M·CORE is a low-power, RISC-based microcontroller architecture developed by Motorola (now NXP (formerly Freescale)), intended for use in embedded systems. Introduced in late 1997, the architecture combines a 32-bit internal data path with 16-bit instructions, and includes a four-stage instruction pipeline. Initial implementations used a 0.36 micrometre process and ran at 50 MHz.
M·CORE processors employ a Princeton architecture with shared program and data bus—executing instructions from within data memory is possible. Motorola engineers designed M·CORE to have low power consumption and high code density.
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