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The PIC instruction set refers to the set of instructions that a Microchip Technology PIC or dsPIC microcontroller supports. The instructions are usually programmed into the Flash memory of the processor, and automatically executed by the microcontroller on startup. PICmicro chips have a Harvard architecture, and
PIC micro chips are designed with a Harvard architecture, and are offered in various device families. The baseline and mid-range families use 8-bit wide data memory, and the high-end families use 16-bit data memory. The latest series, PIC32MZ is a 32-bit MIPS-based microcontroller. Instruction words are in sizes of 12-bit
29.1. Introduction. Each midrange instruction is a 14-bit word divided into an OPCODE which specifies the instruc- tion type and one or more operands which further specify the operation of the instruction. The midrange Instruction Set Summary in Table 29-1 lists the instructions recognized by the MPASM assembler.
Instruction Set in PIC16Cxx MC Family. •. Complete set: 35 instructions. •. MC Architecture: RISC microcontroller. •. Instruction Types: 1. Data Processing Operations: – Copy data between registers. – Manipulate data in a single register. – Arithmetic operations. – Logic operations. 2. Program Sequence Control Operations:.
Architecture. The high performance of the PICmicro® microcontroller can be attributed to the following architectural features: Harvard Architecture; Instruction Pipelining; Large Register File; Single Cycle Instructions; Single Word Instructions; Long Word Instructions; Reduced Instruction Set; Orthogonal Instruction Set.
Complete set which includes 35 instructions is given in the following table. A reason for such a small number of instructions lies primarily in the fact that we are talking about a RISC microcontroller whose instructions are well optimized considering the speed of work, architectural simplicity and code compactness. The only
Popularity of PIC microcontrollers is due to the following factors-. 1. Speed: Harvard Architecture, RISC Architecture. 1 instruction Cycle = 4 clock cycles. For 20 MHz clock, most of the instructions are executed in 0.2µs or five instructions per mi- crosecond. 2. Instruction Set Simplicity: The instruction set consists of just 35
This chapter covers the commands which the microcontroller "understands". The instruction set for the 16FXX includes 35 instructions in total. Such a small number of instructions is specific to the RISC microcontroller because they are well-optimized from the aspect of operating speed, simplicity in architecture and code
Every instruction fits in a single 14-bit word. In addition, every instruction also executes in a single cycle, unless it changes the content of the Program Counter. These features are due to the fact that PIC micro controller has been designed on the principles of RISC (Reduced Instruction Set Computer) architecture. Instruction
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March 2018