Kinetis® K2x USB Microcontrollers (MCUs) based on ARM® Cortex®-M4 Core

The K2x ARM Cortex-M4 MCU family integrates cost effective Full and High-speed USB 2.0 On-The-Go (OTG) with device charge detect capability & crystal-less functionality.

Kinetis K2x USB MCUs
CPU Communications Security
Sub-families ARM
Cortex-M4
Memory USB
Controllers
I2S
CAN
RNG
Symmetric Crypto
Accelerator
Anti-tamper
K28
Dual-USBs,
Large memory &
PMC w/ Core
Voltage Bypass
150 MHz w/ FPU 2 MB Flash
1 MB SRAM
SDRAM Controller
QuadSPI XIP interface
2x
Full-Speed Crystal-less +
High-Speed w/ HS PHY
2
K27
Dual-USBs &
Large memory
150 MHz w/ FPU 2 MB Flash
1 MB SRAM
SDRAM Controller
QSPI interface
2x
Full-Speed Crystal-less +
High-Speed w/ HS PHY
2
K26
Dual-USBs &
Large Flash memory
180 MHz w/ FPU 2 MB Flash
256 KB SRAM
SDRAM Controller
2x
Full-Speed Crystal-less +
High-Speed w/ HS PHY
1 2
K24
Cost-effective & 256KB SRAM
120 MHz w/ FPU 256 KB - 1 MB Flash
256 KB SRAM
1x
Full-Speed
1 1* *
K22
Cost-effective
120 MHz w/ FPU 128 KB - 1 MB Flash
48 - 128 KB SRAM
1x
Full-Speed Crystal-less*
1 1* *
100 MHz w/ FPU 128 KB Flash
24 KB SRAM
1x
Full-Speed Crystal-less
1 1*
50 MHz 192 - 512 KB Flash
32 - 64 KB SRAM
1x
Full-Speed
1 1*
K21
Advanced Security
120 MHz w/ FPU 640 KB – 1 MB Flash
128 KB SRAM
1x
Full-Speed
1 1*
50 MHz 192 - 512 KB Flash
32 - 64 KB SRAM
1x
Full-Speed
1 1*
K20
High Mixed-signal
integration
120 MHz w/ FPU 512 KB – 1 MB Flash
128 KB SRAM
NAND Controller
2x
Full-Speed + High-Speed
2* 2*
100 MHz 256 - 512 KB Flash
32 - 128 KB SRAM
1x
Full-Speed
2* 2*
72 MHz 96 - 288 KB Flash
16 - 64 KB SRAM
1x
Full-Speed
2* 2*
50 MHz 32 - 160 KB Flash
8 - 16 KB SRAM
1x
Full-Speed
2* 2*

* : Feature only supported by a subset family

  • RNG: Random Number Generator
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