MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -In Sleep (Power-down) mode, a PIC microcontroller is placed in it’s lowest current consumption state. The device goes into Sleep mode by executing a SLEEP instruction. The device oscillator is turned off, so no system clocks are occurring in the device.

Detailed explanation-2: -The power down modes in PIC family of MCU’s typically comprises of Doze, Idle, Sleep and Deep sleep modes. The PIC18 Q10 family of MCU’s have three power down modes and they are Doze, Idle and Sleep mode.

Detailed explanation-3: -When the PIC microcontroller is in normal mode it will start blinking the LED and by giving external interrupt it will go into sleep mode and the LED will stop blinking. When the PIC microcontroller is in sleep mode, after providing external interrupt it will wake up and start blinking the LED again.

Detailed explanation-4: -Sleep Modes. The sleep modes (generally referred to as low power modes) are arguably the most popular technique for reducing the power consumption in microcontrollers. They generally involve disabling certain circuitry or clocks that drive certain peripherals of the microcontrollers.

Detailed explanation-5: -When the device enters sleep mode, program execution is stopped and interrupts or a reset is used to wake the device again. The application code decides which sleep mode to enter and when. Interrupts from enabled peripherals and all enabled reset sources can restore the microcontroller from sleep to active mode.