I²C

### Reliability, Safety and Security

* Hardware Encryption coprocessor for secure data transfer and storage. Faster than software implementations and with minimal CPU loading. Supports a wide variety of algorithms - DES, 3DES, AES, MD5, SHA-1, SHA-256

* System security and tamper detect with secure real-time clock with independent battery supply. Secure key storage with internal/external tamper detect for unsecure flash, temperature, clock, and supply voltage variations and physical attack detection

* 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