NXP 恩智浦Kinetis KL28: 72- 96MHz Cortex-M0+ up to 512KB Flash
Kinetis KL28Zxxx with 512 KB Flash and 128 KB
SRAM Kinetis KL28Zxxx with 512 KB Flash and 128 KB SRAM 72 MHz Cortex-M0+ based Microcontroller Supports ultra low power Arm based microcontroller