What is file register in PIC?
A register is a place inside the PIC which used to read or write the data/program. The memory of the PIC is divided into a series of registers. Each of the registers has its own address and memory locations. These addresses are normally denoted by using hexadecimal numbers.
What is file register in PIC18?
The file register of the PIC18 family can have a maximum of 4096 (4K) bytes. With 4096 bytes, the file register has addresses of 000-FFFH. The file register in the PIC18 is divided into 256 byte banks. We can have up to a maximum of 16 banks (16 X 256 = 4096).
How many registers are there in PIC?
Let us take a closer look at these three registers. To change from Bank 0 to Bank 1 we tell the STATUS register. We do this by setting bit 5 of the STATUS register to 1. To switch back to Bank 0, we set bit 5 of the STATUS register to 0.
What is file select register?
File Select RegistersThe File Select Registers (FSR) are 16-bit registers used as memory pointers for indirectaddressing of data memory. Indirect addressing (see in later work) allows the user to access alocation in data memory without giving a fixed address in the instruction.
What does a register file do?
A register file is a means of memory storage within a computer’s central processing unit (CPU). The computer’s register files contain bits of data and mapping locations. These locations specify certain addresses that are input components of a register file.
What is GPR and SFR?
Data memory is made up of the Special Function Registers (SFR) area, and the General Pur- pose Registers (GPR) area. The SFRs control the operation of the device, while GPRs are the general area for data storage and scratch pad operations. The data memory is banked for both the GPR and SFR areas.
What is W register?
The W register is a special register in the PIC architecture, that is used as one of the 2 operands for ALU operations, and can also be the destination for any ALU operation. In PIC18 devices, the W register is also mapped in RAM and can be accessed through the WREG special function register.
What is the use of Pcon register?
The PCON or Power Control register, as the name suggests is used to control the 8051 Microcontroller’s Power Modes and is located at 87H of the SFR Memory Space. Using two bits in the PCON Register, the microcontroller can be set to Idle Mode and Power Down Mode.
How many banks are available in PIC 18f452?
6 banks
2.1. The memory in general consists of 16 banks, each of 256 bytes. PIC18F452 has 1536 bytes of data memory (6 banks × 256 bytes each) occupying the lower end of the data memory.
Is bank a PIC microcontroller?
As some of you have noticed, the internal RAM in the PIC 16F appears to be arranged in “banks”. Each bank holds 128 RAM registers total. The first 128 RAM locations are in bank 0, the next 128 RAM locations are in bank 1, so on and so forth.
What is the use of file select register in PIC microcontroller?
PIC Hardware File register 00 (INDF) is used for indirect file register addressing. The address of the register required is placed in the file select register (FSR). When data is written to or read from INDF, it is actually written to or read from the file register pointed to by FSR.
What is the difference between a register and a register file?
Registers are temporary storage locations inside the CPU that hold data and addresses. The register file is the component that contains all the general purpose registers of the microprocessor. A few CPUs also place special registers such as the PC and the status register in the register file.
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