- Microcontroller Selection Considerations
There are several things to consider in deciding which type will be used in our design is as follows:
- The availability and price of a development tools (Programmer, Emulator and Simulator)
- Availability of documentation (Ref. Manual, Application notes and other books).
- Availability of place to ask.
- Availability of components OTP, Mask, and Programmable
- Matters Concerning Microcontroller
- Fabrication Techniques
CMOS - Complementary Metal Oxide SemiconductorCMOS - Architecture
Von-Neuman Architecture
Von-Neuman Architecture - Harvard Architecture
Harvard Architecture - Instruction
RISC&CISC
CISC
Today almost all microcontroller is CISC microcontrollers (CompleteInstruction Set Computer). Usually have more than 80 instructions.The advantage of this is their CISC instruction that works like a macro sebua, allowing programmers to use a single instruction replaces several other sedarhana instructions.
RISC
Currently the industry trend to use RISC microprocessor design (Reduced Instruction Set Computer). By using fewer number of instructions, allowing land on chip (silicon real-estate) is used to enhance the ability of the chip. Advantages of RIS is simplicity of design, smaller chips, a little pin count and very little power consumption.
Below is fature commonly owned by RISC Processor:
Harvard Architecture, which allows access to programs and data simultaneously. Instruction Pipelining increase execution speed.
Orthogonal instruktion set to ease in programming, allowing each instruction to be operated at the register or used in some addressing mode, these instructions do not have a particular combination and also without exception
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