Iar Embedded Workbench For Stmicroelectronics Stm8 1.40.1 =link= Jun 2026

#include <iostm8l152c6.h>

: For new projects, buy the latest IAR EWSTM8 (v3.1+). For legacy maintenance, isolate 1.40.1 on a Windows 10 VM. Iar Embedded Workbench For Stmicroelectronics Stm8 1.40.1

Note: Version 1.40.1 does include support for the newer STM32 family (ARM Cortex-M). #include &lt;iostm8l152c6

| Feature | IAR EWSTM8 1.40.1 | Cosmic STM8 (free 16KB) | SDCC (open source) | |---------|--------------------|--------------------------|---------------------| | | ★★★★★ | ★★★★☆ | ★★☆☆☆ | | IDE integration | Full C-SPY | Eclipse plugin | Command line + VSCode | | Simulator | Cycle-accurate | None | Partial | | RTOS support | FreeRTOS, AtomThreads | Only generic | FreeRTOS | | Price | $3,000/year (now) | $1,500 (perpetual) | $0 | | Customer support | Direct email/phone | Forum only | Community | | Feature | IAR EWSTM8 1

The primary advantage of IAR EWSTM8 over free alternatives (like SDCC) is code density.

| Benchmark | IAR 1.40.1 (size) | SDCC (size) | IAR speed (cycles) | |--------------------|-------------------|-------------|--------------------| | Dhrystone 2.1 | 1,824 bytes | 2,468 bytes | 1,420 | | CoreMark (iter) | 2,106 bytes | 2,990 bytes | 8,120 | | FIR filter (16-bit)| 890 bytes | 1,230 bytes | 3,400 |