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Introduction to pic microcontroller
- 1. Introduction to PIC Microcontroller T.Ramprakash AP/ECE RamcoInstitute of Technology Academic Year 2016-17 (Odd Sem)
- 2. Why PIC hasbecome popular ??? • Low cost • Wide availability • Large user base • Easy of availability of its supporting hardware and software tools like assemblers, debuggers and simulators • Re-programming with flash memory capability • Easy to interface with other peripherals
- 3. PIC - Introduction •Peripheral Interface Controller • Harvard architecture • RISC Architecture • Low end Architecture and Mid-range Architecture • line packages and surface mount packages • Speed (20 Mhz) • Watch dog timer • Brown-out protection
- 4. PIC - Introduction •Power on Reset • ROM/OTP/EPROM/ROM/Flash • 8 level stack • Powerful output pin control • Up to 12 independent interrupt sources • Direct and Indirect addressing modes • Timers • Serial Programming
- 6. PIC 16C6x Architecture •High performance RISC CPU • 8 bit microcontroller • Low cost, High performance, CMOS, fully static microcontroller • Only 35 single word instructions • Interrupt capability • Eight level deep hardware stack • Direct and Indirect addressing modes • Power-on Reset (POR) • Power-up Timer (PWRT) • Oscillator Start-up Timer (OST)
- 7. PIC 16C6x Architecture •Watchdog Timer (WDT) • Programmable code-protection • Power saving SLEEP mode • Selectable oscillator options • Low-power, high-speed CMOS EPROM/ROM technology • Fully static design • Wide operating voltage range: 2.5V to 6.0V • Commercial, Industrial, and Extended temperature ranges • Low-power consumption
- 8. PIC 16C6x PeripheralFeatures • Three timers: Timer0, Timer1, Timer2 – Timer0 : 8-bit timer/counter with 8-bit prescaler – Timer1 : 16-bit timer/counter with prescaler, can be incremented during sleep via external crystal/clock – Timer2 : 8-bit timer/counter with 8-bit period register, prescaler and postscaler • Capture/Compare/PWM (CCP) module(s) – Capture is 16-bit, max resolution is 12.5 ns – Compare is 16-bit, max resolution is 200 ns – PWM max resolution is 10-bit
- 9. PIC 16C6x PeripheralFeatures • Synchronous Serial Port (SSP) with SPI and I2C • Universal Synchronous Asynchronous Receiver Transmitter (USART/SCI) • Parallel Slave Port (PSP) 8-bits wide, with external RD, WR and CS controls • Brown-out detection circuitry for Brown-out Reset (BOR) • The figure shows the block diagram of PIC 16C62A
- 12. PIC Working Registers •W - Reg • Status Register • FSR – File Select Register • INDF • Program Counter • PCL • PCLATCH • Eight Level Stack
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- 15. Reference • Peatman,J.B., “Designwith PIC Micro Controllers”PearsonEducation,3rdEdition, 2004 • Furber,S., “ARM System on Chip Architecture” Addison Wesley trade Computer Publication, 2000