![]() ![]() To get analog output we have to use external Digital-to-Analog Converter (DAC). ![]() There are no analog outputs in PIC Microcontroller. These timers work according to the selected modes. Timer0 and Timer2 are of 8-bits while the Timer1 and Timer3 are of 16-bits, which can also be used as a counter. ![]() ![]() PIC microcontroller can have up to four timers (depending upon the family) Timer0, Timer1, Timer2 and Timer3. Timers and counters are important as timers can tell the time and count. PWM Mode: This mode provides a 10 bit resolution pulse and duty cycle that is programmable.Compare Mode: It works same as an analog comparator, which means that when timer 1’s value reaches some reference value it will give an output signal.Capture Mode: In this mode time is captured when a signal is arrived, or we can say that, when the CCP pin goes high it captures the value of the Timer1.Port E:It is a 3-bit port which is used as the additional feature of the control signals to the A/D converter.Ī CCP module works in the following three modes:.Port D:This 8-bit port, unlike Port A, B and C is not an input/output port, but is used as acts as a slave port for the connection to the microprocessor When in I/O mode Port D all pins should have Schmitt Trigger buffers.Port C:It is also an 8-bit port and can be used as both input and output port which is determined by the status of the TRISC register.Moreover in input mode four of its bits are variable according to the interrupt signals. This port also can be used as input and output. The status of TRISA register decided whether it is used as input or output port. Port A:This port is 7-bit wide and can be used for both input and output.Let us take PIC16 series, it consists of five ports, such as Port A, Port B, Port C, Port D and Port E. There are 20 internal interrupts and three external interrupt sources in PIC microcontrollers which are related with different peripherals like ADC, USART, Timers, and CCP etc. PIC microcontroller support two wire Interface or I2C communication between two devices which can work as both Master and Slave device. I2C Protocol: I2C stands for Inter Integrated Circuit, and this protocol is used to connect low speed devices like microcontrollers, EEPROMS and A/D converters. SPI protocol has greater data handling capability than that of the USART. Three wire SPI communications is supported in PIC microcontroller between two devices on a common clock source. It is used to send data between PIC microcontrollers and other peripherals like sensors, shift registers and SD cards. SPI Protocol: SPI stands for Serial Peripheral Interface.To send and receive data serially the PIC microcontroller has two pins TXD and RXD. In this protocol data is transmitted and received bit by bit through a single wire according to the clock pulses. USART: It stands for Universal synchronous and Asynchronous Receiver and Transmitter which provides a serial communication in two devices.There are three protocols of serial communication: The transfer of one bit of data at time consecutively over a communication channel is called Serial Communication. There are six SFRs which are used to read and write to this memory (EECON1, EECON2, EEDATA, EEDATH, EEADR, EEADRH). It is indirectly addressed through the SFRs. This memory is not directly mapped in the register file. It is readable and writable during normal operation (over the full VDD range). This memory allows storing the variables as a result of burning the written program. It offers a lot of memory sizes and pin packages and different clock ratings. Second family: PIC12 (PIC12FXXX) called Mid-RangeĮach family has a variety of components along with built in special features.First family: PIC10 (10FXXX) called Low End.I recommend you to check a list of Pic microcontroller project here. In this PIC MICROCONTROLLER ARCHITECTURE article, I will explain step by step about PIC MICROCONTROLLER ARCHITECTURE and components used in pic microocntrollers. PIC Microcontrollers from Microchip Company are divided into 4 large families. Their interfacing with other peripherals is also very easy. PIC microcontrollers are of low cost, very fast and easy for the programming and execution of program. It was developed for supporting PDP computers to control its peripheral devices and that’s why it was named Peripheral Interface Controller. PIC microcontroller was developed by microchip technology in 1993. PIC MICROCONTROLLER ARCHITECTURE: PIC stands for Peripheral Interface Controller. ![]()
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