The hcAT91 CPU card is a member of the H-Storm system CPU card family. The H-Storm project is a modular system-level design approach targeting hobby electronics, robotics and fast prototyping. The project defines a standard 72-pin connector as the interconnect between the various elements of the system with two optional 20- pin extension connectors. The elements of an H-Storm system are CPU cards, peripherial cards and system- boards. The hcAT91 CPU card is a standard H-Storm system component and is built around the ATMEL AT91R40008 microcontroller. That device integrates a 66MHz ARM7TDMI processor core with 256kBytes of on-chip SRAM and a wide set of peripherials. The processor employs a 32-bit internal and a 16-bit external bus architecture. The CPU card combines this microcontroller with a 16-bit FLASH ROM of up to 8MByte in size, and some support circuitry. The low power microcontroller is run on 1.8V core and 3.3V I/O power supply voltages. The core power can be produced on-board by a small LDO regulator or provided externally. The processor module can be programmed in a variety of languages using the GNU toolchain, like C/C++ Pascal or ADA. There are also several other commercial development tools available from many vendors.
