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Devt kits for ST's 32bit MCUs

Posted: 19 Aug 2005 ?? ?Print Version ?Bookmark and Share

Keywords:stmicroelectronics? st? development kit? str711f? str712f?

STMicroelectronics announced new development kits for its STR711F and STR712F 32bit arm-based microcontrollers (mcus), which are intended for high-performance but cost-sensitive applications, and which offer embedded USB or CAN interfaces.

With a recommended resale price of $299, the kits from IAR Systems answer the market need for a low-cost, high-quality solution for evaluating the STR7 MCU family and for creating and debugging new applications.

Both the STR711-SK/IAR and STR712-SK/IAR KickStart kits support all of the normal development phases, and enable designers to move from evaluation to full-scale development with no additional work. They include an evaluation board complete with STR711F or STR712F MCU, a USB to JTAG hardware interface for debugging, a 20-state version of the visualSTATE graphical design environment, and a KickStart version of Embedded Workbench for ARM (EWARM), IAR's integrated development environment (IDE).

The evaluation board provides a full range of features, including I/O ports, ADC, UART, two SPI and I?C ports, and USB or CAN connector, to help designers to evaluate and start developing applications for the on-board STR71xF MCU. The board is powered through the USB to JTAG interface from the host PC to eliminate the need for an external power supply.

The EWARM integrated development environment includes the KickStart 32KB C/C++ compiler for building the application, and the C-SPY debugger for debugging the code while it runs on the evaluation board's STR71xF MCU. It also offers complete integration with the J-Link-KS JTAG interface, plus editor, linker and librarian tools, and built-in flash programming, all controlled through a single intuitive user interface. Embedded Workbench is well regarded among developers of 8, 16 and 32-bit systems worldwide, and its ultra-dense code generation makes it suitable for the STR71xF target market.

Debugging of software on the target MCU is enabled by the J-Link-KS USB to JTAG interface, which allows the code to be downloaded to the MCU and debugged while it runs in the application hardware. The interface provides a 5V supply to the target board through the JTAG connector.

The kit is completed by a full set of documentation and firmware, with example projects covering all of the STR711F and STR712F peripherals, STR71xF standard and USB libraries, and a Quick Start guide.

STR711F and STR712F MCUs

Based on the industry standard ARM7TDMI 32-bit RISC CPU, the STR711F and STR712F MCUs are designed for embedded systems requiring a compact but powerful MCU, and for scalable solutions such as user interfaces, factory automation systems and point-of-sale (POS) applications. They offer best-in-class random access time to Flash memory, making them ideal for real time applications, said ST. Both USB (STR711) and CAN (STR712) interfaces are available on-chip, in addition to other common interface standards.

Memory choices include 256KB of code flash with 64KB of RAM, 128KB of flash with 32KB of RAM, and 64KB of flash with 16KB of RAM. Both products include 16KB of data flash memory. Packaging options include the compact, low pin count TQFP64, and a 144-pin TQFP144 with external memory bus.

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