Embedded Systems Design Europe - June/July 2008 - (Page 37)

new products ST extends STM32 MCU family STMicroelectronics has increased both the scalability and peripheral options of its 32-bit STM32 MCU family. The STM32 MCU family was in troduced in June 2007 and is now being expanded the family to provide up to 512 kbytes of on-chip ﬂash, larger SRAM and extra features for displays, sound, storage and advanced control. The STM32 family is built on the 32-bit ARM Cortex-M3 CPU, and combines low power consumption with multiple power-saving modes for optimal performance in products such as industrial equipment, building-services controllers, medical devices and computer peripherals. 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 staticmemory controller (FSMC) supporting NOR and NAND ﬂash, SRAM, and Compact ﬂash 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 (MultimediaCard), meeting MultiMediaCard System Speciﬁcation 4.42 for 8-bit data transfer at 48MHz. In addition, an I2S port supporting master and slave modes and audiosampling frequencies from 8 kHz to troduced, thereby supporting extended platform scalability for developers seeking a cost-effective common-hardware strategy for multiple market opportunities. The Performance Line MCUs, with 256 kbytes to 512 kbytes of ﬂash, now include an extra PWM timer, offering two timers with seven outputs and dead-time control. These two PWM timers combine up to four standard 16-bit timers to allow support of up to twenty-eight PWM signals using the largest package. With an extra 12-bit ADC, these devices provide up to 21 channels of ADC with triple sample-and-hold capability. This gives the STM32 dual motorcontrol capabilities, to enable it to drive two 3phase brushless motors at the same time for airconditioning units and applications requiring four-wheel drive, for example. All Performance Line MCUs also include a USB port and CAN interface. 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. The latest STM32 MCUs in the QFN36 package are in volume production and devices with 256 kbytes and larger ﬂash memories are currently being sampled. www.st.com 37 48 kHz has been added, as well as a 2channel 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. The new STM32 devices are available in LQFP64, LQFP/BGA100 and LQFP144/BGA144 packages. For lower memory-density versions, featuring 32 kbytes or 64 kbytes of ﬂash, a new QFN36, the smallest 6 x 6mm package in the STM32 family, has also been in- www.embedded.com/europe | embedded systems design europe | JUNE – JULY 2008 http://www.st.com http://www.embedded.com/europe

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Embedded Systems Design Europe - June 2008 Contents Work in Progress to Define Compact PCI Plus Power.org Demonstrates New Tools Project Supports Multi-core System Programming Altium Links Electronic to Mechanical Design PLDs Look to Cut Power Budget and Costs Project to Provide Coverage Analysis Tool Microsoft Details Windows Embedded Update Cover Feature: Leveraging Virtual Hardware Platforms for Software Allocating Memory in MATLAB-to-C Code MDD & IDEs: Making the Twain Meet in Embedded System Designs Debugging Mixed Signal Designs for Infrequent & Random Events Why Open Source is the Natural Choice for High-security Systems Bringing the Benefits of Low Power CPUs to Modular Design New Products Advertising Contacts

Embedded Systems Design Europe - June/July 2008

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