What is PIC18F45K22?
The PIC18F45K22-I/P is a 1536-byte SRAM low-power High-performance Microcontroller with XLP technology.
What are the core features of pic16c7x microcontroller?
Hardware features
- Flash memory (program memory, programmed using MPLAB devices)
- SRAM (data memory)
- EEPROM memory (programmable at run-time)
- Sleep mode (power savings)
- Watchdog timer.
- Various crystal or RC oscillator configurations, or an external clock.
What is F in PIC microcontroller?
In the instruction set tables that follow, register numbers are referred to as “f”, while constants are referred to as “k”. Bit numbers (0–7) are selected by “b”. The “d” bit selects the destination: 0 indicates W, while 1 indicates that the result is written back to source register f.
How many assembly instructions are supported in pic16f877a?
It has a smaller 35 instructions set.
What is Brown reset?
A brownout reset is a circuit that causes a computer processor to reset (or reboot) in the event of a brownout, which is a significant drop in the power supply output voltage.
What are the features of microcontroller?
A micro-controller is a single integrated circuit, commonly with the following features: central processing unit – ranging from small and simple 4-bit processors to complex 32-bit or 64-bit processors. volatile memory (RAM) for data storage. ROM, EPROM, EEPROM or Flash memory for program and operating parameter storage.
What are the features of PIC 18 microcontroller?
The basic features of PIC18F-series microcontrollers are:
- 77 instructions.
- PIC16 source code compatible.
- Program memory addressing up to 2Mbytes.
- Data memory addressing up to 4Kbytes.
- DC to 40MHz operation.
- 8 8 hardware multiplier.
- Interrupt priority levels.
- 16-bit-wide instructions, 8-bit-wide data path.
What is W register in PIC microcontroller?
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 are the features present 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 ports are in PIC16F877A?
5 Ports
IT has 5 Ports in total. ( PortA, PortB, PortC, PortD and PortE). It supports Serial Communication for which it has 2 Pins TX and RX.
What is BOR reset?
A Brown-out Reset (BOR) is a circuit that monitors the VDD level during operation by comparing it to a fixed threshold level. When VDD drops below the threshold level, the Brown-out Reset is activated. When VDD rises again, the controller is restarted after a specified delay (see Figure 1).
Why is it called brownout?
The term brownout comes from the dimming experienced by lighting when the voltage sags. A voltage reduction may be an effect of disruption of an electrical grid, or may occasionally be imposed in an effort to reduce load and prevent a power outageknown as a blackout.
Which of the following are the features of microcontroller Mcq?
Characteristics of 8051 Microcontroller
- An 8-bit processor.
- Data memory or RAM of 128 bytes.
- Program memory or ROM of 4 KB.
- 2 timers of 16 bit each.
- 8-bit data bus.
- 16-bit address bus.
- Offers a bit of addressable format.
- Special function registers and serial port.
What is microcontroller state any three advanced features?
Solution. (1) Microcontroller 8051 has 4k bytes of ROM, whereas 8052 has 8k bytes of onboard ROM or EPROM. (2) Microcontroller 8051 has 128 bytes of RAM, whereas 8052 has 256 bytes of onboard RAM. (3) Microcontroller 8051 has a dual 16-bit timer event counter whereas 8052 has an extra 16-bit timer event counter.
What for BCF is used in microcontroller?
BCF is a resetting command instruction used for performing reset operations for a specified bit or specified register (simply called bit clearing flag or bit clearing command). Normally BCF resets the specified bit in f registers content.
What is the function of W register?
How many registers does PIC have?
The vast majority of PIC registers are 8-bit registers. In the PIC there is only one data type: 8-bit as shown below. These range from the MSB (most significant bit) D7 to the LSB (least significant bit) D0. With an 8-bit data type, any data larger than 8 bits must be broken into 8-bit chunks before it is processed.