How many pins are in PIC16F877A?

How many pins are in PIC16F877A?

PIC16F877A has 40 pins by 33 paths of I/O. The 40 pins make it easier to use the peripherals as the functions are spread out over the pins.

What is the size of the instruction in PIC16F877A?

The PIC16F877A features 256 bytes of EEPROM data memory, self programming, an ICD, 2 Comparators, 8 channels of 10-bit Analog-to-Digital (A/D) converter, 2 capture/compare/PWM functions, the synchronous serial port can be configured as either 3-wire Serial Peripheral Interface (SPI™) or the 2-wire Inter-Integrated …

How many IO ports are there in PIC16F877A?

5 Ports

How many addressing modes are there in PIC microcontroller?

1) Direct addressing like CLRF 13h. We deal with the address or the memory location. 2) Indirect addressing. we use in it INDF and FSR registers.

How many addressing modes are there in pic 18 controller?

Thus can specify 256 addresses (28bits =256 addresses). so as to access whole memory, data memory is divided into 16 banks, each having 256 registers. Bank selection is possible with help of BSR register i.e. Bank select register.

What are the different addressing modes?

In 8085 microprocessor there are 5 types of addressing modes:

• Immediate Addressing Mode – In immediate addressing mode the source operand is always data.
• Register Addressing Mode –
• Direct Addressing Mode –
• Register Indirect Addressing Mode –
• Implied/Implicit Addressing Mode –

What is the status of GO done bit of ADCON0 register at the end of conversion?

When the conversion ends, the result will be loaded into 2 registers ADRESH: ADRESL. Status bit GO/DONE (the register ADCON0) will be set to zero and the ADIF flag is set.

Which bit is used to start and stop ADC conversion?

The ADC Conversion Complete Interrupt is executed if the ADIE bit and the I-bit in SREG are set. ADIF is cleared by the hardware when executing the corresponding interrupt routine or by writing a logical ‘1’ to the flag. Setting this bit to a logical ‘1’ will enable the ADC interrupt.

Which bit is used to poll the end of ADC?

The ADSC bit will read as logic one as long as a conversion is in progress. When the conversion is complete, it returns to zero. The analogRead function polls this bit and returns the 10bit result in the ADCH:ADCL register pair when conversion is complete.

How many equal intervals are present in a 14 bit DAC?

How many equal intervals are present in a 14-bit D-A converter? Explanation: A 14-bit D-A converter has 2n-1 equal interval =214-1=16384-1=16383.

What is the size of ADC and DAC?

ADC has a resolution of one part in 4,096, where 212 = 4,096. Thus, a 12-bit ADC with a maximum input of 10 VDC can resolve the measurement into 10 VDC/4096 = 0.00244 VDC = 2.44 mV. Similarly, for the same 0 to 10 VDC range, a 16-bit ADC resolution is 10/216 = 10/65,536 = 0.153 mV.

What are the different types of DAC?

Types of DACs

• Weighted Resistor DAC.
• R-2R Ladder DAC.

What are the disadvantages of DAC?

The disadvantages of DAC are:

• Voltage levels must be exactly the same for all inputs in Weighted Resistors DAC.
• Binary weighted Resistor circuit that require Op-Amps are expensive.
• Power dissipation of Binary weighted Resistors Circuit is very high.

What are the basic DAC techniques?

Basic technique of DAC

• Basic technique of DAC. 6:52 mins.
• Weighted Resistor DAC. 12:29 mins.
• Resolution (DAC Specification-I) 12:57 mins.
• R-2R Ladder type DAC. 10:23 mins.
• Linearity, Monotonicity & Settling time (DAC Specifications-III) 9:59 mins.
• Introduction.
• Offset Error & Accuracy (DAC Specifications-II)
• Gate Question (2008)

Which of the following DAC is slowest?

Comparator – Counter type ADC is slowest.

How do you use a DAC?

Desktop and laptop computers: For most modern computers, you should use a USB DAC. Just connect a USB cable to an available port on your device. Then connect that cable to the corresponding input on your DAC. If you are using headphones, many USB DACs will have a headphone amp built in for your headphones.