PARIS STMicroelectronics NV (Geneva, Switzerland) has added 28 devices to its family of 32-bit Flash microcontrollers based on ARM's Cortex-M3 core to provide up to 512 Kbytes of Flash, larger SRAM and additional peripherals for displays, sound, storage and advanced control.
ST entered the fast-growing, high volume 32-bit MCU fray in June 2007 with the STM32 MCU family. It was then offered in two separate lines, the 'Performance' line to sport clock frequencies of up to 72 MHz and the 'Access' line with clock frequencies of up to 36 MHz.
The global 32-bit MCU market is expected to grow at a compound annual growth rate (CAGR) of 24.5 percent on a unit basis through 2011, according to Semico Research. The CAGR in sales is set to reach 17.8 percent for the same period.
Currently, the 32-bit MCU market is dominated by proprietary 32-bit microcontroller suppliers such as Renesas, with a 27.7-percent market share, NEC, with a 22.9-percent market share, and Freescale, with a 17.3-percent market share.
In an interview with EE Times Europe, Stephanie Ordan, product marketing manager for the STM32, declared: "Today, we have a very big revenue growth in our STM32 family. Full production started in October 2007, and we are seeing a fast ramp up of design. Our ambition is really to become the leader in 32-bit MCUs. We believe that the combination of a standard architecture, best-in class peripherals, low power mode and full offering is making the difference."
With the new family members, Ordan said ST offers two axes of design flexibility with the addition of feature peripherals 1µs triple 12-bit ADC, 4.5Mbit/s USART, 18Mbit/s SPI, SDIO, I2S, DAC, FSMC and memory extensions. The latest MCUs provide 256 Kbytes, 384 Kbytes or 512 Kbytes of embedded Flash for code and data storage. ST also increased embedded SRAM, to 64 Kbytes for the 72 MHz performance line variants and to 48 Kbytes for the 36 MHz access line devices.