STMicroelectronics STM8S Microcontroller Family

The STM8S MCUs, from STMicroelectronics (NYSE: STM), combine the core’s high speed, performance and code efficiency with versatile peripherals, including a number of specific features for robustness and reliability. Integrated memory, including true EEPROM, simplifies emulation. The STM8S family lowers system cost and development time and increases performance in industrial and appliance applications. The STM8S 8-bit microcontrolle family is available in a wide range of package styles including 32-pin to 80-pin LQFPs, 20-pin to 48-pin QFNs and a 20-pin TSSOP. Prices begin at less than $1.00 in the LQFP32 package with 32 Kbytes of on-chip Flash, in quantities of 10,000 pieces.

The 8-bit STM8 core has a 32-bit memory interface and three-stage pipeline, achieving 20 MIPS peak processing performance at 24MHz. A stack pointer and 16-bit index registers enhance manipulation of tables, and the core’s 16 Mbytes of linear memory address space streamlines paging operations above 64Kbytes. In addition, improvements to stack-pointer operations, supplemental addressing modes and new instructions boost support for C programming and real-time performance to increase code density and processor efficiency.

Alongside the advantages of the STM8 core, the STM8S family includes large on-chip Flash memory with variants from 4 Kbytes to 128 Kbytes. The integrated EEPROM delivers performance comparable to external EEPROM, with real-time read-while-write capability and minimum 300,000 write-cycle durability.

In addition to specific features for reliability and robustness, such as dual independent watchdogs, a clock security system, complementary copy of configuration option bytes, and EMS reset, the STM8S family also includes in-application programming and in-circuit programming, as well as single-wire debug using the industry’s most advanced in-circuit-debugging module. In addition, four low-power modes help developers implement responsive power management schemes in applications such as home appliances and personal-care equipment, battery-operated devices, power tools, HVAC equipment, motor controllers and circuit breakers. The supply voltage range from 3.0V to 5.5V also simplifies development and eases upgrading of legacy designs.

More info: STMicroelectronics