IAR Systems asserts that its complete C/C++ compiler and debugger toolchain supports more microcontrollers in more architectures than any other tool on the market. All available ARM cores from all major vendors, in total more than 4,000 devices, are supported by IAR Embedded Workbench, and IAR Systems continually adds support for new devices.
The Apollo family of microcontrollers from Ambiq Micro, which architecturally are ARM devices, offers leading power numbers in both active modes and sleep modes. These power savings combined with a high-performance processing engine make the Apollo MCUs a good choice for battery-powered devices including wearable electronics, activity and fitness monitors, and wireless sensors.
IAR Embedded Workbench for ARM; including trial versions; www.iar.com/iar-embedded-workbench/arm/