Kinetis® K28-150 MHz, 2x USB, Core Voltage Bypass, 2MB Flash, 1MB SRAM MCUs based on Arm® Cortex®-M4

K28_150

The Kinetis K28 USB Arm® Cortex®-M4 MCUs target applications requiring processing efficiency and extra-large embedded memory with 2 MB Flash and 1 MB SRAM. This microcontroller sub-family is:

  • Highly integrated with two I2S interfaces, two USB Controllers (High-Speed with integrated High-Speed PHY and Full-Speed) and mainstream analog peripherals
  • Expandable through a 32-bit SDRAM memory controller and QuadSPI interface supporting eXecution-In-Place (XiP)
  • Enabling secure content using a True Random Number Generator, Cyclic Redundancy Check, Memory Mapped Cryptographic Acceleration Unit

3 Input supply voltage rails: (1.2V, 1.8V and 3V) + separate VBAT domain

K28 implements a Power Management Controller supporting Core Voltage Bypass and can be powered by an external PMIC to maximize the power efficiency of the overall system

Packages: 169 MAPBGA (9x9mm2, 0.65mm pitch) and 210 WLCSP (6.9x6.9mm2, 0.4 mm pitch)

Evaluation / Development platform: FRDM-K28F

Block Diagram

Kinetis K27/K28 USB MCUs Block Diagram

Kinetis K27/K28 USB MCUs Block Diagram
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Features

Performance

  • 150 MHz (max) Cortex-M4 with DSP instructions and Single Precision Floating Point unit (FPU)
  • 32-channel DMA with asynchronous support in Stop mode
  • Crossbar switch enables concurrent multi-leader bus accesses, increasing bus bandwidth

Ultra-Low-Power

  • Active run power core consumption @120Mhz: <258 µA/MH (TYP) (@25C) running from internal flash
  • Static power consumption down to <14µA with full 1MB SRAM retention and <6 µS wakeup
  • Lowest static mode down to 254 nA (VLLS0)

Memory

  • 2 MB dual bank embedded program flash
  • 1 MB of SRAM
  • 8 KB I/D Cache + 8 KB System Cache
  • 32-bit SDRAM controller
  • QuadSPI interface with eXecution-In-Place (XiP)

Mixed-Signal Capability

  • 16-bit SAR ADC: Up to 18ch Single-Ended / 3ch Differential
  • 12-bit DAC
  • Two analog comparators (CMP) containing a 6-bit DAC and programmable reference input
  • 1.2V Analog voltage reference

Timing and Control

  • One 4 ch-Periodic interrupt timer
  • Two 16-bit low-power timer PWM modules
  • Two 8-ch motor control/general purpose/PWM timers
  • Two 2-ch quadrature decoder/general purpose timers
  • Real-time clock with independent 3.6 V power domain
  • Programmable delay block

Human-Machine Interface (HMI)

  • 32-ch Programmable module (FlexIO) to emulate various serial, parallel or custom interfaces

Connectivity and Communications

  • Dual USB Controllers: High-Speed (HS) w/ integrated HS PHY + crystal-less Full-Speed (FS) operations
  • Five Low Power UART (LPUART) modules
  • Two I2S modules for audio system interfacing and four I2C modules
  • Four SPI modules (One supports up to 40 Mbps)
  • 32-ch Programmable module (FlexIO) to emulate various serial, parallel or custom interfaces
  • Secure Digital Host Controller (SDHC)

Reliability, Safety and Security

  • Cyclic redundancy check (CRC) engine validates memory contents and communication data, increasing system reliability
  • True random number generator (TRNG)
  • Memory Mapped Crypto Acceleration Unit (MMCAU): 256-bit DES, AES, SHA accelerator

Comparison Table

Kinetis MCU sub-family Part # Mask Set Flash SRAM PMC w/ Core Voltage BypassPackages Development board
K28 MK28FN2M0ACAU15R 3N96T
(recommended)		 2 MB 1 MB Yes210 WLCSPFRDM-K28F
MK28FN2M0AVMI15 169 MAPBGA
MK28FN2M0CAU15R 2N96T 210 WLCSP
MK28FN2M0VMI15 169 MAPBGA
K27 MK27FN2M0AVMI15 3N96T
(recommended)		 No 169 MABPGA
MK27FN2M0VMI15 2N96T

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