C166 family

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The C166 family is a 16-Bit microcontroller architecture from the semiconductor division of Siemens (which is nowadays operates under the name Infineon) in cooperation with ST Microelectronics from the year 1993. She is oriented on the well-etablied RISC concept, but features some microcontroller-specific extensions such as bitadressable memory and a low-latency optimized interrupt system. When this architecture has been introduced their main focus has been to replace the old 8051 controllers from Intel and to bring microcontrollers from 8 to 16 Bit.

Meanwhile the C166 is no longer produced, because it has been replaced by the C167 family and XC167 family.