The Option_Reg Register - Microchip PIC microcontroller. The Option_Reg Register. The Option_Reg register is a Readable and Writable register that is used to control some modules of the PIC. This register is only available from bank 1 and bank 3. The bits of the Option_Reg register as as follows: Bit #. 7.

2018-08-19

The size of the register is 8 bits. Click the link to explore the relevant bits of OPTION_REG Register Initializing the OPTION_REG register. The following is an example how we can initialize the OPTION_REG: All MCU mostly use weak pull up resistors. In order to activate this in our PIC MCU we have to look into our data sheet for the OPTION_REG (option register) as shown in the snapshot below. As shown the bit 7 deals with the weak pull up resistor. It should be made zero to activate it.

RBPU - PORTB Pull-up enable bit. For more information about the OPTION)REG registers, see the corresponding page ( The OPTION_REG Register). The first 4 ports of PORTB (RB0 through RB3) are set as Inputs and the other 4 (RB4 through RB7) are set as Outputs. Each of the PORTB pins has it's own pull-up resistor.

PIC16F877 Timer Modules tutorials Click the link to explore the relevant bits of OPTION_REG Register.

In Short. In order to use TMR0 properly, it is necessary: Step 1: To select mode: Timer mode is selected by the T0CS bit of the OPTION_REG register, (T0CS: 0=timer, 1=counter). When used, the prescaler should be assigned to the timer/counter by clearing the PSA bit of the OPTION_REG register.

It should be made zero to activate it. This is done by OPTION_REG<7>=0. The below table shows the registers associated with PIC16F877A Timer0 module. Timer Calculation To calculate the time the Oscillator frequency we need divided by 4 and then fed to the controller, and divide further by prescaler to generate the range of delays.

Default Value of OPTION_REG I am working through the Gooligum Tutorials. The one I am on right now is the Midrange PIC C Lesson 2: Using Timer). I have a question concerning the Page 3 of the PDF. ( I know it is kinda vague, but I will explain.) The tutorial mentions that OPTION = OPTION & 0b11111000 | 0b100.

Hello! Why this statement " OPTION_REG = 0xC5; " is ok when I am writing to OPTION_REG register, but when I am using the next statements I get an error ? " RBPU not a member of a struct/union ".

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TAKE A LOOK : PIC 16F877 – ARCHITECTURE AND MEMORY ORGANIZATION All MCU mostly use weak pull up resistors. In order to activate this in our PIC MCU we have to look into our data sheet for the OPTION_REG (option register) as shown in the snapshot below.

It is used in remote sensors, security and safety devices, home automation and many industrial instruments. An EEPROM is also featured in it which makes it possible to store some of the information permanently like transmitter codes and receiver frequencies and some other related data.
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The PIC16F877A has 8K (8096 x 14 bits) of Flash ROM program memory which can be programmed via the serial programming pins PGM, PGC, and PGD. The instruction for the program contains the operation code (opcode) and operand (immediate data, literals, register address, jump address).

bsf OPTION_REG, INTEDG. av P Bodegren · 2003 — The microcontroller is a PIC16F877A from Microchip. ett par register, att anpassa porten för anslutning till tryckknappar. OPTION_REG bcf. PIC Microcontroller-baserad robotarm: Från robotlinjen inom bilindustrin till Genom att använda OPTION_REG och TMR0-registret har vi ställt in Timer 0 med Till dessa har jag skapat 3st register som kallas Count_h (hundratal) This file is a basic code template for assembly code generation * ; on the PIC16F877A.

Timer mode is selected by clearing bit T0CS (OPTION_REG<5>). In Timer mode, the Timer0 module will increment every instruction cycle (without prescaler). If the TMR0 register is written, the increment is inhibited for the following two instruction cycles. The user can work around this by writing an adjusted value to the TMR0 register.

PIC16F877 Timer Modules tutorials - Timer0 Many times, We progressed with our project by displaying some text on 1602A LCD display using PIC16F877A and work with MPU6050 saved in the register.

So now, let’s see how these registers can be configured. CSRC: Clock Source Select bit. Asynchronous mode: Don’t care. TX9: 9-bit Transmit Enable bit 2006-05-26 Timer 1 has a register called TMR1 register, which is 16 bits of size. The below table shows the registers associated with PIC16f877A Timer 1 module.