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Developed by ARM in collaboration with Actel, the 32-bit ARM Cortex™-M1 processor is the first ARM processor designed for FPGA implementation. With a balance between size and speed, the free Cortex-M1 processor operates at up to 68 MHz and can be implemented in as few as 4,410 tiles.

A streamlined three-stage pipeline solution, the Cortex-M1 processor runs a subset of the classic Thumb®-2 instruction set so existing Thumb code can be utilized without change. The configurable Cortex-M1 processor connects to the Advanced High Performance Bus (AHB), enabling designers to build their subsystem and easily add peripheral functionality.

• Developed specifically for FPGA implementation
• ARMv6-M instruction set architecture
• Executes all Thumb code—can run ARM7 and ARM9 Thumb subroutines
• 3-stage, 32-bit pipeline
• Separate memory and AHB-Lite interfaces
• Configurable nested vectored interrupt controller
• Optional fast or small multiplier
• Upward compatible with Cortex-M3
• User-programmed into the FPGA
• All Cortex-M1 I/Os and signals are accessible to the user
• Optimized for Actel flash-based M1 devices
• Available with no license fees or royalties
• Embedded real-time debug and JTAG interface
• Supported by a full range of development tools

Cortex-M1 is available for use in M1 flash family devices, which have been made ARM-enabled for seamless use of the processor core.

There is an important set of functional blocks that’s required for Cortex-M1 embedded applications. Actel offer a number of free IP cores to support the Cortex-M1, for example common peripherals such as I2C and SPI. 

For a full list of available free IP Cores or more information on how to implement them in your design, please contact your local Avnet-Memec office for technical support.