STM32 - based on ARM Core Cortex-M3
For High Integration, Low Power, Real Time Performance and Low Cost -
Now with 512K Flash and other more features!

Other power-saving features include an integrated Real Time Clock (RTC) with dedicated pin for battery operation and a dedicated 32kHz oscillator, and four low power modes.

In performance terms, the STM32 family offers up to 30% faster processing than an equivalent ARM7TDMI-based product. Or, for the same processing power, STM32 devices require 75% less power.


These improvements are facilitated by the many new architectural enhancements provided by the Cortex-M3 Core. A tightly-coupled Nested Vectored Interrupt Controller (NVIC) provides significantly faster interrupt response (down to six CPU cycles inter-interrupt latency). The provision of atomic bit manipulation allows individual bits to be modified in a single write operation. Execution is further accelerated by the use of branch speculation, and the provision of single-cycle multiply and hardware divide functions.

The STM32 family also allows designers to reduce code size by up to 45%, via the use of the Thumb 2 instruction set.

Both types of device are offered in QFN36, LQFP48, LQFP64, LQFP100 and BGA100 packages in addition with the 512KByte Flash version BGA and LQFP-144 are also available.

ST has added 28 new devices to the STM32 family, including devices in 36-pin packages at the low end and 144-pin packages at the high end. Compatibility of pin-assignments, peripherals and software across all STM32 devices remains a core technical feature throughout this extended family of microcontrollers. The latest MCUs provide 256 Kbytes, 384 Kbytes or 512 Kbytes of embedded Flash for code and data storage, enabling developers to implement new features and enhance the capabilities of existing product platforms. Embedded SRAM has also been increased, to 64 Kbyte for the 72MHz Performance Line variants, and 48 Kbytes for the 36MHz Access Line devices. The Access Line is engineered to encourage entry to 32-bit design for cost-constrained applications, or 16-bit designs.

Extra peripherals embedded in MCUs with 256 Kbytes and larger Flash memories include a Flexible Static-Memory Controller (FSMC) supporting NOR and NAND Flash, SRAM, and CompactFlash memories. The FSMC also supports Intel 8080 and Motorola 6800 modes for parallel interface with LCD controllers. These MCUs also feature a host interface for removable media including SD (Secure Digital), SDIO (Secure Digital Input/Output) and MMC (Multi-Media Card), meeting MultiMediaCard System Specification 4.42 for 8-bit data transfer at 48MHz.

In addition, an I2S port supporting master and slave modes and audio-sampling frequencies from 8 kHz to 48 kHz has been added, as well as a 2-channel 12-bit DAC and an Embedded Trace Macrocell (ETM) to enhanced debug capabilities. Additional standard peripherals are included with a combination of up to five UARTs/USARTs and three SPI and two I2C bus interfaces. This new combination of peripherals allows the STM32 family to address new markets that require superior connectivity and additional control.

In all, the STM32 product range now comprises 46 different Performance Line and Access Line devices. The STM32 environment allows developers to build applications on a standard core, drawing on a large ecosystem of software and tools. Support for developers includes a new ST evaluation board for the latest models introduced, software and firmware libraries, and a wide variety of compatible third-party tools.


STM32F10x Portfolio