Arm provides software developers working with Holtek devices based on the Arm Cortex-M0+ processor with a
free-to-use professional tool suite.
The free Keil MDK Holtek Edition – Cortex-M0+
edition includes the Arm C/C++ Compiler, the
Keil RTX5 real-time operating system kernel, and the
µVision IDE and debugger. Download MDK Core
If you wish to program also Holtek's Arm Cortex-M3 based devices, purchase the
Keil MDK Holtek Edition – Cortex-M0+/M3/M4 online.