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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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C161PI Fiches technique(PDF) 19 Page - Infineon Technologies AG |
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C161PI Fiches technique(HTML) 19 Page - Infineon Technologies AG |
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19 / 82 page  &3, Data Sheet 17 1999-07 The CPU has a register context consisting of up to 16 wordwide GPRs at its disposal. These 16 GPRs are physically allocated within the on-chip RAM area. A Context Pointer (CP) register determines the base address of the active register bank to be accessed by the CPU at any time. The number of register banks is only restricted by the available internal RAM space. For easy parameter passing, a register bank may overlap others. A system stack of up to 1024 bytes is provided as a storage for temporary data. The system stack is allocated in the on-chip RAM area, and it is accessed by the CPU via the stack pointer (SP) register. Two separate SFRs, STKOV and STKUN, are implicitly compared against the stack pointer value upon each stack access for the detection of a stack overflow or underflow. The high performance offered by the hardware implementation of the CPU can efficiently be utilized by a programmer via the highly efficient C161PI instruction set which includes the following instruction classes: – Arithmetic Instructions – Logical Instructions – Boolean Bit Manipulation Instructions – Compare and Loop Control Instructions – Shift and Rotate Instructions – Prioritize Instruction – Data Movement Instructions – System Stack Instructions – Jump and Call Instructions – Return Instructions – System Control Instructions – Miscellaneous Instructions The basic instruction length is either 2 or 4 bytes. Possible operand types are bits, bytes and words. A variety of direct, indirect or immediate addressing modes are provided to specify the required operands. |
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