Contents
- 1 What are different registers of PIC18?
- 2 How many WREG registers are in PIC18?
- 3 Which set of registers is related to ports of PIC18?
- 4 What are the general purpose registers of PIC16F877A?
- 5 What does W register mean?
- 6 What is the function of WREG register?
- 7 What are the ports registers of PIC16F877a?
- 8 Where are the registers in a PIC microcontroller?
- 9 What are the control registers for the ADC module?
- 10 What are two types of interrupts in pic18f4550?
What are different registers of PIC18?
The PIC18 MCU has a 21-bit program counter that is divided into three registers: PCU, PCH, and PCL.
How many WREG registers are in PIC18?
The 8 bit WREG register is the most widely used register in the PIC micro-controllers. WREG stands for working register, as there is only one. The WREG register is the same as the accumulator in other microprocessors. The WREG register is used for all arithmetic and logic instructions.
What is file register in PIC18?
A register is a place inside the PIC that can be written to, read from or both. Think of a register as a piece of paper where you can look at and write information on. The figure below shows the register file map inside the PIC16F84.
PORT C and the TRIS C Registers PORT C is an 8-bit wide, bidirectional PORT which controlled and maintained by TRIS C data direction register. Setting a TRIS C bit (= 1) will make the corresponding PORT C pin an input (i.e., put the corresponding output driver in a High-Impedance mode).
What are the general purpose registers of PIC16F877A?
The General Purpose Register (GPR) memory map (PIC16F877A) is shown in the figure below. The special function registers are also memory registers which is used for special dedicated functions. These registers are used by the CPU and peripheral modules for controlling the desired operation of the device.
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. NOTE: PCON register is not bit addressable.
What does W register mean?
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 function of WREG register?
The 8-bit WREG register is the most widely used register in the PIC micro controller. WREG stands for working register, as there is only one. The WREG register is the same as the accumulator in other microprocessors. The WREG register is used for all arithmetic and logic instructions.
What is the function of RAM file register?
The file register is read/write memory used by the CPU for data storage, scratch pad, and registers for internal use and functions. As with WREG, we can perform arithmetic and logic operations on many locations of the file register data RAM.
What are the ports registers of PIC16F877a?
Ports in PIC16F877a:
- PortA has 8 Pins in total and it is an analogue Port.
- All Pins in PortA are analogue.
- PortB also has 8 Pins but these all are digital Pins.
- PortC is also a digital Port having 8 Pins.
- PortC Pins are also used for Serial Communication.
- PortD has 8 Pins and all are digital Pins.
- PortE has 3 Pins.
Where are the registers in a PIC microcontroller?
The figure below shows the register file map inside the PIC16F84. Don’t worry if you haven’t come across anything like this before, it is only to show where the different bits and pieces are inside the PIC, and will help explain a few of the commands. First thing you will notice is that it is split into two – Bank 0 and Bank 1.
What do you mean by Register in Pic?
A register is a place inside the PIC that can be written to, read from or both. Think of a register as a piece of paper where you can look at and write information on. The figure below shows the register file map inside the PIC16F84.
What are the control registers for the ADC module?
There are three control registers for the ADC module and two result registers. This register uses to select input channels and control conversion process ADCON0 needs to be configured for enabling the ADC peripheral (ADON bit) GO bit in the register starts the conversion of the input analog signal when set.
What are two types of interrupts in pic18f4550?
Interrupts in PIC18F4550 There are 2 types of interrupts based on origin Software Interrupt: It comes from a program that is executed by a microcontroller or by internal peripherals of the microcontroller. Hardware Interrupt: These interrupt requests are sent by external hardware devices connected to certain pins of the microcontroller.
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