MK22DX256VLH5 Freescale Semiconductor, MK22DX256VLH5 Datasheet - Page 38

• Manufacturer Part Number: MK22DX256VLH5
• Description: ARM Microcontrollers - MCU ARM+256Kb +USB
• Manufacturer: Freescale Semiconductor

Specifications of MK22DX256VLH5

• Rohs: yes
• Core: ARM Cortex M4
• Processor Series: MK22DX256
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT

Security and Integrity
4.5.3.2 External Bus Interface (FlexBus)
4.5.3.3 Serial Programming Interface (EzPort)
4.5.3.4 NAND Flash Controller
4.5.4
4.5.4.1 Cyclic Redundancy Check (CRC)
4.5.4.2 Hardware Cryptographic Acceleration Unit (CAU)
38
• Security circuitry to prevent unauthorized access to RAM and flash contents
• Six independent, user-programmable chip-select signals that can interface with external SRAM, PROM, EPROM,
• Supports up to 2 GB addressable space
• 8-, 16- and 32-bit port sizes with configuration for multiplexed or non-multiplexed address and data buses
• Byte-, word-, longword-, and 16-byte line-sized transfers
• Programmable address-setup time with respect to the assertion of chip select
• Programmable address-hold time with respect to the negation of chip select and transfer direction
• Same serial interface as, and subset of, the command set used by industry-standard SPI flash memories
• Ability to read, erase, and program flash memory
• Reset command to boot the system after flash programming
• 8- and 16-bit NAND flash interface
• 9 KB RAM buffer
• Supports flash device commands
• Integrated DMA engine
• Two configurable DMA channels
• Optional ECC mode supports 4/6/8/12/16/24/32-bit error correction
• Hardware CRC generator circuit using 16/32-bit shift register
• User Configurable 16/32 bit CRC
• Programmable Generator Polynomial
• Error detection for all single, double, odd, and most multi-bit errors
• Programmable initial seed value
• High-speed CRC calculation
• Optional feature to transpose input data and CRC result via transpose register, required on applications where bytes are
• Supports DES, 3DES, AES, MD5, SHA-1, and SHA-256 algorithms
• Simple C calls to optimized security functions provided by Freescale
EEPROM, flash, and other peripherals
in lsb format
• Flexmemory block contains up to 512KB FlexNVM and 16KB FlexRAM with up to 16KB EEPROM capability
• Up to 128KB SRAM
• 16KB cache
Security and Integrity
K20 Family Product Brief, Rev. 11, 08/2012
Freescale Semiconductor, Inc.